Wooden box CD (Compact Disc) playing equipment with high tone quality

Abstract

The utility model discloses wooden case CD playing equipment with high tone quality, and the back of a cover body is hinged with a wooden case body, so that the cover body is opened or closed relative to the wooden case body; the sound cavity assembly comprises a loudspeaker, a vibrating diaphragm and a wooden box body, and the loudspeaker and the vibrating diaphragm are fixedly mounted on the surface of the wooden box body; the movement is placed on the plastic movement tray; the key-volume knob circuit board is fixedly arranged in the equipment, and the key-volume knob circuit board is used for controlling the volume of the equipment; the main control circuit board is fixed in the wooden box body through a first screw, and the main control circuit board, the movement and the key-volume knob circuit board are connected through a line to realize signal transmission and control; the singing arm assembly is provided with a singing arm knob and a singing arm encoder. The singing arm encoder is connected with the singing arm knob; the battery is installed in a battery installation position reserved in the equipment and supplies power to the equipment. According to the utility model, the problems of turbid tone quality, lack of details and poor sound field performance of a traditional CD player are solved.

Description

Technical Field

[0001] This utility model relates to a wooden box CD playback device with high sound quality, belonging to the field of CD player technology. Background Technology

[0002] CD players, as classic audio playback devices, possess unparalleled advantages in sound quality compared to digital music. They directly acquire analog signals stored on the CD disc through optical reading, providing a more natural and realistic music experience. As people's living standards improve, their demands for the sound quality of CD players are also increasing.

[0003] Traditional CD players have several structural design flaws that hinder further sound quality improvement. For example, the enclosures of CD players are typically made of plastic, whose density and fiber structure are unfavorable for sound wave propagation and reflection, easily generating resonance and noise, thus affecting the purity of the sound. The CD player mechanism generates mechanical vibrations during operation, which are transmitted through the device's structure to the audio amplification module, interfering with the audio signal and causing sound distortion. Furthermore, the acoustic cavity design of traditional CD players is often flawed, failing to precisely control the sound reflection path and easily creating standing waves, affecting the layering and stereo effect of the sound. Existing technologies have proposed some improvements. For instance, using a metal enclosure can improve stability and anti-interference capabilities, but metal enclosures are prone to resonance, negatively impacting sound quality. Adding damping pads between the mechanism and the audio amplification module can reduce vibration interference, but the effectiveness of these pads is limited and cannot completely eliminate the impact of vibration on sound quality. Utility Model Content

[0004] Therefore, this utility model provides a wooden box CD playback device with high sound quality, which solves the problems of muddy sound quality, lack of detail, and poor sound field performance caused by the large resonance, high sound transmission loss, and poor acoustic environment of traditional CD players.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wooden CD player with high sound quality, comprising a cover, a wooden box, a sound cavity assembly, a button-volume knob circuit board, a main control circuit board, a mechanism, a tonearm assembly, and a battery;

[0006] The back of the cover is hinged to the wooden box, allowing the cover to be opened or closed relative to the wooden box.

[0007] The acoustic cavity assembly includes a speaker, a diaphragm, and a wooden housing, with the speaker and diaphragm both fixedly mounted on the surface of the wooden housing; the mechanism is placed on a plastic mechanism tray.

[0008] The button-volume knob circuit board is fixedly installed inside the device, and the button-volume knob circuit board is used to control the device volume.

[0009] The main control circuit board is fixed inside the wooden box by the first screw. The main control circuit board, the mechanism, and the button-volume knob circuit board are connected by wires to realize signal transmission and control.

[0010] The tonearm assembly includes a tonearm knob and a tonearm encoder; the tonearm encoder and the tonearm knob are connected.

[0011] The battery is installed in a pre-reserved battery mounting position inside the device, and the battery supplies power to the device.

[0012] As a preferred embodiment of a high-quality wooden CD player, the back of the cover is connected to one end of a hinge via a hinge pin, and the other end of the hinge is fixed to the wooden box.

[0013] As a preferred embodiment of a high-quality wooden CD player, it also includes a plastic panel, which is installed on the upper port of the wooden cabinet; the plastic panel and the wooden cabinet are connected by screws and silicone plugs.

[0014] As a preferred solution for a high-quality wooden CD player, the button-volume knob circuit board is equipped with a touch button, and a plastic button is located above the touch button. The button-volume knob circuit board is also connected to a volume encoder and an infrared receiving diode, and a plastic volume knob is located above the volume encoder.

[0015] As a preferred solution for a wooden CD player with high sound quality, the mechanism is surrounded by shock-absorbing silicone, and a plastic mechanism tray supporting the mechanism is provided below the shock-absorbing silicone.

[0016] As a preferred solution for a high-quality wooden CD player, the wooden cabinet is made of solid wood or artificial board. The solid wood is selected from oak, walnut or cherry wood, and the artificial board is selected from medium fiberboard, particleboard, plywood or OSB. The wall thickness of the wooden cabinet (23) is 6cm, 9cm or 12cm.

[0017] As a preferred embodiment of a high-quality wooden CD player, it also includes a plastic interface, which is fixed to the rear of the wooden cabinet by a second screw. The plastic interface includes at least one of an audio output interface, a USB interface, and a power interface.

[0018] As a preferred embodiment of a high-quality wooden CD player, the speaker and the outer side of the diaphragm are sequentially covered with a dustproof cloth and a speaker mesh.

[0019] This utility model has the following advantages:

[0020] First, the hinged design of the lid and wooden box allows the lid to be easily opened or closed relative to the box, facilitating the placement and replacement of CDs and making operation simple and convenient. The clearly defined connection method ensures the stability of the overall structure, reducing malfunctions caused by loose parts or improper connections, and extending the equipment's lifespan.

[0021] Secondly, the speaker and diaphragm in the acoustic cavity assembly are fixed to the surface of the wooden cabinet, which provides a stable foundation for sound propagation. This structure, combined with a specific acoustic cavity design, facilitates effective sound propagation and reflection, reduces sound loss and distortion during propagation, improves audio clarity and layering, and brings users a better listening experience.

[0022] Third, the button-volume knob circuit board is fixed inside the device and has the function of controlling the device's volume. Its components, including tactile buttons, plastic buttons, a volume encoder, and an infrared receiving diode, work together. The tactile buttons and plastic buttons facilitate user operation, the volume encoder enables precise volume adjustment, and the infrared receiving diode supports remote operation via remote control, greatly improving the convenience and accuracy of user control of the device.

[0023] Fourth, the main control circuit board is fixed inside the wooden box with the first screw and is connected to the mechanism, button-volume knob circuit board, etc. via wiring. This connection method ensures stable and efficient signal transmission between components, enabling the device to accurately respond to various operation commands, operate stably, and realize functions such as play, pause, track switching, and volume adjustment, thereby improving the overall performance of the device and the user experience.

[0024] Fifth, the tonearm knob and tonearm encoder in the tonearm assembly are connected. The tonearm knob allows users to manually operate the tonearm, while the tonearm encoder can accurately detect the tonearm position and provide feedback signals. Working together, the two can achieve precise tonearm positioning, ensuring that the cartridge accurately reads the information on the CD, reducing skipping and reading errors, improving the accuracy and smoothness of music playback, and further optimizing sound quality. Attached Figure Description

[0025] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0027] Figure 1 This is a three-dimensional structural diagram of the high-quality wooden CD playback device provided in the embodiments of this utility model;

[0028] Figure 2 This is a three-dimensional schematic diagram from another perspective of the high-quality wooden CD playback device provided in this embodiment of the present invention.

[0029] Figure 3 This is a top view schematic diagram of a wooden CD playback device with high sound quality provided in an embodiment of this utility model;

[0030] Figure 4 This is a schematic diagram of the interior of a wooden CD player with high sound quality provided in an embodiment of this utility model;

[0031] Figure 5 This is an exploded view of the high-quality wooden CD playback device provided in this embodiment of the present invention.

[0032] In the diagram: 1. Cover; 2. Hinge; 3. Plastic panel; 4. Mechanism; 5. Plastic button; 6. Shock-absorbing silicone; 7. Plastic interface; 8. Hinge pin; 9. First screw; 10. Second screw; 11. Tonearm knob; 12. Main control circuit board; 13. Tonearm encoder; 14. Plastic volume knob; 15. Screw silicone plug; 16. Touch button; 17. Button-volume knob circuit board; 18. Volume encoder; 19. Diaphragm; 20. Infrared receiving diode; 21. Battery; 22. Speaker; 23. Wooden box; 24. Dustproof cloth; 25. Speaker grille. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a high-quality wooden CD player, including a cover, a wooden box, a sound cavity assembly, a button-volume knob circuit board, a main control circuit board, a mechanism, a tonearm assembly, and a battery.

[0035] The cover and the wooden box are hinged, allowing the cover to open or close relative to the box. This hinged connection allows the user to easily open and close the cover with minimal force, utilizing the hinge's rotational characteristics. This design not only facilitates the placement and removal of CDs but also ensures the cover fits snugly against the box when closed, providing some dust protection and safeguarding the internal components. Ideally, the cover 9 should be made of a transparent material, such as acrylic, to allow the user to observe the CD playback status inside the device.

[0036] The acoustic cavity assembly includes a speaker, a diaphragm, and a wooden enclosure. Both the speaker and diaphragm are fixedly mounted on the surface of the wooden enclosure. The speaker, as a key component for sound output, vibrates through electrical signals to produce sound. The diaphragm works in conjunction with the speaker to help it radiate sound better and enhance sound propagation. By fixing the speaker and diaphragm to the surface of the wooden enclosure, the enclosure acts as a resonator. The solid wood enclosure possesses excellent acoustic properties; its natural density and fiber structure effectively absorb and disperse sound waves, reducing resonance interference and providing a stable acoustic foundation for audio output. Simultaneously, the structure of the wooden enclosure reflects and refracts sound, creating a reasonable sound field distribution within a specific space, optimizing sound quality, and allowing users to hear a fuller, more immersive sound.

[0037] The mechanism is placed on a plastic mechanism tray. In one possible embodiment, the mechanism is surrounded by shock-absorbing silicone, and the plastic mechanism tray supports the mechanism below the silicone. The mechanism is the core component for reading CD information and will generate some vibration during operation. The plastic mechanism tray provides a stable support platform for the mechanism, ensuring its fixed position inside the device. The shock-absorbing silicone plays a crucial role in damping vibrations. During CD playback, the vibration of the mechanism may affect reading accuracy, leading to problems such as skipping or distortion. The elastic silicone can absorb the vibration energy generated by the mechanism, reducing the transmission of vibration to other components of the device, thereby ensuring the stability of the mechanism's operation, improving CD reading accuracy, and enhancing sound quality.

[0038] The button-volume knob circuit board is fixedly installed inside the device and is used to control the device's volume. In one possible embodiment, the button-volume knob circuit board has a tactile button, above which is a plastic button. The circuit board is also connected to a volume encoder and an infrared receiving diode. The plastic volume knob is located above the volume encoder. The combination of the tactile button and the plastic button provides the user interface. The tactile button is an electronically controlled trigger element. When the user presses the plastic button, pressure is transmitted to the tactile button, generating an electrical signal. These electrical signals are transmitted to the main control circuit board to control functions such as play, pause, and track switching. The volume encoder is a key component for precise volume adjustment. Rotating the plastic volume knob drives the volume encoder to rotate, and the encoder converts the rotation angle and other information into electrical signals. The main control circuit board adjusts the gain of the audio amplification module based on these signals, thereby achieving precise volume adjustment. The infrared receiving diode is used to receive signals emitted by the infrared remote control, allowing the user to operate the device from a certain distance, increasing ease of use.

[0039] The main control circuit board is fixed inside the wooden box with a first screw. The main control circuit board, the mechanism, and the button-volume knob circuit board are connected by wiring to achieve signal transmission and control. The main control circuit board's fixation inside the wooden box with the first screw ensures its positional stability. The wiring connection between the main control circuit board, the mechanism, and the button-volume knob circuit board enables bidirectional signal transmission. The mechanism transmits the CD audio signals, which the main control circuit board processes and converts before transmitting them to the audio amplification module for amplification and output. Simultaneously, the main control circuit board receives control signals from the button-volume knob circuit board and, based on user commands, controls the mechanism's operating state, such as play, pause, track search, and adjusts audio output volume and other parameters to ensure the device operates normally according to user needs.

[0040] The tonearm assembly includes a tonearm knob and a tonearm encoder; the tonearm encoder is connected to the tonearm knob. The tonearm knob is used by the user to manually operate the tonearm's position. When the user rotates the tonearm knob, the tonearm moves accordingly. The tonearm encoder monitors the tonearm's position changes in real time and converts the tonearm's position information into electrical signals. These electrical signals are transmitted to the main control circuit board, which precisely controls the tonearm's movement based on these signals, ensuring that the cartridge is accurately positioned at different tracks on the CD. The high-precision measurement function of the tonearm encoder makes the tonearm positioning more accurate, avoiding deviations when the cartridge reads CD information, thereby improving the accuracy of audio reading and ensuring the stability and purity of sound quality.

[0041] The battery is installed in a pre-designated battery mounting slot inside the device, and it supplies power to the device. The pre-designated battery mounting slot ensures the battery is securely fixed inside the device, preventing it from shaking or shifting during device movement. As a power source, the battery provides the necessary electrical energy to various components within the device. When the device is operating, the battery outputs DC power, which, after adjustment and distribution by the power management circuitry, provides stable voltage and current to components such as the main control circuit board and the button-volume knob circuit board. This power supply method eliminates the device's dependence on an external power outlet, enabling portable use and facilitating user operation in various scenarios.

[0042] In one possible embodiment, the back of the cover is connected to one end of a hinge via a hinge pin, and the other end of the hinge is fixed to the wooden box. Specifically, the combination of the hinge pin and the hinge is a common hinge implementation. The hinge pin connects the back of the cover to the hinge, allowing the cover to rotate around the hinge's axis. The other end of the hinge is fixed to the wooden box, providing a stable support point for the cover's rotation. This structure ensures that the cover remains stable during frequent opening and closing, preventing it from shaking or falling off, thus guaranteeing the reliability and durability of the equipment.

[0043] In one possible embodiment, a plastic panel is also included, which is mounted on the upper port of the wooden box; the plastic panel and the wooden box are connected by screws and silicone plugs.

[0044] Specifically, the plastic panel is installed at the top of the wooden casing, serving both protective and decorative purposes. It prevents dust and debris from entering the equipment, protecting the internal electronic components. Furthermore, the design of the plastic panel can be customized to meet different aesthetic preferences, enhancing the overall appearance of the equipment. Screws and silicone plugs connect the plastic panel and the wooden casing; the screws securely fix the two, ensuring a firm installation of the plastic panel. The silicone plugs provide a seal, preventing dust and moisture from entering the equipment through the screw holes, further protecting the internal components and extending the equipment's lifespan.

[0045] In one possible embodiment, the wooden box is made of solid wood or artificial board, wherein the solid wood is selected from oak, walnut or cherry, and the artificial board is selected from medium fiberboard, particleboard, plywood or OSB; the wall thickness of the wooden box (23) is 6cm, 9cm or 12cm.

[0046] Specifically, solid wood materials such as oak, walnut, and cherry possess unique acoustic properties. Their natural density and fiber structure effectively absorb and disperse sound waves, reducing resonance interference and providing a good acoustic environment for audio output. Alternatively, engineered wood panels can also be used. Appropriate wall thickness is also crucial for the acoustic performance of the wooden cabinet. A wall thickness of 6cm, 9cm, or 12cm ensures sufficient strength to prevent deformation while achieving a good balance between sound reflection and absorption. Too thin a wall thickness may lead to excessive resonance, affecting sound quality; conversely, too thick a wall thickness may make the sound too muffled, also hindering sound quality improvement.

[0047] In one possible embodiment, a plastic interface is also included, which is fixed to the rear of the wooden box by a second screw. The plastic interface includes at least one of an audio output interface, a USB interface, and a power interface.

[0048] Specifically, the plastic connector is secured to the rear of the wooden case with a second screw, ensuring stability and preventing loosening. The audio output interface is used to connect external audio devices, such as speakers or headphones, to output the audio signal for better playback. The USB interface can be used to connect external storage devices, such as USB flash drives, to play music files stored on the drive or for software upgrades. The power interface connects to an external power adapter to charge the device when the battery is low, ensuring continuous operation. These interfaces greatly expand the device's functionality and usage scenarios, meeting diverse user needs.

[0049] In one possible embodiment, the outer sides of the horn and the diaphragm are sequentially covered with a dustproof cloth and a horn mesh.

[0050] Specifically, the dust cover is located on the outermost side of the speaker and diaphragm, primarily serving a dust-proof function. It prevents fine particles such as dust and hair from entering the gap between the speaker and diaphragm, avoiding these impurities from affecting the normal vibration of the speaker and diaphragm, thus ensuring that sound quality is not affected. The speaker grille, building upon the dust cover, further protects the speaker and diaphragm. It not only prevents larger objects from directly contacting the speaker and diaphragm and causing damage, but also plays a role in sound diffusion and modification, allowing the sound to propagate more evenly and enhancing the user's listening experience.

[0051] The usage process of this utility model is as follows:

[0052] First, preparation: check the appearance of the equipment for any damage, and confirm that the battery is fully charged or connected to an external power source (if powered through a power interface).

[0053] Second, open the device: Open the cover relative to the wooden box using the hinged structure (the hinge and hinge pin engage), and insert the CD into the designated position inside the device. Close the cover; at this point, the cover fits tightly against the wooden box, serving to prevent dust and protect the internal components.

[0054] Third, operation control: Users can operate the device via a button-volume knob circuit board. Pressing the touch button (applying force through the upper plastic button) generates an electrical signal that is transmitted to the main control circuit board, executing commands such as play, pause, and track switching. Rotating the plastic volume knob rotates the volume encoder below, which converts the rotation information into an electrical signal and sends it to the main control circuit board. The main control circuit board adjusts the gain of the audio amplification module based on this signal, achieving precise volume control. Additionally, an infrared remote control can be used to send signals to the device. The infrared receiving diode receives the signal and transmits it to the main control circuit board to complete the corresponding operation, increasing operational convenience.

[0055] Fourth, reading disc information: After the user issues a playback command, the main control circuit board controls the mechanism to start working. The mechanism is placed on a plastic mechanism tray, and the surrounding shock-absorbing silicone reduces the impact of vibrations generated during operation on reading accuracy. The mechanism acquires audio information from the CD disc through optical reading and converts this information into electrical signals, which are then transmitted to the main control circuit board.

[0056] Fifth, signal processing and transmission: After receiving the audio electrical signal from the chassis, the main control circuit board processes and converts it, and then transmits the processed signal to the audio amplification module for amplification. At the same time, the main control circuit board also controls the working state of the chassis according to user operation commands (such as play, pause, track search, etc.).

[0057] Sixth, tonearm positioning: During playback, if a track needs to be changed, the user can rotate the tonearm knob on the tonearm assembly. The tonearm knob moves the tonearm, and the connected tonearm encoder monitors the tonearm position change in real time, converting the position information into an electrical signal and transmitting it to the main control circuit board. The main control circuit board precisely controls the tonearm movement based on this signal, ensuring the cartridge is accurately positioned to the target track on the CD, guaranteeing accurate audio reading.

[0058] Sound Output: The amplified audio signal is transmitted to the speaker in the acoustic chamber assembly. Driven by the electrical signal, the speaker vibrates, causing the diaphragm to work in tandem to produce sound. The wooden cabinet is made of solid wood (such as oak, walnut, or cherry), whose natural density and fiber structure effectively absorb and disperse sound waves, reducing resonance interference and providing a stable acoustic foundation for audio output. Simultaneously, the wooden cabinet reflects and refracts sound, optimizing sound quality. The dustproof cloth and speaker grille covering the outside of the speaker and diaphragm respectively prevent dust and other debris from entering and affecting sound production, while also providing some diffusion and modification of the sound, allowing users to hear a fuller, more three-dimensional sound.

[0059] Seventh, Device Connection and Expansion Functions (if needed): The device's plastic connector is located at the rear of the wooden case and is secured with a second screw. If the user wants to connect external audio devices (such as speakers or headphones), the audio cable can be plugged into the audio output interface (such as a 3.5mm headphone jack or RCA connector) for better audio playback. To play music files from an external storage device (such as a USB flash drive), the flash drive can be inserted into a USB interface (such as a USB Type-A or USB Type-C interface). When the battery is low, the device can be charged using the power adapter through the power interface to ensure continuous operation.

[0060] Eighth, turn off the device: After use, the user can issue a stop playback command through the button-volume knob circuit board, then open the cover, take out the CD, close the cover, and complete the usage process.

[0061] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be understood that, based on the technical concept of the present invention, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present invention, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the present invention.

Claims

1. A wooden-box CD playback device with high sound quality, characterized in that, Includes cover (1), wooden box (23), sound cavity assembly, button-volume knob circuit board (17), main control circuit board (12), mechanism (4), tonearm assembly and battery (21); The back of the cover (1) is hinged to the wooden box (23), so that the cover (1) can be opened or closed relative to the wooden box (23); The acoustic cavity assembly includes a speaker (22), a diaphragm (19), and a wooden housing (23). The speaker (22) and the diaphragm (19) are both fixedly mounted on the surface of the wooden housing (23). The mechanism (4) is placed on a plastic mechanism tray. The button-volume knob circuit board (17) is fixedly installed inside the device, and the button-volume knob circuit board (17) is used to control the device volume; The main control circuit board (12) is fixed inside the wooden box (23) by the first screw (9). The main control circuit board (12), the mechanism (4), and the button-volume knob circuit board (17) are connected by a line to realize signal transmission and control. The tonearm assembly includes a tonearm knob (11) and a tonearm encoder (13); the tonearm encoder (13) and the tonearm knob (11) are connected. The battery (21) is installed in a reserved battery mounting position inside the device, and the battery (21) supplies power to the device.

2. The high-fidelity wooden CD playback device according to claim 1, characterized in that, The back of the cover (1) is connected to one end of the hinge (2) via a hinge pin (8), and the other end of the hinge (2) is fixed to the wooden box (23).

3. The high-fidelity wooden CD playback device according to claim 1, characterized in that, It also includes a plastic panel (3), which is installed on the upper port of the wooden box (23); the plastic panel (3) and the wooden box (23) are connected by screws and silicone plugs (15).

4. The high-fidelity wooden CD playback device according to claim 1, characterized in that, The button-volume knob circuit board (17) is provided with a touch button (16), and a plastic button (5) is provided above the touch button (16). The button-volume knob circuit board (17) is also connected to a volume encoder (18) and an infrared receiving diode (20). A plastic volume knob (14) is provided above the volume encoder (18).

5. The high-fidelity wooden CD playback device according to claim 1, characterized in that, The movement (4) is surrounded by shock-absorbing silicone (6), and a plastic movement tray supporting the movement (4) is provided below the shock-absorbing silicone (6).

6. The high-fidelity wooden CD playback device according to claim 1, characterized in that, The wooden box (23) is made of solid wood or artificial board. The solid wood is selected from oak, walnut or cherry wood, and the artificial board is selected from medium fiberboard, particleboard, plywood or OSB. The wall thickness of the wooden box (23) is 6cm, 9cm or 12cm.

7. The high-fidelity wooden CD playback device according to claim 1, characterized in that, It also includes a plastic interface (7), which is fixed to the rear of the wooden box (23) by a second screw (10). The plastic interface (7) includes at least one of an audio output interface, a USB interface, and a power interface.

8. The high-fidelity wooden CD playback device according to claim 1, characterized in that, The outer sides of the speaker (22) and the diaphragm (19) are successively covered with a dustproof cloth (24) and a speaker mesh (25).

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