Walnut V2 / V2s  MP3 HiFi Music PlayerWalnut V2 / V2s  MP3 HiFi Music PlayerWalnut V2 / V2s  MP3 HiFi Music PlayerWalnut V2 / V2s  MP3 HiFi Music PlayerWalnut V2 / V2s  MP3 HiFi Music PlayerWalnut V2 / V2s  MP3 HiFi Music Player

Walnut V2 / V2s MP3 HiFi Music Player

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Product Description

Walnut V2 New DIY MP3 24Bit 192Kz 
Professional Lossless Music MP3 HiFi Music Player
Support 32GB TF Card Expansion and Support Headphone Amplifier
This is V2 Upgraded Version,
OP AMP:OPA2604, 
Remove Hold Buttom,
Add Data-Transfer Port.
Power: rotary potentiometer can be turned on. (Autoplay after power)
On one: the first button.
Play / Stop: middle button.
Next song: The last button.
All Key Lock: tail switch.
LED Status Description:
Turn on and off: being played.
Off: stop playing.
Tail charge indicator:
Red: charging.
Yellow: Charging complete. (Battery capacity 1500mha, charging time is about 2 hours)
Support 24bit 48khz wav file, the sound quality has reached the master level. Sound three-band equalizer, clear, structured. pcb layout neat and clean, analog to digital strict distinction. This is not to reduce low-noise and disturbance. More important is to reduce the storage capacitor and the electrical potential difference between the elements, while using a proprietary chip decoder chip mute processing technology, the use of separate left and right channels of DAC to deal with noise when the sound becomes mellow, sweet, natural permeability ( chip made confidential treatment). Under MP3 mode can not hear any background noise, with a charming mellow tone. At the same time with power and memory function, position the next boot automatically play when the last shutdown from start playing.
Simple firmware,only three buttons (on the song, play / pause, next track), only supports MP3 and wav format, we recommend using wav format does not support cue, almost abandoned all non-essential functions one only for the music fever, can not be connected to a computer with a memory card transfer songs, usb interface only used to upgrade the firmware and charge. tf card maximum can be extended 32G.
If To turn the amp mode:
boot automatically start playing music, then press the pause button, you can enter the amp mode, LO input port for the PO output, connected as shown (proposed to open the key lock to prevent misuse).
Upgraded Version V2S 
Please Note the order for V2S is Pre-order, Estimated Time of Arrival:May 8th, Please kindly extend the shipping time. Thanks.
1,Support FLAC,APE,MP3,WAV
2, Voice Prompts – facilitate the operation,   and No Screen,  but add a delete function
3,Support Playing Mode:Order, Shuffle, Repeat once 
4, Redesigned the power supply circuit, the op amp operating voltage from 15V to 16V sound more soft, the most important point is the basic elimination of the reaction of the noise problem. After a friend tested the impedance of 10 ohms, the sensitivity of 108db lm50 headphones did not find the presence of noise at first.
5,Upgrade a Nik on FW series of gold capacitors to make the sound more gentle
Components used materials superior. Drain Module Output Coupling and Capacitor Using Ina SILMICII Silk Fiber Violet Brown God Audio Electrolytic Capacitor (ie Silk Capacitor), ELNA Better Audio Capacitor. The input is the Ina Blue Robe. Are HiFi level audio capacitor, the amp power supply voltage to 16v, fever level opener rc5532 (replaceable op amp design), the use of potentiometer to adjust the volume, drive capacity 15-300 Europe, no longer mobile phone drive high The sharp harsh sound of the headphones.
 The color of the circuit board due to the production lot may change without notice.




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