Boot operation instructions:
1. The tube takes 5-7 seconds to preheat.
2. The signal input program is manually self-tested, and the INPUT knob is rotated in the left and right direction. When any of the source signal lights is on, the program is normal and can be switched to the audio input position that you need.
Remarks:
The INPUT uses an infinitely variable potentiometer. The clock input selection sequence is Bluetooth→USB-PC→AUX, either clockwise or counterclockwise.
parameter
Audio input: USB-PC audio input *1 group
3.5 stereo input *1 group
Wireless Bluetooth input *1 group
Audio output: RCA output *1 group
Size: 16*11.5*7 CM
Power DC input: 12V voltage input (free distribution high quality power adapter, universal)
A2 packing list: host *1, power supply *1, electronic tube *2, Bluetooth antenna *1, USB cable *1, warranty card *1.
The tube adopts the classic 6N3
Bluetooth uses BTM303 Bluetooth audio 5.0 module, uses QCC3003 chip. Supports A2DP, AVRCP, HFP, AAC, I2S, etc., adopts 16M SPI FLASH memory chip, longer receiving distance, more stable, sound quality lossless decoding transmission
The Bluetooth decoding part uses the latest US ESS9023 top-level decoding core, and ES9023 is a 24-bit stereo audio digital-to-analog conversion chip from ESS.
The USB sound card part uses the famous American BB PCM2704 chip in the fever industry.