Sell ✑✇AIYIMA T8 Tube 6N3 Preamplifier Bluetooth 5.0 APTX OPA1656 Stereo Audio Preamp Headphone Preamp DA best price

Parameters: PC-USB supports sampling rate: 92K/24Bit Distortion: RCA: 0.2%/HP: 0.003% Bluetooth version: 5.0, QCC3031 support Qualcomm aptX and aptX HD Vacuum tube: 6N3, you can replace tube by GE5657,396A,2c51,12BA4,5670,6H3n PC-USB support operating system: XP/W7/W8/W10/MAC/linux SNR: RCA,108dB; HP, 106dB Headphone impedance matching: 16-300Ω Working voltage: DC12V Maximum output power: RCA: 1.9V/HP: 120mW@32Ω Size: L138*W123*H51mm Input sensitivity: 2V Net weight: 0.55kg Frequency response: 20Hz-20kHz (±0.5dB) Package size: L303*W230*H70mm OP amp chip OPA1656 instruction: • Ultra low noise: – Voltage noise: 2.9nV/√Hz at 10kHz – Current noise: 6fA/√Hz at 1kHz • Low distortion: – 0.000029% (–131dB) at 1kHz – 0.000035% (–129dB) at 20kHz • High open loop gain: 150dB • High output current: 100mA • Low input bias current: 10pA • Slew rate: 24V/μs • Gain bandwidth product: 53MHz • Rail-to-rail output • Quiescent current: 3.9mA per channel Headphone amplifier chip MAX9722 ◆THD+N is only 0.009% ◆High PSRR (80dB at 217Hz) without LDO ◆No need for large-size DC blocking capacitors ◆The output is ground-referenced, eliminating the DC bias voltage of the earphone ground pin ◆The output capacitor will not make the low frequency response worse ◆Differential input enhances noise suppression ◆Adjustable gain (MAX9722A) or fixed -2V/V gain (MAX9722B) ◆Each channel provides 130mW power for 32Q load ◆Integrated noise suppression circuit ◆Low quiescent current (5.5mA) ◆Short circuit protection and thermal overload protection ◆The amplifier output has ±8kV ESD protection (human body model) PC-USB decoder chip CM6642： The pc-usb decoder chip is a low-power single-chip USB 2.0 high-speed audio codec with built-in MCU, integrated PWM LED driver and 3-channel ADC/2-channel DAC and S/PDIF interface. Decoder chip ES9018K2M： It is a high-performance 24-bit 192KHZ, 2-channel audio D/a converter for audiophile-grade portable applications, such as mobile phones and digital music players. Operation Step: 1. Connect the audio source to the audio source input interface (when connecting to Bluetooth, the input channel must be switched to Bluetooth input) 2. Connect the external downstream equipment to the audio output interface (such as power amplifier, active speakers, etc.) 3. Connect the power supply (DC voltage must not be higher than 12V) 4. Press the encoder knob to turn on 5. Short press the knob to switch to the corresponding input channel to be used 6. Rotate the knob clockwise to select the desired volume