This is a beautiful looking Tube Class A Headphone Amplifier with acrylic plate installed in bottom and top.
It is Pure Class A amplifier with Audiophile Performance. It brings you a powerful, dynamic and sweet TUBE SOUND from your headphone. You will be astounded at the improvement in sound quality, dynamic range, meticulous transparency, completely demonstrate its high performance and analytical ability, it can also connect with power amplifier such as a high performance pre amplifier to improve your Hi Fi system.
There is NO OP amp or IC in this circuit, which introduce unexpected distortion to the sound.
In Put Power: DC24V
Input Sensitivity: 100mV
Input Impedance: 100KOhm
Out-Put Impedance: 20~600 Ohm
Frequency response: 10Hz-60KHz +/- 0.25dB
Signal/Noise Ratio: >90dB
Dynamic range: 84.6dBA(300 ohm) 89.8dBA(33 ohm)
THD: 0.016%(300 ohm) 0.45%(33 ohm)
IMD + Noise: 0.045(300 ohm) 0.42(33ohm)
Dimension:79 X 79 X 44mm (D * W *H) not measure to tube and transformer
Shipping Weight: 600 g
Bravo V1 Head-Amp * 1
Power cable with AC wall plug * 1
Brand new Electro-Harmonix 6922 tube * 1
6.3mm to 3.5mm Gold coat earphone Jack adapter * 1
Switching Power Supply Universal AC 100V-240V / 50~60Hz to 24V DC 1A out put * 1
(Auto-Detect International Compatible)
Q: This Amp only has only 1 Tube, how can I amplifier stereo signal?
A: There are 2 triode in this Tube (6922), It's just like dual core CPU in your PC. So both channels were get amplifiered by the Tube.
Q:what is the difference btween 6N11 Tube and 6922 Tube?
A: 6N11 is old tube made in China. It was EOL in mid 90s last century. So it's all old stock, even 2nd hand tube, the quality was no controllable. EH6922 is made in Russia, it's till on production nowadays. EH6922 has much better quality and stability in all aspect.