Bellari HA540 MK2 Pure Class A Stereo Headphone Amplifier

The new 2019 HA540 MK2 no headphone amp has impressed us more than the Bellari HA540. It is a lush sounding 12AX7 tube headphone amp running 150 regulated volts to the tube plates. With plenty of gain that is uniquely capable of driving headphones rated from 8-2000 Ohms. Having two separate inputs, it’s brilliantly designed to work equally well with different source components. It will produce superb clarity when connected directly to a CD player, computer, phone or DAC. A zero-feedback design guarantees a smooth natural analog response. It will be the thing that kicks your music up a notch, and gets you addicted to this hobby. There is a definite weight to the audio quality, in the sense that everything felt like it had some genuine power driving it.

Technical Specifications

Input Impedance
47k ohms
Output Headphone impedance
8 Ohms to 2000 Ohms
Max Output Gain
19.6 dB
THD
.04% @ 20 Hz-20K Hz, at 1V RMS
S/N Ratio
>80 dB unweighted
Max Output Power
332 mW/side, 664 mW/Stereo ( @ 30 Ohms )
Frequency Response
6 Hz - 51 kHz +/- 3 dB
Phase Shift (In to Out)
0 db
Crosstalk
- 75