The world’s highest level of headphone audio playback.

Electrostatic headphones.

With the great variety of headphone choices, it is only possible to achieve the best performance with a single headset in mind.  You can not use the universal headphone amp concept with the Select level of performance.  That is why we have built a dedicated Stax* headphone amp to be paired the the Select DAC.

Integrated system.

The Electrostatic Headphone Amplifier has been designed to take advantage of the powerful DAC outputs.  This allows it to achieve a level of headphone playback never heard.

Analog bypass.

If you are sharing the headphones with a two channel system, use an internal bypass in the amp.  Simply turn off the unit for the signal to be sent to your other system.

Equalization module.

A discrete passive equalization module slot is included with the amp.  This allows for slight analog adjustments of the amplifier to accommodate new headphone designs in the future.  This can also be used to tune the system for your preferences.

Dynamic Range>140 dB

Frequency Response5Hz-20Khz, ±0.8dB

XLR Input75Ω Balanced
4Vrms Maximum

Common Mode Rejection Ratio> 120dB CMRR @ 60Hz
> 90dB CMRR @ 1kHz
> 70dB CMRR @ 20kHz
Crosstalk<-90dB Crosstalk @ 1kHz
<-65dB Crosstalk @ 20kHz
XLR Output: Direct connection to input when enabled or unit powered off.
When listening to headphones, output is muted with 75Ω output impedance Headphone Output: 1x Stax style output

Bias Voltage580Vdc, 5 MΩ

ControlsIR Remote (Configurable)
Power Button (Configurable)
2x MSB 12V Trigger

Power Consumption80W
Less than 2W standby

Input/Gain Stage- Class-A
- Quad balanced
- Impedance matched
- Transformer coupled
- Fully discrete

Output Stage- High Voltage Electrostatic Class-A
- Balanced