£24,750

The Electrostatic Headphone Amplifier

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.

*Stax Limited will not be liable for any damage to the headphones caused by the MSB Select Headphone Amplifier.

Integrated system.

The Select 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.

Anodized finishes.

Elegant yet commanding, our finishes are available in a matte silver or matte black anodize. Our products include our in-house designed viton feet, but any audiophile M6X1 foot can be installed to personalize your system.

Specifications

The Electrostatic Headphone Amplifier

The Select Headphone Amplifier can ONLY be used with MSB DACs.
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 OutputDirect connection to input when enabled or unit powered off. When listening to headphones, output is muted with 75Ω output impedance
Headphone Output1x Stax style output
Bias Voltage580Vdc, 5 MΩ
ControlsIR Remote (Configurable) Power Button (Configurable) 2x MSB 12V Trigger
Power Consumption80W Less than 2W standby
TopologyInput/Gain Stage - Class-A - Quad balanced - Impedance matched - Transformer coupled - Fully discrete
Output StageHigh Voltage Electrostatic Class-A - Balanced
Chassis DimensionsWidth: 17.5 in (444 mm) Depth: 17.5 in (444 mm) Height: 2.75 in (70 mm) Weight: 38 lbs (17 kg) Product Feet: M6X1 Thread
Shipping DimensionsWidth: 23 in (584 mm) Depth: 23 in (584 mm) Height: 7 in (178 mm) Weight: 45 lbs (20 kg)
Included AccessoriesUser manual Ground cable IEC power cord