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Stax SRM-X Pro

Earspeaker Drive Unit

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Stax SRM-X Pro


The SRM-X Pro is designed for directly driving electrostatic earspeakers of STAX's SR series bringing out the best sound quality of them.

Transformerless circuit between the amplifier section and earspeakers doesn't deteriotate the sound quality.

Simplified two stage configuration comprising of dual FET in the first stage and a high voltage MOS FET in the second stage achieves high quality and detailed reproduction with truly natural sound
DC circuit without output condenser unfavourable for sound quality.

Stereo mini jack on the front panel or RCA jack on the rear panel accepts direct connection with audio equipment such as pre-amplifier, cassette deck, CD player, VCR and so forth.

Outdoor use optional battery pack is available.


Frequency response: DC to 20kHz

Gain: 60dB

Harmonic distortion: 0.08%

Input level: 100mV

Dimensions: 130 x 37 x 134mm

Weight: 470g



This website is not affiliated with or sponsored by Stax. To purchase SRM-X Pro spares or accessories, please contact the company via their website or visit an authorised retailer.