STAX SRS-3100 Plus Electrostatic Earspeaker System

£895.00 inc. VAT

Trade-in available.

Consisting of 1 x SRM-252S Driver unit, 1 x SR-L300 Earspeakers, plus an iFi Audio iPower upgrade PSE, the SRS-3100 Plus electrostatic earspeaker system from STAX Audio provides excellent value for money.

Ideal for anyone looking for a high-quality, high-fidelity headphone system.

Bundle available while stocks last. Please contact us before purchase to be sure.


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SRS-3100 Plus System

The STAX SRS-3100 Plus electrostatic earspeaker system is an update to the original SRS-3100 system. This bundle continues to delivers a premium-quality, high-fidelity headphone system at an excellent price point.

The STAX SRS-3100 Plus system includes the SRM-252S Electrostatic Driver Unit, the SR-L300M Earspeakers, plus an iFi Audio iPower PSU upgrade.

STAX prefers to call its headphones EARSPEAKERS, because such ultra-high fidelity devices for reproducing music should only be compared with the best loudspeakers, not other headphones. The term EARSPEAKERS is therefore more descriptive of STAX’s contribution to today’s most advanced level of sonic transduction.

The electrostatic method has many quality advantage, but cannot be used directly with a conventional headphone jack, and thus requires an electrostatic driver (amplifier) unit. The vibrating diaphragm requires bias voltage of 580V (almost no current). Relatively high signal voltage to the fixed pole (up to 300-600V) must be supplied as push-pull, a rather special electrical signal. STAX Driver unit are series of dedicated amplifiers strictly for STAX headphones.

SRM-252S Driver Unit

Designed exclusively for driving STAX Audio Earspeakers which feature the PRO-bias 5-pin connectors, the SRM-252S from STAX Audio features a clear, simple design that excels in sound quality. The unit employs carefully-selected late-model high-voltage transistors and low-noise FETs to deliver excellent electrostatic reproduction of any audio signal.

See main product listing

SR-L300 Earspeakers

The first SR-Lambda series was introduced more than 36 years ago. Now further developed into a new-generation with a newly-designed enclosure, the SR-L300 is the new advanced Lambda series Earspeaker from STAX Audio.

See main product listing

iFi Audio iPower PSU

The PSU upgrade boasts improved components and a thicker gauge of wiring to deliver improved output/input noise suppression. And with Active Noise Cancellation II to cancel out all incoming EMI and RFI noise, you will never feel powerless against noise and graininess again. It is more than 20 times quieter than most audiophile power supplies.

See details of the iPower PSU

More Information

Additional information



Purchase Options

Click & Collect, Trade-In Available



Founded in 1938, STAX brought the world's first electrostatic headphone to market in 1960. Today they continue their long tradition by offering the finest audio products for both professional and audiophile applications.

All STAX headphones are referred to as "earspeakers" - the company states that such ultra-high fidelity devices can only be compared with the best cost-no-object loudspeakers, not other headphones. Their unique amplifiers, earspeakers and drivers are highly sought-after products, and extremely well considered by aficionados in the audio industry.

Unilet Sound & Vision are one of the oldest STAX dealers in the UK, and one of the very few official outlets stocking their products. Do get in touch with us if you would like to audition the range, or need advice or assistance with choosing the right system for your needs.

STAX | Unilet Sound & Vision


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