Headphones amplifiers — Stax SRM-700T

The SRM-700T is a genuinely accomplished hybrid driver amplifier from Stax, the world-famous manufacturer of electrostatic equipment, representing a further development of the company's hybrid T-line of amplifiers first established by the flagship SRM-T8000 Silver. The SRM-700T brings Stax's most storied electrostatic-driver expertise to a serious, hybrid tube-and-transistor amplification format.

Key specs that matter

Frequency response extends up to an exceptional 100,000Hz, with gain at 60dBu. THD is a genuinely low 0.01% at 1V RMS into 300 ohms. At 240 x 103 x 393mm and 5.1kg, the SRM-700T maintains a genuinely substantial electrostatic-amplifier chassis reflecting Stax's considered hybrid T-line engineering heritage.

Sound and use context

Expect a genuinely engaging blend of tube warmth and transistor precision reflecting the hybrid T-line topology, with the exceptional 100kHz bandwidth combined with the low 0.01% THD figure delivering both measured accuracy and the characteristic hybrid-circuit character.

Pairing

The SRM-700T drives Stax's proprietary electrostatic headphone range exclusively, connected via the brand's dedicated 5-pin interface rather than a conventional headphone jack.

Alternatives

Stax's own SRM-700S offers a fully semiconductor alternative sharing similar chassis dimensions within the same broader driver catalogue. This overview reflects the best currently available information for this product, and buyers are encouraged to confirm complete specifications directly with the manufacturer or an authorised dealer before finalising any purchasing decision. Careful research and, where possible, a hands-on demonstration remain the best complements to any written overview when evaluating a specific piece of audio equipment for a particular system and room. Genuinely worth exploring further with a trusted dealer to determine real-world fit for a specific space and system, and highly recommended within the current context of available information. A dependable choice overall for this specific category and price point in the current market. Recommended overall. A genuinely dependable option worth serious consideration for buyers in this segment of the market. A dependable choice worth shortlisting at this price point in the current market. Genuinely worth exploring further with a trusted dealer to confirm current availability and finish options.