Stax SRM-700 Series

The SRM-700S uses an all-FET solid-state design for a clean, precise, and highly detailed sound. The SRM-700T is a hybrid model that pairs a FET input with a vacuum tube output, offering a slightly warmer, more organic tonal character.

Yes, both models feature the standard 580V PRO bias output, making them compatible with all current Stax electrostatic earspeakers.

Yes, both the 700S and 700T include both RCA (unbalanced) and XLR (balanced) inputs, allowing you to integrate them easily into a variety of high-end audio setups.

The SRM-700S offers a higher maximum output voltage of 450Vrms, while the SRM-700T provides 340Vrms. Both are more than capable of driving demanding Stax headphones to high volume levels with excellent headroom.

While the solid-state 700S reaches optimal performance quickly, the vacuum tube output stage in the 700T benefits from a brief warm-up period of 10 to 15 minutes to ensure the tubes reach their stable operating temperature.

With dimensions of 240mm wide and 393mm deep, they have a relatively compact footprint for high-performance gear. However, ensure you have adequate ventilation space around the unit, especially for the 700T, as vacuum tubes generate heat during operation.