STAX SRM-700S Semiconductor Type High-End Electrostatic Driver

Released October 2020, the newly designed SRM-700S is an electrostatic headphone driver from STAX Audio, which utilises fully discrete dual FET circuitry.

The output of the J-FET and the large current emitter follower circuit are low noise, meaning that accurate music reproduction is delivered without missing any of the fine details. The amplification stage has a new semiconductor driver with J-FET, whilst the custom-made, dual FET is also incredibly low-noise.

Perfect for STAX electrostatic earspeakers, allowing the precise detail of your music to shine through.

Update, March 2022: The STAX SRM-700S is now also available in Black finish. We are awaiting images of this new casing.

Features

• Power transistor array features effective heat dissipation via large-sized heat sink
• High-definition film capacitors
• Hand-selected matching FET
• EMI shielded volume control
• Volume control bypass switching
• Switchable RCA and XLR inputs. RCA parallel out.
• Features newly developed large-sized aluminium insulators, combined with new vibration-proof material plus high frictional coefficient.

Specifications

• Type: All-stage FET configuration DC amplification driver unit
• Frequency response: DC – 100 kHz (with SR-009S)
• Gain: 60dB
• Harmonic distortion: 0.01% or less (1 kHz / 100 V rms output)
• Input impedance: 50 kΩ (RCA), 50 kΩx 2 (XLR)
• Maximum output voltage: 450 V rms (1 kHz)
• Bias voltage: PRO 580 V
• Operating temperature / humidity: 0 to 35 degrees C / less than 90% (non condensing)
• Input terminal: RCA x 1, XLR x 1
• Output: RCA parallel output terminal
• Power consumption: 46 W
• Dimension: 240 W x 103 H x 393 D mm (maximum protruding portion included)
• Weight: 6.3 kg

More Information

• STAX Audio SRM-700S