Stax SRM-700T Vacuum Tube High-End Electrostatic Driver

Stax SRM-700T Vacuum Tube High-End Electrostatic Driver

Released October 2020, the newly designed SRM-700T is a hybrid electrostatic headphone driver from STAX Audio. Inspired by their flagship model SRM-T8000, the 700T uses solid-state FET as a driver stage and vacuum tube as the output stage.

The first stage is a custom-made low-noise dual FET while the second stage is a clear, high slew-rate vacuum tube 6SN7. The tube output offers warm and spacious music reproduction.

Together, this hybrid design delivers a wonderfully precise, detailed sound with overtones of tube warmth. A great combination.

Features

• 6SN7 achieves a highly transparent sound
• Non-inductive winding resistors with the least inductance
• 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: FET input + vacuum tube output hybrid DC amplification driver unit
• Vacuum tube: 6SN7 x2
• 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: 340 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: 54 W
• Dimension: 240 W x 103 H x 393 D mm (maximum protruding portion included)
• Weight: 5.7 kg