SRM-700T Vacuum Tube Driver Unit (Color Black)

Hybrid tube drive with space, warmth and transparency The SRM-700T combines a low-noise FET input stage with twin 6SN7 vacuum tubes in its output stage, bringing the control and clarity of a modern electrostatic driver together with the natural warmth and dimensionality of tubes. Inspired by STAX’s flagship SRM-T8000, this hybrid design is built to reveal the speed, nuance and scale of STAX PRO-bias earspeakers. Carefully selected, pair-matched FETs, high-definition film capacitors and low-inductance resistors help preserve fine detail, transient speed and musical flow. Switch between balanced XLR and RCA sources to suit your system, use the volume-bypass function when integrating the SRM-700T into a wider setup, and take advantage of the RCA parallel output for added flexibility. For listeners who want electrostatic precision with a spacious, engaging and richly natural presentation, the SRM-700T is an exceptional partner for the STAX earspeaker range. Key highlights Hybrid design: FET input stage with twin 6SN7 tube output stage Warm, open and highly transparent presentation Switchable RCA and balanced XLR inputs Volume-bypass function and RCA parallel output Designed for STAX PRO-bias (580 V) earspeakers Specifications Type: FET input + vacuum tube output hybrid DC amplification driver unit Vacuum tube: 6SN7 Frequency response: DC - 100kHz (with one SR-009S) Gain: 60dB Harmonic distortion: 0.01% or less (1kHz/100Vrms output) Input impedance: 50kΩ (RCA), 50kΩx 2 (XLR) Maximum output voltage: 340Vrms (1kHz) Bias voltage: PRO 580V 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: 54W Dimensions: 240W x 103H x 393D mm (maximum protruding portion included) Weight: 5.7kg