Stax SRM-700T Vacuum Tube Driver Unit

The SRM-700T employs a sophisticated hybrid amplification architecture, pairing a custom low-noise dual FET input stage with a 6SN7 GT vacuum tube in the second stage—the foundational design that inspired the 6FQ7 topology. This configuration delivers straightforward, authoritative performance with refined sonic characteristics. High-grade non-inductive VISHAY resistors serve as load elements, enabling rapid transient response and extended dynamic range. The result is a transparent, tube-driven presentation marked by warmth and spatial depth, elevating the listening experience with enhanced clarity and musicality. ●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●Dimension: 240W x 103H x 393D mm (maximum protruding portion included)  ●Weight: 5.7kg