STAX SRM-500T Hybrid Electrostatic Headphone Driver

Stax introduces a new model SRM-500T to replace its successor of SRM-006tS. The SRM-500T utilizes a pair of 6FQ7/6CG7 vacuum tubes as the output, driven by custom-made low noise dual FET. Stax pride itself in offering a great value electrostatic driver at the best possible performance. The newly designed power transformer enables power efficiency. As a result, it achieves an improved sound quality than the conventional vacuum tube output driver unit found in SRM-006tS. Specification Type: FET input + vacuum tube output hybrid DC amplification driver unit Vacuum tube: 6FQ7/6CG7 Frequency response: DC - 90kHz (with one SR-L500 MK2) Gain: 60dB Harmonic distortion: 0.01% or less (1kHz/100Vrms output) Input impedance: 50kΩ (RCA), 50kΩx 2 (XLR) Maximum output voltage: 300Vrms (1kHz) Bias voltage: DC 580V Operating temperature / humidity: 0 to 35 degrees C / less than 90% (non condensing) Input terminal: RCA x 1, XLR x 1(mutual exclusion input) Output: RCA parallel outpu