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The SRM-727II features non-feedback (NON-NFB) output stage for the first time ever in STAX drivers. Large current emitter follower Class A amplification circuit. This makes it possible to achieve a much more vivid and dynamic sound quality with frequency response raised to 115kHz (from 100kHz).
The electrostatic method is a playback method which involves the installation of drive electrodes on either side of a high-polymer film diaphragm with a thickness of only a few microns into each of which a plus signal and a minus signal are fed. This means that XLR connection with a pure balance output CD player makes it possible to listen to the original sound permitted by the balance system without a conversion circuit.
Frequency Response: DC to 115,000Hz w/ either SR-007 or SR-404
High Frequency Distortion: Max. 0.01% (with 100 to 10kHz, 100V r.m.s. output)
Gain: 54dB (x500)
Input Terminal: RCA or XLR with 1 RCA parallel out
Rated Input Level: 200mV (with 100V output)
Input Impedance: 50Kohm (RCA), 50kohm x2(XLR)
Max. Output Voltage: 450V r.m.s. (1kHz)
Standard Bias Voltage: PRO 580V x 2
Operating Power Voltage Frequency: 117V (50Hz / 60Hz)
Power Consumption: 46W
Ambient Temperature & Humidity: 0 to 35ºC / 90% max. without condensation
External Dimensions: 7.7 (W) x 4.1 (H) x 16.5 (D) in