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The SRM-252S is an exclusive driver unit (amplifier) for driving STAX ear speakers with PRO-bias 5 pins. Its line input can directly connect to the audio output terminal of CD player, portable audio player and PC. The SRM-252S has a simple design that excels in sound quality employing the carefully selected newest high-voltage transistors and low-noise FETs. The output stage featuring the emitter-follower configuration reinforces the driving performance and also realized the smooth sound quality. Moreover, the class-A amplification throughout the stages with no coupling capacitors reproduces exhaustively the finest nuance of music. Although the SRM-252S includes a class-A DC amplifier in a compact CD jacket size case, the internal heat is effectively dissipated through the chassis of aluminum extrusion material to improve the reliability over a long period of time. Also, the parallel output terminal was added to distribute the source signal so that a loud speaker may also be simultaneously used when source equipment has only a pair of output terminals.

1.Frequency response: DC- 35 kHz (40Vr.m.s. output SR-207, when using one unit)
2.Rated input level: 125 mV with 100V output
3.Maximum input level 30 V r.m.s. with volume at minimum setting
4.Amplification: 58 dB (x800)
5.Total harmonic distortion max. 0.01% (1 kHz / during 100 V r.m.s. output)
6.Input impedance 50 ko (RCA)
7.Maximum output voltage: 280 V r.m.s. / 1 kHz
8.Standard bias voltage DC580 V (PRO bias)
9.Power consumption DC12V, 4W/ Exclusive AC adaptor attached For your area
10.Temperature range for use Between 0 and 35C, max. 90% (no condensation)
11.External dimensions 132 (W) x 38 (H) x 132 (D) mm (without Knob, Pin jack)
12.Weight 540g
Specifications and external appearance may be changed without notice in order to improve performance.

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