SRM 252S

Stax SRM-252s

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.

SRM-252S SPECIFICATIONS:

Type	:All-stage semiconductors, Low-noise dual FET input Class A operation, Pure balance DC amplifier configuration Earspeaker driver unit
Frequency Response	:DC to 35,000Hz with SR-207 (with SR-207)
High Harmonic Distortion	:Max 0.01% (1kHz at 100V r.m.s. )
Gain	:58dB (x800)
Input Terminal	:1 RCA with 1 RCA parallel out
Rated Input Level	:125mV / 100V Outputs
Max. Input Level	:30V (at minimum volume level)
Input Impedance	:50KΩ(RCA)
Max. Output Voltage	:280V r.m.s. (1kHz)
Standard Bias Voltage	:PRO 580V x 1
Power Voltage Frequency	:117V (50Hz / 60Hz)
Power Consumption	:4W DC12V
Temperature & Humidity	:0 to 35ºC / 90% max. without condensation
Dimensions	:5.2 (W) x 1.5 (H) x 5.2 (D) in
Weight	:1.2lbs
Color	:Silver

Specifications and appearance are subject to change for improvement.