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- This is Japan Domestic Market Version STAX SRM-727A Driver Unit.
The SRM-727A from STAX is the all new 2006 powerful and improved driver unit featuring a simple and stylish front panel design. Corresponds with SR-404, SR-007, SR-303, SR-202, and SR-003.
- Non return (NON-NFB) new developed, heavy-current A class amplifier, it loaded the output step. With more dynamic, it actualizes the sound quality which overflowed in the stirring impression.
- The emitter follower of the output step actualizing impedance conversion low. The dynamic range of high pass was expanded substantially. The DC amplifier constitution that does not use the coupling condenser. The input step uses high sound quality low noise FET, forming simple 2 step amplifiers.
- To evade the magnetic strain, the chassis uses the aluminum material to contribute to the high purity conversion of sound. It sets the amplification degree low, so it is easy to adjust the volume even when it is using high output CD player etc of XLR input. Equipped with parallel out terminal. PRO bias (5 pins).
Specification
| Frequency characteristic | DC-115kHz |
| Type | All-stage semiconductors Low noise dual FET input NON-NFB Class A operation, Pure balance DC amplifier configuration Earspeaker driver unit |
| Input Impedance | 50k ohms (RCA), 50k ohms x 2 (XLR) |
| Input Sensitivity | 200mV/100V output |
| Amplification degree | 54dB |
| Harmonic Distortion | 0.01% or less (100~10kHz/100 Vr.m.s. output) |
| Input terminal | 1 (RCA⇔XLR) |
| Installed Capacity Voltage | 450V r.m.s (1kHz) |
| Standard Bias Voltage | PRO 580Vx2 |
| AC Power Voltage | 100V (50~60Hz) |
| Power Consumption | 46W |
| Operating Temperature Range | 0~35C |
| Operational ambient Humidity | 90% |
| Vacuum tubes employed | 6FQ7/6CG7 4 PCS |
| Dimensions | 195(W)×103(H)×420(D)mm |
| Weight | 5.2kg |
