Stax SRM-D50
Image source — © Stax
Model name
SRM-D50
Maximum Power, 32 Ohms (mW RMS per channel)
N/A
Maximum Power, 50 Ohms (mW RMS per channel)
N/A
Maximum Power, 300 Ohms (mW RMS per channel)
N/A
Maximum Power, 600 Ohms (mW RMS per channel)
N/A
Frequency response low +/- 3dB (Hz)
20
Frequency response high +/- 3dB (Hz)
40 000
Gain (dBu)
59
THD (% at 1V RMS, 300 ohms)
0.025
Signal to Noise Ratio (dB)
N/A
IMD (%, CCIR, 300 Ohms)
N/A
Crosstalk (dB, 20Hz-20KHz, 300 Ohms)
N/A
Output Impedance (Ohms)
N/A
Dimensions (mm)
192 × 67 × 268
Weight (g)
4500
Official link
The SRM-270S driver is equipped with input stages on selected FET transistors, the output stages are built according to the emitter repeater scheme. The frequency range is 0 Hz – 35 kHz. The nominal input level is 125 mV (with an output voltage of 100 V). The gain is 58 dB. Dimensions 132 x 153 x 38 mm, weight 540 g.
Fully semiconductor high-end driver amplifier Stax SRM-700S from the world-renowned manufacturer of electrostatic equipment. In the Stax SRM-700S amplifier driver, the developers of STAX, in addition to traditional solutions, for the first time applied a lot of innovations that had not previously been used in the design of proprietary equipment.
The hybrid driver-amplifier of the high-end Stax SRM-700T class from the world-famous manufacturer of electrostatic equipment. The Stax SRM-700T driver amplifier is a further development of the company's hybrid T-line of amplifiers, the first representative of which was the flagship SRM-T8000 Silver.
The Stax SRM-500T headphone amplifier is a tube driver, it is a receiver of the SRM-006tS model. The model has custom low-noise FET transistors in the first stage, and high–voltage 6FQ7/6CG7 dual triodes in the output stage. The scheme is traditional for the company, however, the developers report that they have managed to reduce power consumption and improve sound quality.
The Stax SRM-400S looks like the SRM-500T (even the dimensions are the same!), but unlike the older model, it uses a classic transistor path (which, in fact, means the letter S, not T, which is used for the lamp). The amplifier has a balanced output (and previously it appeared only in the "X" version from 353, although it was very much requested in this class of equipment), as well as separate transformers for low-current and high-current circuits and a new rigid chassis.