The Stax SRM-400S also has a newly designed power transformer for the low voltage circuit winding, working alongside a conventional power transformer for the high voltage circuit. The former is claimed to improve power efficiency and sound quality. The new chassis is more rigid, with a resonance-reducing hybrid structure combining non-magnetic aluminium with pressed steel. Environmentally friendly, specially selected passive components are used, says the company, with no coupling condensers. There’s a choice of unbalanced RCA or balanced XLR line-level inputs around the back.
Stax says the new SRM-400S combines the fine sound balance of its predecessor with a higher resolution sound. This is claimed to be ideal for the company’s high-end Lambda series of earspeakers but also benefits its more affordable designs. Frequency response is quoted as DC to 90kHz, with a gain of 60dB and total harmonic distortion of less than 0.01% (1kHz, 100V rms output). Vital statistics are 195x102x376mm (HxWxD) and 3.4kg.
The Stax SRM-400S will be available in early June 2021 and will sell for £1,295.
For more information visit Stax
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