Why Choose the Stax SRM-700T Valve Electrostatic Headphone Amplifier?

Introduced in 2020, the Stax SRM-700T Valve Electrostatic Headphone Amplifier is a hybrid marvel. It pairs beautifully with the Stax SR-009S Electrostatic Headphones, delivering a lush, spacious soundstage.

Unlike its sibling, the Stax SRM-700S, which uses a solid-state FET output for precise clarity, the SRM-700T features 6SN7 valves for a richer, warmer tone. AudioKey Reviews in 2021 noted its “beguiling musicality” and “incredible spaciousness,” perfect for a you-are-there realism.

The hybrid design uses a dual FET input stage for low noise, below 0.01% distortion at 1 kHz. The 6SN7 valve output stage adds a harmonic richness, especially in the midrange, for a fuller sound.

With a frequency response from DC to 100 kHz, it captures every detail across the spectrum. Its 340 Vrms maximum output ensures even demanding electrostatics are driven effortlessly.

Love the tube glow but worried about complexity? The SRM-700T’s short warm-up sequence, indicated by an amber flashing LED, makes it user-friendly while delivering that valve magic.

A new low-voltage winding transformer improves efficiency over older models like the SRM-006tS by 15%. This enhances sound quality while reducing power consumption for a greener footprint.

Audition the Stax SRM-700T Valve Electrostatic Headphone Amplifier at our Lane Cove showroom. Discover why it’s a top choice for audiophiles seeking Japan’s warm electrostatic essence.

Technical Specifications

• Amplifier Type: FET input + vacuum tube output hybrid DC driver
• Input Stage: Custom-made low-noise dual FET
• Output Stage: High-voltage 6SN7 dual triode valves
• Frequency Response: DC – 100 kHz (with one SR-009S)
• Gain: 60 dB
• Harmonic Distortion: 0.01% or less at 1 kHz/100 Vrms output
• Input Impedance: 50 kΩ (RCA), 100 kΩ (XLR balanced)
• Maximum Output Voltage: 340 Vrms at 1 kHz
• Bias Voltage: PRO 580 V
• Signal-to-Noise Ratio: >110 dB (A-weighted, at maximum output)
• Inputs: RCA x 1, XLR x 1 (mutual exclusion)
• Outputs: RCA parallel output terminal
• Electrostatic Outputs: Two 5-pin PRO bias connectors
• Power Supply: Toroidal transformer with low-voltage winding, AC 230V, 50 Hz
• Power Consumption: 54 W
• Operating Conditions: 0°C to 35°C, <90% humidity (non-condensing)
• Chassis Material: Aluminium with non-magnetic properties
• Volume Control: Precision Alps potentiometer for smooth adjustment
• Dimensions (W x H x D): 240 x 103 x 393 mm (including protrusions)
• Weight: 5.7 kg