



STAX Bundle Set SR-X1 + SRM-400S Electrostatic Headphone and Amplifier
STAX Bundle Set SR-X1 + SRM-400S
Earspeaker System (SR-X1 + SRM-400S)
with:
• Wide Frequency Response: Ranging from DC to 35,000Hz for full-spectrum audio reproduction.
• Minimal Distortion: Harmonic distortion of 0.01% or less ensures crystal-clear sound.
• Heritage Design: Embodying the spirit and concept from the SR-1 and SR-X earspeakers.
Specifications:
• Type:Push-pull electrostatic circular speaker, rear-opening enclosure
• Unit Shape:Medium-sized circular
• Fixed electrodes: High-precision etched electrodes
• Playback frequency range: 7-41,000Hz
• Capacitance: 110pF (including attached cable)
• Impedance: 145kΩ (at 10kHz/including 2.5m attached cable)
• Sound pressure sensitivity: 101dB/100Vr.m.s. input/1kHz
• Bias voltage: 580V DC
• Cable conductor: OFC
• Cable shape : Parallel 6-core, wide low capacitance cable, 2.5m
• Earpads: Genuine sheepskin leather (skin contact area), artificial leather
(attachment area)
• Weight: 234g (main unit only)
SRM-400S (Semiconductor Driver)
SPECIFICATIONS
- All-stage FET configuration DC amplification driver unit
- Frequency response: DC - 90kHz (with one SR-L500 MK2)
- Gain: 60dB
- Harmonic distortion: 0.01% or less (1kHz/100Vrms output)
- Input impedance: 50k Ω (RCA), 50k Ω x 2 (XLR)
- Maximum output voltage: 400Vrms (1kHz)
- Bias voltage: DC 580V
- Operating temperature / humidity: 0 to 35 degrees celsius / less than 90% (non condensing)
- Input terminal: RCA x 1, XLR x 1(mutual exclusion input)
- Output: RCA parallel output terminal
- Power consumption: 30W
- Dimension: 195 (W) x 102 (H) x 376 (D) mm (maximum protruding portion included)
- Weight: 3.4kg
Pairs well with

STAX Bundle Set SR-X1 + SRM-400S Electrostatic Headphone and Amplifier
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FAQs
Please read our FAQs page to find out more.
What products does Audio67 offer?
Audio67 specializes in high-quality headsets and microphones for gaming, professional use, and casual listening.
Where can I purchase Audio67 products?
You can buy Audio67 headsets and microphones from our official website, authorized retailers, and select online marketplaces.
Are Audio67 headsets compatible with all devices?
Most of our headsets are compatible with PCs, gaming consoles (PS5, Xbox, etc.), mobile devices, and tablets. Check the product specifications for detailed compatibility.
Are Audio67 headsets wireless or wired?
We offer both wired and wireless headsets. Please check the product description for details on connectivity.