Stax
STAX SRM-D10 II Portable Electrostatic Headphone Amplifier/DAC
Best portable solution for audiophiles using electrostatic headphones on the go.
Experience high-fidelity STAX sound on the go with the STAX SRM-D10 II, the world's first compact electrostatic amplifier and DAC. This portable powerhouse allows you to drive all modern PRO bias STAX Earspeakers anywhere, thanks to its rechargeable battery offering up to 4.5 hours of playback. It doubles as a high-performance DAC, supporting DSD128 files for exceptional digital audio. Encased in a durable aluminum chassis and featuring an XMOS USB interface, the SRM-D10 II delivers impressive audio impact whether you're at home, in the office, or traveling.
$945.00
Owner Satisfaction
4.6
/ 5
Category Rank
255
/ 732
#255 in Headphone Amplifiers
Price vs Category Average
-32%
Below average
Output
5
/ Stax -pin PRO bias headphone output
Who it's for
- Audiophiles seeking desktop-grade electrostatic clarity in a portable form factor
- Stax enthusiasts needing high-voltage amplification on the go
- Minimalists wanting a streamlined, all-in-one electrostatic audio chain
Who should skip it
- Users owning standard dynamic or planar magnetic headphones
- Budget-conscious listeners intimidated by premium specialized audio pricing
- Commuters requiring long-lasting battery life for extended travel
Performance breakdown
Electrostatic Drive Capability
Delivers the signature STAX transparency and speed in a compact form.
Portability
Unmatched convenience for high-end electrostatic listening away from your desktop.
Digital Resolution
Robust XMOS interface handles high-resolution DSD files with impressive clarity.
Battery Endurance
Limited playback time necessitates frequent charging during longer listening sessions.
Build Integrity
Durable aluminum chassis provides a premium feel and excellent component protection.
Input Versatility
Solid selection of digital and analog inputs for diverse source pairing.
Key Specs
Output
Stax 5-pin PRO bias headphone output
Digital Input
MicroUSB (supports DSD 5.6MHz/PCM 384KHz)
Analog Input
3.5mm
Frequency Response
20Hz - 40KHz (+ 0dB, -3dB)
Total Harmonic Distortion
<0.025% / 1KHz-10KHz
Battery Life
Approximately 3.5 to 4.5 hours
Dimensions
75 (W) X 32 (H) X 141 (D) mm
Net Weight
450g
Features
- World's first compact electrostatic amplifier/DAC
- High-resolution DAC supports DSD128
- Portable design with rechargeable battery
- Durable aluminum chassis
- Powers all modern STAX PRO bias headphones
- High-quality XMOS USB interface
- Functions as DAC or amplifier
- Impressive audio impact in a small size
What customers say
Audiophiles overwhelmingly praise the STAX SRM D10 II for successfully delivering the signature Stax sound—transparent, fast, and detailed—in a portable design. Users note significant upgrades over the previous model, including a lower noise floor and improved battery stability within a premium chassis. Its dual role as a high-quality DAC and electrostatic amplifier offers excellent versatility for both desktop and mobile use. While the cost positions it as a luxury item, the consensus among Stax owners is that the D10 II justifies its premium price. It is considered the definitive, necessary companion for achieving unparalleled clarity and resolution with portable electrostatic headphones.
Know before you buy
The SRM-D10 II is designed to power all modern STAX Earspeakers that utilize the 5-pin PRO bias standard.
The SRM-D10 II functions primarily as an integrated amplifier and DAC for electrostatic headphones. It does not feature a dedicated line-level output for external amplifiers.
You can expect approximately 3.5 to 4.5 hours of playback time depending on your volume levels and the source material.
Yes, the XMOS USB interface supports high-resolution audio, including DSD128 (5.6MHz) and PCM files up to 384KHz.
Yes, the unit can be used while connected to AC power, making it suitable for both desktop use and portable listening.
The digital USB input utilizes the internal high-performance DAC to process digital files from your computer or mobile device. The 3.5mm analog input allows you to bypass the internal DAC and connect directly to an external analog source.
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