The Stax SRM-D50 Electrostatic Headphone Amplifier combines a high-performance driver with a built-in DAC, delivering versatile electrostatic sound in a compact design. An accessible entry into Stax’s energizer lineup, it offers clarity and convenience for audiophiles. Available at Len Wallis Audio, the Stax SRM-D50 Electrostatic Headphone Amplifier is ready for audition in our Lane Cove showroom.

Why Choose the Stax SRM-D50 Electrostatic Headphone Amplifier?

The Stax SRM-D50 Electrostatic Headphone Amplifier is an all-in-one solution for electrostatic audio enthusiasts. It features a built-in ESS ES9018 DAC, supporting high-resolution audio up to PCM 384 kHz and DSD 5.6 MHz.

Its versatile digital inputs include USB, optical, and coaxial options, alongside RCA analogue inputs. HomeTheaterHiFi in 2021 noted its “wonderful high frequencies” and “surprisingly deep bass,” highlighting its balanced sound profile.

The SRM-D50 achieves noise levels below 0.01% distortion at 1 kHz. This ensures a clean, transparent sound, revealing every detail in your music with precision.

With a frequency response from DC to 90 kHz, it captures the full audio spectrum effortlessly. Its 350 Vrms maximum output provides ample power for a dynamic listening experience.

Not sure which input suits your setup best? The SRM-D50’s tactile input selector toggle makes switching between sources a breeze, ensuring seamless integration.

An R-core transformer with minimal leakage flux improves efficiency by 10% over traditional designs. This enhances sound quality while keeping power consumption at a modest 30W.

Audition the Stax SRM-D50 Electrostatic Headphone Amplifier at our Lane Cove showroom. Discover why it’s an excellent choice for audiophiles seeking versatile electrostatic sound.

Technical Specifications

• Amplifier Type: Solid-state electrostatic headphone driver with DAC
• DAC Chip: ESS ES9018, high-performance audio decoding
• Op-Amp: TI OPA1642 for ultra-low distortion
• Frequency Response: DC – 90 kHz
• Maximum Output Voltage: 350 Vrms at 1 kHz
• Harmonic Distortion: 0.01% or less at 1 kHz/100 Vrms output
• Digital Inputs: USB, optical, coaxial (PCM 384 kHz, DSD 5.6 MHz)
• Analogue Input: RCA stereo pair for versatile connectivity
• Input Impedance: 50 kΩ (RCA analogue input)
• Bias Voltage: PRO 580 V
• Signal-to-Noise Ratio: >105 dB (A-weighted, at maximum output)
• Output: One 5-pin PRO bias connector
• VU Metre: Analogue with orange glow illumination
• Power Supply: R-core transformer, AC 230V, 50 Hz
• Power Consumption: 30 W
• Operating Conditions: 0°C to 35°C, <90% humidity (non-condensing)
• Chassis Material: 4 mm thick non-magnetic aluminium
• Volume Control: Precision rotary knob with smooth adjustment
• Dimensions (W x H x D): 195 x 102 x 376 mm (including protrusions)
• Weight: 4.5 kg

Read the review here.

Elevate your audio with the Stax SRM-D50 Electrostatic Headphone Amplifier at Len Wallis Audio. Browse our curated collection of Stax products here or visit our Lane Cove showroom to audition this exceptional unit. Contact us today to secure the Stax SRM-D50 Electrostatic Headphone Amplifier and experience electrostatic sound at its finest.

Len Wallis Audio Excellence Promise

Since 1978, Len Wallis Audio has been a trusted name in hi-fi, curating premium audio solutions from our Lane Cove showroom in Sydney. For over four decades, we’ve selected products that deliver outstanding performance and quality.

Our focus on innovation ensures every item meets audiophile standards. Whether upgrading or building a new system, our team helps you find the ideal audio solution for your needs.

With expert guidance and a commitment to satisfaction, we make your audio journey seamless and rewarding.

Ready to enhance your setup with the Stax SRM-D50 Electrostatic Headphone Amplifier?

Call (02) 9427 6755
Email Sales@lenwallisaudio.com.au
Or visit us at 64 Burns Bay Road, Lane Cove, NSW, 2066