Warwick Acoustics APERIO electrostatic headphone system

Headphone amps and amp/DACs
Warwick Acoustics APERIO

I like to try to offer critical commentary where appropriate, but there really is nothing I can fault in the APERIO’s sonic performance. The only drawback I encountered—and it is one common to most electrostatic headphone systems I have heard—is that if I moved my head suddenly while listening, pressure levels within the ear cups would change momentarily, causing a soft ‘clicking sound’ from the diaphragms. That aside, the APERIO listeniing experience was an unalloyed joy.

The APERIO is the finest headphone system I have ever had in my home, and also the finest I have ever heard (including some that cost far more than the APERIO does). If you seek a highly capable and profoundly revealing music exploration tool, the APERIO is the system for you. 


The APERIO headphone

Type: Circumaural, open-back, electrostatic headphone

Drivers: Full-range, low mass, balanced-drive high-precision electrostatic laminate (BD-HPEL) electrostatic drivers

Effective driver area: 3570 mm²

Frequency response: 10 Hz–60 kHz

Weight: 405 grams (excluding cables)

The APERIO preamp/amp/DAC module

Type: Class A solid-state, balanced output electrostatic headphone amplifier, preamplifier, and DAC

Analogue Inputs: One balanced stereo input (via XLR jacks), one single-ended stereo input (via RCA jack), with High/Low gain switches for both inputs

Analogue Outputs: One balanced stereo output (via XLR jacks), one single-ended stereo output (via RCA jacks). Both outputs deliver high current and switch-selectable +5 dB gain

Digital Inputs: USB digital input, one coaxial S/PDIF digital input, one AES3 input (via XLR jack), and one Network/Ethernet input (via RJ45 jack)

Outputs: One electrostatic/bias voltage output jack

DAC: Dual mono, 32-bit/384 kHz DACs with balanced outputs for PCM and DSD

DSP: For PCM only, 64-bit (double-precision) fixed-point processing at native sample rates

Digital audio formats supported: 

USB: All PCM inputs up to 32‑bit/384 kHz and DSD native or DoP inputs up to DSD256

Coaxial S/PDIF: All PCM inputs up to 24-bit/192 kHz

AES3: All PCM inputs up to 24-bit/192 kHz

Network/Ethernet: All PCM inputs up to 32‑bit/384 kHz and DSD native or DoP inputs up to DSD256.

Frequency response: Bandwidth > 65 kHz

Distortion + Noise: < 0.001%

Dimensions (H×W×D): 68 × 413 × 351mm

Weight: 7.4 kg (not including power supply)

System Price: £20,000 (UK), $24,000 (US)


Warwick Acoustics Ltd

Mira Technology Park Suite 1.02, NW05, Watling Street, Nuneaton, United Kingdom CV10 OUT

Tel: +44 (0) 24 7722 0377

URL: warwickacoustics.com

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