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Sonoma Electrostatic Headphone System

This complete electrostatic system, includes the headphones, amp, and DAC - with an astonishing level of performance well beyond the cost of the total system! These are every bit as brilliantly engineered as they are beautiful, right down to the packaging, which is among the best we've ever seen.


Configuration Open-back, circumaural type
Transducer HPEL, single-ended electrostatic
Diaphragm Area 3570 mm2
Frequency Response 10 Hz – 60 kHz
Output Level Compliant with EN 60065/A12:2011 (EN50332) when driven by M1
Energizer/DAC (for all inputs)
Ear, Headband Cushions Cabretta top-grain, sheepskin leather
Input Polarized, 4-pin, self-latching connectors for left and right
Drive Cable Ultra-low capacitance, silver-plated OFHC copper, with foamed PE
insulation and Kevlar reinforcement; 2 meter length
Weight 303 grams (10.7 oz), without cable

Energizer & DAC:

USB Input USB 2.0, type B; accepts digital audio formats up to
32‑bit/384 kHz PCM and DSD via DoP (DSD64/DSD128)
Digital Coaxial Input S/PDIF; accepts digital audio formats up to 24‑bit/192 kHz PCM
Analog Input (High Level) Dual RCA; 2.1 Vrms
Analog Input (Low Level) 3.5 mm; 850 mVrms
DAC Dual mono, 32-bit/384 kHz DACs with balanced outputs
ADC 32-bit/384 kHz multi-channel ADC with balanced input


Discrete FET, single-ended, high-bias Class-A output

Noise: < 0.05%
Bandwidth: > 65 kHz
Enclosure: CNC-machined 6063 aluminum
Power Supply: External: 24 VDC, 60 VA, fixed frequency, class B-compliant SMPS;
Internal: Fully isolated, ultra-low noise linear regulation
AC Mains: World voltage compatible (90-264 V, 50-60 Hz);
power cable: 1.5 meter length
Dimensions: H x W x D: 57 mm (2.24 in) x 190 mm (7.48 in) x 290 mm (11.42 in)
Weight: 2.45 kg (5.40 lbs)