AMPLIFIERS
3ES (2nd gen) Electrostatic Headphone Amplifier
3ES (2nd gen) Electrostatic Headphone Amplifier
NEW RELEASE!
BTO (build to order), ships in 3–4 weeks
Limited time, FREE shipping worldwide
Designed and assembled in New York, USA
3-year limited warranty [learn more]
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Overview
With over 15 years of experience in electrostatic amplifier designs, the all-new 3ES (2nd generation) is our flagship electrostatic headphone amplifier. The 3ES 2nd gen features a redesigned output stage utilizing a matching quad of 300B power tubes, then output through our house-made push-pull output transformers, delivering a powerful, pure-tube sound—the ideal match for electrostatic headphones.
A newly redesigned driver stage offers two modes of operation: TUBE or HYBRID. In TUBE mode, a pair of 6SN7 driver tubes is used, delivering a warm, organic, and harmonically rich presentation with a spacious soundstage, perfect for listeners who value natural warmth and musicality. In HYBRID mode, precision transistor amplifiers are engaged, offering a faster, more dynamic response with tighter bass control and enhanced detail retrieval, ideal for those who prefer maximum clarity and accuracy. These two driver modes allow the user to conveniently choose their sound preferences. The 3ES maintains the same architecture as our flagship WA33 (2nd gen) dynamic headphones amplifier in a two-tier chassis design, where the top section is an amplifier coupled to the power supply using our internal coupling architecture (ICA) technology. Tube configuration includes two 6SN7 drivers, four 300B power output tubes, and one 5U4G rectifier tube.
The new 3ES (2nd generation) is simply without equal, delivering unmatched musicality, power, and precision. For those seeking the absolute best for their electrostatic headphones, 3ES (2nd gen) is a league of its own.
3ES (2nd gen) Standard Edition in Silver color
3ES (2nd gen) Standard Edition in Silver color with STAX SR-X9000 headphone (sold separately)
Updated to 2nd generation in Sept 2025 (final specs to be updated)
Re-designed the output stage using our newly developed output transformers
Re-designed driver stage using our own STEP-UP Driver
User-selectable driver using 6SN7 or precision operational amplifier
Compatible with 5-pin 580v (Pro-bias) for STAX, Audeze, HiFiMan, MrSpeakers electrostatic headphones
Dual headphone outputs [simultaneous operation for two (2) of the same make and model headphones]
TKD (Tokyo Ko-on Denpa) 4-channel balanced smooth potentiometer
XLR input x 2, RCA input x 1
Maximum output 1500Vrms
Anodized aluminum chassis, available in black or silver
Self-biasing with compatible tubes [chart]
Dimensions: 17.5"(W), 12"(D), 13"(H) with tubes, weight 54 lbs. / 24.5 kg.
Voltage: AC 100 - 120V 60HZ or AC220 - 240V, 50HZ, voltage built to destination country
Designed and assembled in New York, USA
Three-year limited warranty [learn more]
Highlights
3ES Standard Edition. *Specifications and appearance are subject to change for improvement without notice.
Elite Edition Adds:
Mundorf Supreme Silver/Gold audio capacitors
Single Crystal copper hook-up and signal wires are used throughout.
Alps RK50 4-channel volume control in brass enclosure
Cardas Audio XLR and WBT RCA connectors
3ES Elite Edition 24k gold-plated plaque
3ES (2nd gen) Elite Edition in black
3ES (2nd gen) Elite Edition in black
3ES (2nd gen) Standard or Elite Edition electrostatic headphone amplifier x 1
300B vacuum tube x 4
6SN7 vacuum tube x 2
5U4G (5U3C) rectifier tube x 1
Quick start guide
*AC power cord and audio cables are not included
