HONGSHU AUDIO EH-1 V4 + EHA-1 is a complete open-back electrostatic headphone system. Rather than leaving the headphone, bias standard, and amplifier as separate matching decisions, it brings them together as one focused desktop listening system.

A 4-inch electrostatic driver at the centre

The EH-1 uses a 4-inch circular full-range electrostatic driver in a fully open-back design. Its extremely light diaphragm is engineered to present detail, transients, and spatial information with ease, while the open construction gives the presentation room to breathe.

A complete electrostatic system

The supplied EHA-1 is the dedicated electrostatic amplifier for the EH-1. Built around the standard 580V Pro Bias format, it provides Bass Boost and left/right balance adjustment, so the system can be fine-tuned for the recording, source chain, and your listening preference. The included amplifier gives first-time electrostatic listeners a clear path into the format without beginning with a complicated compatibility search.

Light enough for longer sessions

At approximately 295g without cable, the EH-1 keeps the headphone itself remarkably light for a full-size electrostatic design. Combined with considered clamping force and earpad fit, it is made for extended albums, live recordings, and long listening sessions.

Designed for clarity, speed, and space

The EH-1 is voiced around the clean outlines, quick response, and open presentation associated with electrostatic headphones, while maintaining a coherent musical flow. It is a natural choice for listeners who want to explore air, separation, and spatial layering within familiar recordings. Final sound will vary with source, DAC, setup, and level; we recommend auditioning with music you know well.

Specifications

* Based on the supplied EH-1 / EHA-1 specification artwork. ** Connector, cable, earpad, power, and package configuration must be confirmed against the actual SKU before publishing.

In the box

• HONGSHU AUDIO EH-1 V4 electrostatic headphones
• EHA-1 electrostatic headphone amplifier
• EC-1 headphone cable, approximately 1.8m**
• 12V DC power supply**
• 2mm hex key and accessories**

Important use notes

• The EH-1 is open-back. It does not isolate outside sound and will leak sound into the room.
• Do not connect the EH-1 directly to a standard 3.5mm, 4.4mm, or XLR headphone output.
• Use the included EHA-1 or a confirmed-compatible 580V Pro Bias electrostatic amplifier, following the equipment instructions for connection and power-down.

Contact us to arrange an audition or to confirm the current version, inventory, connector, and package configuration.