ES Lab EHT-7 Electrostatic Headphone Energizer

ES Lab EHT-7 Electrostatic Headphone Energizer

The ES Lab EHT-7 is an electrostatic headphone energizer designed to unlock the full potential of your electrostatic headphones by integrating with your existing speaker or headphone amplifier. This product, crafted by ES Lab, is for music enthusiasts seeking ultimate performance and transparency from their electrostatic headphones.

Key Features and Performance

-    Exceptional Driving Capabilities The EHT-7 delivers a natural and realistic soundstage, preserving the ultimate transparency and detail retrieval that electrostatic headphones are known for.

- High Voltage Safety Unlike conventional transformer setups, the EHT-7 uses innovative design and technology for reliable and safe handling of the high voltage required for electrostatic headphones.

- Clean Bias Supply It provides a clean bias supply for optimal performance by utilizing multiple stages of power processing, which contrasts with the noisier, outdated voltage multiplier designs. The system generates the 580V bias required for Pro Bias electrostatic headphones.

Input Options and Compatibility

- Features two input options: speaker termination for connection to a speaker amplifier, and XLR balanced input for a headphone amplifier.

- Offers adjustable impedance (8Ω or 16Ω) for the primary windings of the transformers to ensure optimal compatibility with your source amplifier.

- Advanced Safety Features The EHT-7 includes multiple measures to protect the headphone, source amplifier, and the energizer itself:

 - A clipping circuit using zener diodes prevents signals exceeding 1150V peak (stator-to-stator) from reaching the headphone.

- Matched load resistors guard against damage to the transformers from excessive DC current or impedance fluctuations.

- A high-voltage ballast resistor limits current before the bias reaches the headphone.

- Built-in short-circuit protection in both the low-voltage regulator and high-voltage DC-DC converter.

- The input circuitry is disabled when the unit is powered off.

General Specifications

Output Connection Type: Stax 5-pin Pro Bias 

Output Voltage Protection Threshold:1150 peak (stator-to-stator) 

Power Input:15\VDC/0.2A

Power Consumption:3W

Dimensions:215mm (Length) X $235mm(Width) X 80mm(Height)

Weight:3.1KG

Warranty: 2 years 

Product Origin: Designed and Made in Hong Kong