Audiophilepure

https://www.headfonia.com/es-lab-eht-7-review/

The signal switching in the input section is controlled by a set of 5 sealed silver-alloy contact relays, designed for a long lifespan and high current capacity. The EHT-7 offers adjustable impedance (8 0hm or 16 Ohm) for the primary windings of the transformers, ensuring optimal compatibility with your source amplifier.

The EHT-7 is very simple and easy to work with. You can do nothing wrong with this lay-out and it’s easy to plug the cables and flick the switches. From the faceplate to the switches, the inputs and the headphone output, everything feels sturdy and luxurious. Just make sure not to scratch the casing.

The only thing I don’t really like is the external PSU, which looks and feels a bit cheap. I recommend using the Ferrum Hypsos or something similar.

Each EHT-7 unit enjoys a 2-year warranty. Upon ordering the user can also customize the choice of transformers, output bias, connections and more.