[Promick]

I bought it on Ebay for $ 24. This is a clone of Rystl Electro-3000 & Alarik CIS-3000 and Yes they are electrostatic (electret). I can tell one thing from the sound: it's very soft! This is the first time I've seen this..

 

[plmon]

Wow, interesting find! Have any more impressions of them coming up? I've been looking into vintage headphones lately and came across the Rystl a few times, but haven't been able to find many details about how they sound.

 

[Promick]

I don't even know how to describe their sound exactly. Electrostatic headphones have always had a very detailed sound. There is definitely no such sound here. It's like listening through cotton wool! But the construction itself is very convenient. My head doesn't get tired. I don't know why, but I still like the sound. Apparently it is not ordinary... I just have a lot of vintage headphones of various types. So I want something special..