Electrostatics is the highest technolegy in headphones world!,
But it have the most expensive price in headphones world.
Koss seccessfolly made a good amp+headphones for cheap price,
but with cheaper materials that made it still good for usage and really fair product.
but much cheaper feeling then any Stax headphones,
and some dissadvantage on sound quality and much cheaper build quality then any Stax amp(energizer)
So, for better sounding you have to spend more money on good amp.
*woo audio wee is a transformare energizer that having the same quality as your speaker amp. not difficulty build (but transformers cost lots of money), but still not worth for independent amp for electrostatic-headphones for price of $ 600.
Compare to RR1, Koss have cheaper features as:
- cheaper headband.
- build in cable.
- short cable (with too long extend cable).
- plasticy light feel.
- ear pads fair quality but not overwhelmed, most prefer to replace them.
- most prefer to buy some Stax or other amp with koss from the begining, better build quality + beter sound quality
I sure that RR1 having less plastic feeling then Stax l300 (most metel parts), and better headband and pads then Koss (like Stax)
and beter design then most of them.
after saw this pictore on DIY forum here I start to understand the dissadvantage of plastic thin headband
RR1 using a metal one