David Berning Quadrature 200W OTL valve amplifier Solgt

David Berning Quadrature 200W OTL valve amplifier The output-transformer-less Quadrature Z is a 200W valve mono-bloc design, using Berning’s patented zero-hysteresis circuit, while the name Quadrature is an elegant way to describe the interleaving of the impedance conversion process, designed to eliminate conversion dead time. What this means to people who don’t speak Technical Geek is that the amplifier can drive relatively low-impedance loads (something an OTL design typically fails to do) and yet with the sheer transparency and openness of OTL, and a sense of pace and dynamics than you may not find anywhere else in audio. The Quadratures are equipped with Stillpoints TM OEM Universal Resonance Dampers. A unique wrap-around shield prevents undesirable signal bleeding from the controls or from the input/output jacks to the audio circuit board. Routine tube replacement should not be needed with normal usage, and 10,000-hour lifetime should be expected. Eliminating all the problems usually associated with OTL designs, they have preserved all those things that commend them, such as their astonishing openness and transparency. And valve life is very impressive too, at a projected 20,000 hours. The Quadrature Z are quick, capable and almost intuitively direct in its communication, this is an amplifier than can beguile, astonish and thrill. It’s no surprise the David Berning Quadrature Z has been voted power amplifier of the year by many reviewers.. Original price: £25,000/pair in the UK. These are one owner, me. And have been used sparingly. They are just to powerful for my new Cube Nenuphar speakers. They come with original packaging and manual. To really understand this exceptional amplifier read https://davidberning.com/products/qz Or the Reviews - https://davidberning.com/Files/reviews/BerningQZ-hifiplus2009powerampyearaward.pdf https://davidberning.com/Files/reviews/BerningQZ-hifiplus200811.pdf This a Private Sale, there is no return, no guarantee and no exchange. The goods are sold under exclusion of any warranty. Shipping must be organised by buyer.