David Berning Co Quadrature Z –– Prototype!

Here's an opportunity to own a one-of-a-kind pair of amplifiers made by the legendary David Berning. I purchased these from the original owner, an authorized dealer, in June 2022. Here's some information about the history of these amplifiers: "In 2007, I approached David Berning asking him to de...

Here's an opportunity to own a one-of-a-kind pair of amplifiers made by the l...