Auditorium 23 Step Up Transformer

For years Keith Aschenbrenner has been building step up transformers for Denon, Ortofon and EMT cartridges. They are legendary and sound sublime.

Three versions available.

Jules Coleman, American Wired: "The A23 step-up may be small and easy to place, but it packs a hell of a wallop. In fact, getting the measure of this step-up was surprisingly easy. The A23 SPU step up is incredibly dynamic and extended, from top to bottom. It is neutral, extremely vivid and present. While it is by no means lean or bleached, it is not as weighty as the other step ups I had on hand. It is primarily about speed, openness, extension, clarity and presence. I have reason to believe that its designer, Keith Aschenbrenner, voiced this unit around the basic SPU Classic, which like the Denon 103, is all about tonality in the same sense that the folks at Audio Note UK claim their components are. Both cartridges favor the body of notes over the leading edge and weight over speed.The A23 Denon 103 step up is a perfect complement for the cartridge of the same name. Played through it, the Denon 103 maintains its body and weight, but its apparent speed and resolution improve dramatically, especially throughout the upper registers. The A23 step up for the SPU has the same impact and would be a perfect match with the standard SPU Classic."