Preamp Plus is back

I shipped it to William from The Headphone Experience to compare to my original prototype. This one has twice increased idle current of class A outputs, so it dissipates twice more heat, so instead of wooden sides I used thick aluminum planks to decrease the chassis temperature. The idea was, to drive planar magnetic headphones. Remember, it is a preamp that I designed as "No limit", neither by voltage, current, bandwidth, slew rate, when used as a preamp. However, 20 mA output current is enough to drive any dynamic headphones, so it has 2 TRS sockets on top of the chassis. William found that it can drive even most sensitive planar headphones, so I increased current to check if it would drive more of them. Yes, but not all of them, so as a planar headphone amp I suggest to use my Power Amp Plus, that can drive any headphones, even the hardest to drive ones. And today I finished building and testing Ultimator OTL headphone amp, that can drive any headphones.
The unique Preamp Plus is back, so I can sell it to finance my R/D work, to somebody who would enjoy a High End preamp tha can drive any dynamic headphones without additional headphone amp.

Видео Preamp Plus is back канала Wavebourn