All voltages are electronically stabilized and filtered generously in order to optimize the residual noise level. The schematic design guarantees low noise and also stable output voltages. The good qualities of the model Tubelife-2 were improved further. We replaced the unshielded flat transformer of the Tubelife-2 through a shielded ring transformer with static shield between primary and secondary and a magnetic shield of transformer sheet metal.

In the regulation of heating voltage a soft start circuit avoids the cold electric push and thus extends the life of the tubes of microphones. The full voltage will be reached after approximately one second.

At the rear side of PSU the Input as 6-pin XLR female socket is built-in. The Output is standard 3-pin XLR male socket. The symmetrical audio voltage of the microphone are directly connected to the XLR Out of the PSU.