The BHK Signature preamplifier from PS Audio features two 12AU7 dual triode vacuum tubes in the input stage that act as a zero feedback balanced input amplification pair. A combination of an input stepped attenuator, built around the highest quality passive components for coarse volume adjustments, coupled with controlling the actual gain of the vacuum tube for finer steps. The output stage is a high-bias class A MOSFET design that is unaffected by cable and power amplifier interface challenges.

Including box and remote. Newprice is 8.599 euro (pricelist is available), now for 2.990 euro.