Lab12 pre1 Class A Tube Preamplifier

Pre1 is Lab12's entry-level Class A tube preamplifier, built as a true dual-mono design intended to serve both solid-state and tube power amplifiers without cutting corners despite its accessible price.

A pair of matched 6922 tubes and a dedicated gain circuit run through a four-stage regulated solid-state power supply for strong filtering and power reserve under demanding musical passages. Lab12's proprietary Fine Symmetry and SRSG topologies are implemented at every stage, and a motorized Blue Velvet ALPS potentiometer with remote control rounds out day-to-day use.

Key specifications