Pass Labs XP-22 Line Level Preamp pair but these are a good

but these are a good start

Used/Demo pair in stock

Exhaustive listening tests

The first of these was Digital Do Main in Japan

The latest SIT from Nelson Pass

Pass Labs XP-22 Line Level Preamp pair but these are a goodThe new design uses double shielded low noise toroidal transformers in external supply connected via aviation grade circular connectors using silver over oxygen free copper. The power supply is dual mono with two transformers with lower radiated and mechanical noise. Noise is the most prominent part of THD+N at low levels, so by lowering noise we get better resolution and dynamics. The gain circuitry continues to use our favorite transistors from