Yes, this is the Mark 2 version of Triangle Art's L-200 vacuum tube stereo preamplifier. No, I have not heard the L-200 Mark 1 on its own within my system; just at shows in a complete Triangle Art system. So I have no reference to tell anyone sonically what the difference between Gen 1 and Gen 2 is. The new version utilizes a new circuit configuration described as a symmetrical signal flow layout. It is a two-module component, with the power supply isolated in a separate enclosure connected to the main preamp with an umbilical. Once in the main preamp enclosure, the power is separated into a dual mono configuration which feeds two isolated line amplification stages. Each power supply filter incorporates proprietary chokes and Mundorf capacitors. The line stage amp incorporates more Mundorf caps, AMRG resistors, and custom output transformers in a single-ended output transformer design....