I owned both the Herrons and I cannnot say enough good things about Keith and his designs. The VTSP 2A and the M150 upgraded monos were my favorite gear I've ever owned. Incredibly musical. Would not hesitate to jump on a 2A, although the 1A wasn't that far behind it soundwise (the 2A was more convenient for my application).
Herron 1A,, Herron 2A, Modwright LS100 or Aesthetix Calypso?
I have narrowed down my pre choices to these. I would like to hear what opinions there are, maybe even from actual owners. I have owned a Shrimp and BAT VK3ix in the past. I definitely want to take a step up. The Calypso is at the top of my budget. I am not able to audition any, just buy and hope I made the correct choice. If it matters, my amp is a Rogue stereo 90 magnum. I am currently using the Eximus DP-1 DAC/Pre and a Salk Streamer tied to Aerial 8 speakers. Obviously I will have to pursue a DAC as well.