Yes. David Marihart Audio is a local NorCal dealer-distributor by appt only. I’ve met the owners and designer at the company at a NorCal show in 2019. Their room got some attention and placed well. Sounded very nice. They uppped the line even more so the past few years with a few new quality tweaks. This distributor/dealer is semi-retired now, and I’ve listened to their amps, preamps, at shows, and a few buddies homes. David now keeps one of their preamps as his own personal preamp, paired with some other SET amps too. He closed his website, but... You can find him on Facebook and he often sells on USAM. Has an amp listed there now. He’s had great dealer and service support from Margules and so has one of my friends who sent his amp back for highest level upgrades. Sounded nice before and after extended upgrades.