Last year was my first time at capital audio fest, and out of all the rooms I visited, the Volti room with border patrol 300B amplification, Innous front end, and Triode Wire Labs cabling stopped me dead in my tracks. The combination was sublime, and I ended up spending a longer time there and chatting with the hosts.
Guttenberg has addressed his review methodology publicly including why he doesn’t do negative reviews (with at least one exception):