I just bought a pair of used Tanto V1 here on Audiogon and couldn't be happier with the sound. I've been driving them with my favorite integrated of all time, the KT90-based push-pull Graaf GM50B, but I'm also going to try them with a Gamut SS integrated to see just how much bass the they're capable of. Amazing output for their size. Good WAF too. I haven't heard the newest V2 model, but if they are anything like these, they're keepers!
