The last amp I owned was a VAC 30/30 Mk 3. I now own the Art Audio Jota. I was using the VAC with Von Scweikert VR6 speakers. I am using the Art Audio with Talon Khorus speakers. Both are terrific amps, but the Jota has tighter bass, is more neutral in the midrange, and has more focus. It is also more expensive. The Diavolo has similar qualities, but with less power. VAC amps tend to be a little darker than the Art Audio. Depending on your speakers and system, this could an advantage. You can't go wrong with either one...just depends on your taste and system. The Art Audio Diavolo is going to be somewhat harder to match up with speakers that can take that massive 13 watts of power, even if it does sound like more. If your can afford a Jota, it's more of a no-brainer. Resale value is better with the VAC. Sold mine in a day. Lots of Diavolos out there. The VAC is just more versatile. It's also fairly easy to get a deal on a new VAC. I paid about $4200. for mine brand new. Customer service for either is outstanding. Art is moving to this country, but already has great US representation. You can add a volume control to the Art products, if that appeals to you.