Well there are plenty of Elise threads, but no love for its sibling the Espressivo. In my opinion for the price you won't find a better built, or sounding pure OTL valve amp. I have had mine for nearly 2 years now, it's not skipped a beat and has handled most headphones I've thrown at it. Ok so it won't power the extremely hungry planars but pairs well with pretty much everything else. You can talk about tube rolling, and please let me know if you have one, it is a very underappreciated amp here on Head-Fi. I am currently running Tesla E88CCS as the driver tubes and some Gold Grid USSR 6N6P-I power tubes, I used it on stock tubes for a while, upgraded the driver tubes to Voskhod which made it quite smooth and warm, these Tesla's made it quite mid forward but with better detail over the Voskhod. The 6N6P-I definitely cleaned up the sound and it is more precise and cleaner, quite happy with this tube combo.