I have a Topping TP20 MkII which I really like. However I'm curious about testing out a similar, but more powerful, amp. Being very happy with the TP20 (and a "Super T-Amp" before that) I've been looking at the TP60 and the TAMP-90. The TAMP-90 I've found some information on and how the sound is compared to the 2020 and 2024 based amps. Most users seem to be happy with it. The TP60, on the other hand, I haven't found that much about. Which one would you say is the better one regarding sound quality? Are they different in sound? The interior of the Topping LOOKS more professional, but that doesn't have mean anything. The Topping have two inputs, a plus, but not a deal breaker. It also have better looks, which is nice, but the sound is most important. Are there other similar amps out there at about the same price that I should look into?