I am very happy with my Audio Space ref. 3.1 KT88 integrated. I came from a Llano Designs A200 and Thor Audio T1000MkII preamp. Can't go rock concert loud, but detail, soundstage, visceral musicality in spades. Bought mine from Albert Von Schweikert on his recommendation. Caps were upgraded by Albert prior to shipping to me. Upgraded to Gold Lion tubes and have no desire to upgrade at this time. Your speakers will be a factor so YMMV.
Happy Listening..
Happy Listening..