The World Designs KEL84 I bought from Peter (Petrat). It goes rather nicely with the Kelly Transducer KT2 speakers I've just refurbished - there's a thread on here somewhere. I'm also into the reduce the box count phase - the KEL is an integrated amp. No doubt in the future I'll go pre-power again. The Firebottle worked very well too with my Emotiva pre now up for sale.