EL34 Integrated

One other possibility: Harmon -Kardon MKV , uses 5881 , or EL34's with Huge output transformers, sound similar ( if not indentical) to the famous Citation II's . I found a working amp in Ann Arbor , MI for $175. For my money by far the best buy, built like a tank.
Good listening and good luck,
Richard

Besides that you can pick one up cheaply from me, I honestly do have to recommend the Sophia el-34 - it can drive my 90 dB speakers to unlistenable levels, has excellent detail and all the qualities praised in it's little bro - the sophia Baby.

The Ars Sonum is a $4,000 bargain (given how expensive comparable(?) separates would cost, and it is doubtful than any integrated amp can sound better with the Merlins.

Hands down the E.A.R 834 !

The EAR is certainly a nice piece, but it is very unlikely to be as good as the Ars for the Merlins; but an excellent integrated nevertheless.