Thanks for the iphone App idea. My daughter in Victoria has one & will be coming up to visit in a couple weeks. I'll get her to download the app & try it out.

I'll put on my new Spiro Gyra SACD at my tube amp's 10 o'clock volume (moderate for me) & 11 o'clock (getting too loud) to see what Dbs my system is putting out at my couch.

We then should be able to nail down roughly whether the EP-400 should be able deliver like my F1000 does. The EP-400 being well over 5Xs more powerful than the F1000, I expect that it should have no trouble equaling or exceeding it.

Super idea, thanks again...