Guy's, I'm using the First Watt (F3) or the output of the si2A3/45 with good results (Moar Powah!!). The band-aid of the EF-5 doesn't cut it:cool:!! The schmaltz and euphony are gone when more, and better controlled power is used! Great presentation with a wealth of details, the notes and sounds (a majority of them) used to stick to the diaphram...no longer!
I ordered straight from Beyer months back and they arrived last week. Needed tons of burn time and prefer Tubes. Tonally VERY much like my HP-2's. The T1 has a slightly heavy lower register with smooth midband and slight depression in the treble. Not bad, as it is very easy listen, mine will be off tomorrow to the re-cablers. Need to be pushed a bit for both balance and details to shine however.....
They will go low...very low and with little prodding.