Zd542,
I think you need to compare the A21 with Pass Aleph while driving the Aerial 7T. The Pass would probably do great with high sensitivity speakers, but might not sound good with the Aerials. Ricred1's room is also not a small one, so the Pass would not help there either.
One thing is - the A21 does not loose it's value as much. So Ricred1 could always sell the amp if he wants to upgrade. For now I think he has made the right choice. My only suggestion, based on personal experience would be, to go with a preamp that has XLR outs. It may have been my TVC, but my A21 is in a different league when used with the TVC connected through XLR Vs the RCA.
I think you need to compare the A21 with Pass Aleph while driving the Aerial 7T. The Pass would probably do great with high sensitivity speakers, but might not sound good with the Aerials. Ricred1's room is also not a small one, so the Pass would not help there either.
One thing is - the A21 does not loose it's value as much. So Ricred1 could always sell the amp if he wants to upgrade. For now I think he has made the right choice. My only suggestion, based on personal experience would be, to go with a preamp that has XLR outs. It may have been my TVC, but my A21 is in a different league when used with the TVC connected through XLR Vs the RCA.