Well, got the A-100 last night. My initial thoughts are that it's a very crisp, clear, accurate, neutral sounding amp. Doesn't add or take away and presents everything with very fine detail. Unfortunately, since I have been using the Pioneer A20 for a couple of years and have had the bass turned up to 2 o'clock to get a good sound, the A-100 sounds a little bass shy on first glance. Going to give it some time to break in a bit and see if some more warmth, bloom, thickness fills in...but I'm not hopeful. The other culprit I'm sure is my speakers. Dentons are very polite and unless you give them the oomph, they probably won't make it for you either. So, if you have the right equipment, I could see the A-100 being a great little desk amp. If you need it to produce more bass than the source (in my case the Onkyo 7030 CD player), then probably not your kettle. We'll see...going to give it another week or so to show it's stuff. If it doesn't improve, the next option might be the Onkyo 9010 amp, or just sticking w the Pioneer A20.