I recently bought a Parasound A52 amp to replace my Boston Acoustics A7200 amp. I was looking for a amp that was a bit better with music and I had seen mention of the Halo line quite a bit in this thread.
I talked to Matt (AA) and asked him what he thought of the Halo line and he said they sounded great with Dynaudio speakers. With my room not being very big (13'd x 17'w with 8' ceilings) it was suggested that the A 52 would have plenty of power. I was lucky to find one on audio-gon at a very good price in excellent condition.
After a few modifications to my stand due to the A 52s depth I was ready to listen to some music. I can say without a doubt the A 52 is a fine sounding amp. The A7200 is no dog either but I found the A 52 to be more refined than the A7200. I have read a few threads on the forum debating the fact that all amps sound the same I would have to strongly disagree.
When I was demoing speakers before I decided on the Focus 140s I always took the same CDs with me. Donald Fagens: Morph the Cat, Dire Straits: Brothers in Arms, Diana Krall: Girl in the Other Room and Mark Knoflers Golden Heart. I have listened to select tracks from each of these discs many, many times.
After listening to the 140s for about a month with the A7200 I thought the sound was excellent but the A 52 takes SQ to the next level. The first thing I noticed was how much more authority the bass had and was dispersed somewhat more as well. The the soundstage also improved with more depth and width. I did my comparison with my Anthem AVM 30 in analog/direct using balanced connections and the same tracks that I mentioned earlier.
Overall I did not think the slight increase in power the A 52 had over the A7200 would be a factor but it did. I feel the best purchase for my system has been the 140s and 200C but the A 52 is right there as well. I was somewhat concerned that there would be little or no improvement in SQ between the two amps but I found that not to be true.
I would highly recommend the Halo line of amps for someone looking for an amp in the moderate price range. The look of the A 52 is a plus and it has very good build quality as well. I would like to thank Matt once again for his very knowledgable advice and help I very much appreciate it. (my apologies for the long post!