A21 is definately better. I've listened to them both extensively. The A23 is good, but the A21 is quite a bit better. Clean, low level detail, improoved bass control, higher damping factor, ect. Higher class A bias. It's worth the upgrade.
Differences between Parasound A23 and A21?
I understand the basics from their website, but it does not say if the A21 uses any higher quality parts other then the case work and possibly in the larger power supply. I emailed Parasound a while back and did not get a clear answer other than "it is closer to the JC1's then the A23." It appears from their specs that it is just an A23 with double the power, but I have not been able to verify this either way. If anyone has a clear answer I would appreciate your experience. Or if you have had a chance to compare the two amps with the same speakers I would also appreciate any feedback you may have.
Thanks,
David
Thanks,
David