I would agree that they are not much difference between the A-S2100 and A-S3000 sound wise but the A-S3200 uses better high quality caps than these older amps use and better caps = better sound..
The Reviewer from Low Beats said the A-S3200 is "worth every penny" and I believe he is saying the A-S3200 is a Bargain for the money..
The Reviewer from Low Beats said the A-S3200 is "worth every penny" and I believe he is saying the A-S3200 is a Bargain for the money..