2. amps-preamps
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Parasound a21 upgrades

Bought a lightly used 2 year old Parasound A21 some days ago. It has exceeded my expectations for sure. Right up my alley warm mids and non aggressive highs but also dynamic and tight with lots of headroom. 
Are there any mods that are reasonable to do to these amps? Fuses etc. Can the bias be safely increased to add more class a watts? 
Also have there been any changes over the years? So is a 2 year old A21 the same as a 15 year old one? 

Thanks
mofojo

Showing 1 response by auxinput

auxinput
2,920 posts
 
I was in the same boat.  I had both A21 and several JC1.  The A21 has 5 fuses that affect sound quality (1 on back panel and 4 internal).  I could never get the amp to sound good regardless of what fuse I tried because it deviated too much.  You could try Audiomagic Super Fuse (which is almost a better version of stock).

A power cord upgrade is good.  Other than that, you are better off switching to a different amp like others have suggested.
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