I have been an A21 owner for about 9 years now, lthough I upgraded two years ago to a Plinius SA-103. It was almost three times the cost of a good used A21 at the time and still well under your future budget. Even though the SA-103 can be switched into full time Class A mode I still find myself listening in Class AB most of the time. It was a a worthy upgrade. I had been driving the A21 for those first 7 years with an Aesthetix Calypso. Last year I updated the Calypso to the Signature level along with a good set of NOS 60’s and 70’s tubes. I feel no desire or need to update either the amp or preamp.
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
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