Hello professorsvsu,
I own a Parasound Halo A-21 amplifier and I was going through an upgrade consideration, although for different reason, few months back. You can see this post going to my profile where you would get details about a list of Class A amplifiers that I shortlisted for the upgrade. I am using this amplifier for about 4 years and I didn’t experience any such issue (not revealing details consistently) with it.
However I have noticed that if you remove the top hood of this amplifier it sounds much open, airy, more detailed and it runs a lot cooler too. I have cut a ply to the size of its hood and use that as a flexi-top-cover when I don’t listen to music. This is something you can try, doesn’t cost money, and see if you like the sound.
I had replaced the 5 stock fuses that came with the amplifier and it also opened up the sound significantly. However the fuse upgrade was tricky because most of the details provided by aftermarket fuses came at the cost of making the sound bright. I had to change these fuses a couple of times to get a sound that was something I could live with. So I wouldn’t recommend this trick to anybody who like me doesn’t enjoy experimenting with audio tweaks.
Hope this helps...
Indranil
I own a Parasound Halo A-21 amplifier and I was going through an upgrade consideration, although for different reason, few months back. You can see this post going to my profile where you would get details about a list of Class A amplifiers that I shortlisted for the upgrade. I am using this amplifier for about 4 years and I didn’t experience any such issue (not revealing details consistently) with it.
However I have noticed that if you remove the top hood of this amplifier it sounds much open, airy, more detailed and it runs a lot cooler too. I have cut a ply to the size of its hood and use that as a flexi-top-cover when I don’t listen to music. This is something you can try, doesn’t cost money, and see if you like the sound.
I had replaced the 5 stock fuses that came with the amplifier and it also opened up the sound significantly. However the fuse upgrade was tricky because most of the details provided by aftermarket fuses came at the cost of making the sound bright. I had to change these fuses a couple of times to get a sound that was something I could live with. So I wouldn’t recommend this trick to anybody who like me doesn’t enjoy experimenting with audio tweaks.
Hope this helps...
Indranil