Rega Brio weird sound

Cornwall 4

If the hiss is constant (doesn’t go up or down when adjusting volume) then it’s noise from the amp.

The Brio has 40 db of gain, not a good mix with Cornwalls, I think. The Cornwalls really deserve a better amp. I would not put the Brio on my Heresys. They really need a quality, quiet, smooth amp.

You might be able to put an attenuator between your source and the amp, might help. I always keep some attenuators in my tool kit. 

Too many modern digital recordings have a hot tipped-up treble. My CD of Master of Puppets. was unpleasant in the highs! I compared it to the LP. No contest! The MoP LP was way better! Find better sounding recordings! Anyway, I am familiar with the Cornwall and find them excessively bright with their EV metal horn tweeters. That's why I sold my Heresy's - same EV tweeters and midranges.

I had an Hegel before that sounded really good. Clean and neutral but the extreme damping factor of the Hegel amp made the bass disappear at low to medium volume. The Brio is just a tempoary solution saving up for a better amp. But I must say Im really disappointed with its sound after reading all the hype in the audio press. 

I am familiar with the Cornwall and find them excessively bright with their EV metal horn tweeters

The new Cornwall is nothing like older Klipsch design. It has a smooth top end. Ny older Chorus II would cut my ear of at high level. Intense bright and shrill.

Rega should stick to making turntables....