ARC VT100MK2 substitute

I also had an LS-15 and a VT-100 Mk II.
I replaced the pair with a PrimaLuna Dialogue Premium Integrated.  MUCH easier to live with.  Zero regrets!!

I too believe that the problem is not with the AR amp, but with the tweeters in the Focal Speakers.

Before doing something that you may regret, try other amps that are in the similar price point of your existing amp (unless you can afford better).  Listen and determine if that makes the difference you want.  Don't buy until you are sure.  Buying without listening in your system and regretting afterwards really sucks.

I have a hard time believing that the AR amp sounds bright.  Most that I have heard are on the softer side. 

But, some speakers will drive me out of the room.

try to listen in your system first.

enjoy

I think the OP is really tired of the retubing and he wants a new amp that won't sound bright with his other components.

If he likes the tube sound with much less hassle than a VT 100 Mk II, I repeat my recommendation of the PrimaLuna gear.

If he likes the tube sound with much less hassle than a VT 100 Mk II, I repeat my recommendation of the PrimaLuna gear.