Power amp for Modwright LS100

I had the LS 100 ---Parasound halo A21 amp---Theos Speakers n KimberKable silverstreak IC---12TC speaker cable---sounded good 2 me----Plus using the LR controls on back of A21 were much better sounding then using the useless balance control on the LS100........  Good Luck.

Check out Reno HI FI for pass Demo or used you will get a good Price.

I’ve been running a Pass x250.8 with great results. I’ve also tried the Black Treasure CV181’s ( 2 different pairs) in my LS-100 and have nothing but noise after a couple months use. Now have a set of Psvane CV181’s running which are almost as good as the Black Treasures, but are starting to get a little noisy after just a few months. I’ve gone through the old rectifier tube that was in when I got it in May of last year, plus a new one I replaced the old one with. This also blew the Synergistic Red fuse I was running in it. I’m done playing with tubes. Just the other day I bought an Ayre K-1xe to replace the Modwright. It arrives Thursday.
Good luck in your quest.

I have a Pass X250 with my ModWright LS36.5. My experience with a big SS amps with a tube preamp it's best to run balanced cables. My previous ModWright SWL 9.0SE was a little noisy too which is why I sold it and got the LS36.5. Your formerr LS100 has an XLR out, but it's just a cheater - not balanced.  Pass X250.8 with the Ayre K1XE should be very nice. Run balance cables if not.

I've had my LS100 for about 2 years and haven't experienced any noise with the Black Treasure CV181s, nor any fuse blowing with NOS 5AR4 Phillips rectifier