Again the topic of weight of amps

Hello roxy1927,

     You’re a perfect candidate for class D. Here’s an excellent pair of D-Sonic M3a-600-M mono-blocks for $2,150/pair, 800 watts at 8 ohms, 1,350 at 4 ohms,brand new, 3 year warranty, rca and xlr inputs,a 30-day free in-home trial period and 10 pounds each. Check out the specs, I think you’ll be surprised.

https://www.d-sonic.com/products/m3a-600m-mono-amplifier-per-channel.html

     I’ve been using the earlier model of these, the M3-600-M monos for about the last 4 years on a pair of Magnepan 2.7QRs and they sound very similar to my previous 85 pound Aragon class AB stereo amp but with better bass, a quieter background, more detail, better dynamics and an even smoother mid-range and treble. Mine are excellent amps and I believe these newer ones are even better. 
     They use so little juice I just leave them on 24/7. Of course, they’re not going to sound as good as your Pass 350.8 but they both combined weigh about 110 pounds less and they run much cooler. You may want to read some

Tim

Roxy, what you want is the Schiit Vidar x 2. An amp that is 22 lbs and does 400 watts in mono block mode.

Only caveat is it needs to be connected to the pre with XLR cables for mono operation. Class a/b, made in USA, 5 yr warranty. Worth a look.  

Get a "feather-weight" 55 pounder, it will still sound better than any cheap chip amp, and will have a BOM far more commensurate with the price.

the last SS amp I owned was a Pass X250 - boxing that thing up was tough on my compressed deflated discs....my current (since 2011) Music Reference RM10 MkII weighs 15 pounds and sounds every bit as good and adds tube magic w/the right speakers....rock solid reliability and dead quiet.....I can't believe somebody hasn't bought the unit for sale here now

I have Audia flight Strumento #4 MK2 power amp it weighs over 200 pounds but sounds wonderful.I had Pass 350.8 before that it was a great amp as well weight only about 127 pounds.Your correct small amps are eiser to move but none i heard sounded as good as the heavy weights.