I started with my Jolida 1000 (80 lbs) that is known for gutsy bass and a nice midrange. It drove my inefficient transmission line speakers very nicely and delivered deep low bass. I hooked them up to the M3s Turbos and they sounded great but after a while I came to miss deep bass.
The 2A3's were punchy and have nice bass on the spatial's but with a midrange and sound staging I haven't heard before. I have been an enthusiast for almost 40 years and was dealer and heard many different systems. While SS has some strengths, they also have some draw backs. It really needs to be done right- I have heard some SS amps that had it all, but were expensive and hard to find.
That said with my sub woofer, my system sounds where I want it. The subwoofer integrates seamlessly, but I have a hunch it could sound better with newer sub/amp technology. We will see, I ordered a SVS 4000 SB with a 45 day return policy. I'll report back on how it sounds.
I'll also get the triode upgrade that should help with impedance. I'm sure the sub will still come in handy after I get them to Triode master level. If not I will use it in my other system. Thank you!!