Solidstate substitute for Bat Vk75se?

Not sure how you're hooking up, but my X150 definitely sounds better with balanced interconnects in my setup. Just something to consider.

Have you tried BAT's vk500?

Mrowlands reminded me, I too found a decided improvement using the Pass amp balanced. From what I understand, the Pass X series don't fully utilize their super symmetry circuitry unbalanced. I'm using the Aleph P which I found an improvement over a Sonic Frontiers Line 1 tube pre I was using. My Pass duo is hooked up to Apogee Duetta Signatures (full range ribbon). A humble Jolida JD 100 tube outstage cd player, and a venerable AR turntable are affordable wonders as front ends.

We had a cd player party at my place recently, and everyone could clearly hear all the differences between the players. The Pass will passively pass on whatever you prefer in sound.(geesh)

Add the new JC-1 by Parasound to your list of things to listen to....Specs are very good at 400w/130a current/damping >1,000/122dB S/N/50K input impedance....Big monos....If you don't like the sound then I am the guy to blame as they hired me to choose the parts and voice the units....Parasound hired CTC to design the new amp and I'm pleased with the unit....This is not your father's Parasound.....Try a set as being shipped to dealers this week....

If you're looking for solid state the Spectral amps should
be on your short list.

The small DMA-80-100 amps are an excellent value.