Mono Blocks / why are they not more prevalent? + Wyrded4Sound SX1000R

Mono blocks sound better than non mono blocks. They just do. They generate a much wider, in depth soundstage. Once you hear it, it's hard to go back. Sort of like hearing a great tube amp compared to solid state. Tubes just sound better than solid state.

The least expensive way to get into a mono block type configuration is to look for an old Harman Kardon Twin Powered Receiver. They have a power transformer for each channel that is basically a mono block design in one box.

I use bespoke tube mono blocks in the main rig, NAT Audio Magma M HPS. When listening to the Harmon Kardon 930 Twin Powered receiver in my vintage rig I am very impressed with what that little receiver does with the sound! 

I'll be comparing a Sansui 1000A tube receiver to the Harmon Kardon 930 soon and will discuss the findings. 

Twice the speaker cables and interconnects. 

@mitch2  it depends on the power supply and transformer size. I have a Krell ksa 300s that has a 5kva dual domain transformer, I assure you it outperforms many monoblock amplifiers.

@invalid - I am a huge fan of overbuilt and quiet power supplies, and I am sure the Krell is a great sounding amp.  My comments are not about whether there are great sounding stereo amplifiers that are better than some monoblock amplifiers, as I know there are, but rather that, all other things being equal, there are advantages to having amplifiers in separate enclosures for each channel, rather than having two channels in one enclosure.

Thank you everybody,