I've heard the Jolida expander at shows and enjoyed what it does in the analog domain without causing damage. At a much higher price point the Manley Massive Passive can make your system sound pretty much however you want it across four parallel bands. There is a bit of a learning curve, and as Manley says in its manual, as much art as science.
Tube Sound With Equalization?
I currently have and Benchmark preamp and amp playing into full range drivers. The sound is very neutral as expected, but recently I was able to demo a Mac MA352 Hybrid Integrated amp with a tube pre and solid state amp. I found the sound to have more decay, especially in the mids, and more pronounced with stringed instruments. I was wondering if an equalizer would be able to recapture some of those qualities, and what would the settings be?