You don’t see a lot of companies promoting sound processing technology at hi-fi shows, because audiophiles generally hate sound processing — they like it clean and pure. The Qol sound processor from BSG Technologies seemed to be winning them over at RMAF, though. According to a company rep (and my ears) it dramatically expands the stereo soundstage without diminishing the center image and without affecting frequency response. I’ve never heard a soundstage expansion circuit this clean, and I’ve pretty much heard them all. Typically, the Qol processor connects between an amp and preamp. If you can’t scrounge up $3,999 for the processor, don’t worry—the company is looking into licensing the technology into more mainstream products.
