Carver sonic holography

My wife was at a thrift store and found a Carver CT-seven preamp (she said she could tell it was good because it had handles :)in perfect condition for $20 dollars(I've never thought much of Carver equipment, even when i sold it 15 years ago) - I hooked it into my system (musical fidelity studio t amp, mac mini with behringer DAC) and all I can say is WOW! I'm not one usually for gimmics but when the sonic holography is on the sound stage is as wide as the room (20ft) and instruments are razor sharp in placement(I'm a big sound stage guy) what gives? - I've tried it with mg12's,AR m5's, Vandersteen 2ces and a pair of cheap Polk monitor 40's -the sound stage on all these speakers improves dramatically and I really dig the sound i'm hearing(on most songs) - has anyone else had this experience with the sonic holography?