Oh, Phooey!
The last Synergistic Research fuse arrived, and I replaced the AMR fuse in the PS Audio Power Plant. So, now both the Hurricanes and the Power Plant ALL have SRs in them. By the way, I have 3 of each: 3 SRs, 3 HiFi Supreme Tuning Fuses, and 3 AMRs. So, no room for mismatching. I don't like sloppy experiments.
Sans the WA Quantum fuse chip, the sound is unquestionably better at front-to-back depth, not to mention lyrical ability (that means, the ability to make sad music SOUND sad, and fierce music sound FIERCE and romantic music sound...well, you get the point). AND, the amps are still cold! (In fact, the PS Audio always sounds better after it's been turned on (not THAT kind of turned on, horndogs!) 3 hours , and I purposely turned EVERYthing off last night, as I saw the delivery date for the SR fuse, so that I'd have an immediate impression of the SR fuse. If it didn't knock me out on liftoff (power up the photon torpedos, Scotty!), then I could still wait 3 hours for the PS Audio to warm up. But it didn't take more than a few measures to hear, on Peer Gynt (not a good CD, either: a bit etched on brass and strings), the "etch" but more clearly "etched" - meaning, minus the distortion around the instruments - in space. In other words, the actual space around instruments is more easily heard and there is a bit more of a 3D sound to the instruments themselves, with more power in the midbass-to-lower midrange frequencies, consequently more "thrust" to powerful passages. In less wordy terms, the distortion in the soundstage is lower and therefore, cleaner. Less distortion = more music.
Then I put on the WA Quantum fuse chip. Nope, it didn't change the sound dramatically - but it did sound better (and the system's still ice cold and I turned EVERYTHING off when I pulled the fuseholder out of the Power Plant to put the WA Quantum fuse chip on the SR fuse, so it's not as though SOME of the system could have warmed up to make me imagine it sounded better. I left it off for 5 minutes before powering it on, because it had only been on for 5 minutes when I put the SR in the first time).
I'll give the AMRs more time to break in, but I'd have to say, despite my not being a Synergistic Research fan (just can't cotton to the pricing on the super-priced cables, but then neither can I stand anyone else who makes $20K interconnects: the markup is exTREME on those things, and I've been in the business for a while. Maybe the R&D involved, but c'mon...), the fuses deliver.
And I'm not pushing them, but really, how come they're the only ones with a 30-day guarantee on them? Confidence breeds assurance. They really ARE as good as they say.