Well, I've had the PADIS fuses in my Marantz SACD player now for two days and they're staying put. I experienced the same thing with them as with the HiFi Tuning fuses: tried them one way and ended up reversing them for better sound.
They exhibited the same tendency as the HiFi fuses when in the wrong direction: recessed highs, a soundstage with the speakers as the limit line, lack of air and extension up high, etc. They bettered the HiFi fuses though in sounding better when in the wrong way but once I reversed them, I got similar results as with the HiFi fuses in the way of improvements.
What the PADIS has over the HiFi fuses is better control of the lows, wonderful vocals, masses strings, acoustic and electric guitars, and anything with tone. The HiFi fuses have what I'd describe as a bright or heightened leading edge on everything that wasn't apparent until I put in the PADIS fuses. Both are actually fine with me since if I never touched the HiFi fuses, I'd be still happy with them. They are engaging.
Another way to put it is to say that the HiFi fuses have a more digital rendering while the PADIS sound more analogue (when I first heard them the image of a phonograph came to mind). As for the OP's question on how they'd perform in an amp, I can't say right now as I'm letting them break in until I hear no more improvement and then I'll try a PADIS and a SR20 fuse in my integrated.
For about $23 apiece, there's no real downside to this folks. They arrived from Germany in 4 days and they are a bargain for those who don't want to shell out what SR fuses are going for.
All the best,
Nonoise
