I was pretty surprised by the difference the Orange SR fuse made in my 818, so always spec these now (I had tried SR's previous fuses in the 818, but couldn't hear a difference). I ordered my Farad with the fuse and AC upgrades as I know how good the fuses are, but don't know what it would have sounded like without.

One downside of these fuses is that around 10% of the ones I've bought failed as soon as they were plugged in and ordering them at the same time should eliminate this issue (as well as having to dismantle the PSU to insert it).

Prolific music listener / Hi-Fi addict!