Quantum Science Audio Thread

Hello MC
I received a group email from Mike on 9-2-21. He said that is how he will let everyone know when QSA fuses might be shipped. Mike said QSA is not that reliable on shipping.
‘Have not received anymore group emails since.
Didn’t want to bother Mike since  he said he would send email.
was just wondering are others getting their fuses since 9-2-21.
The fuses are for my mono amps so I need the other fuse to try them out.
Thanks

According to oregonpapa, our resident fuse expert and beta tester of a newly developed fuse, the QSA yellow fuse has a noticable thinness in the midrange.  His "golden eared" friend, without knowledge that he was listening to the QSA fuse, noted it also:. 

Both ways, the QSA Yellow fuse sounded dynamic, transparent, went deep in the bass, but I still can’t get around that thin (for lack of a better word) midrange.

The last time he was over, I was just breaking in the first QSA Yellow fuse in the line stage. He heard the abnormalities in the midrange too, so we swapped out the fuse with the SR Orange fuse that was previously in the line stage ... and the music came back into focus
like before.

Based on the glowing testimonies from many of the other QSA users, one concludes that their systems may not be resolving enough to highlight this sound signature or ears good enough to hear it.  In any case, if it doesn't bother it appears the other sonic advantages over the SR fuses are enough to justify the QSA purchase price anyway.  Although some strive for a "magic midrange".

cerberus79
A few months ago I purchased a used pair of speakers from another Agon member.
To my surprise all the fuses were Orange fuses. I listened to them and then to satisfy my curiosity I replaced them with ordinary buss fuses and could not hear a difference.
I did this test with a bunch of friends and neither I or them could hear a difference. Kind of just says it all doesn't it?

To those non technical thinking of purchasing these $$$ fuses. Just save your $150+ and do this instead.

A fuse:
1: two end caps
2: short piece of fuse wire connecting the two end caps through a glass tube (that’s all she wrote).

To those "non technical" members that are interested in "maybe" wasting their money, do not listen to the non-technical, listen to the technicians of this industry that design the audio products you have and listen to. AND YOU WON"T SEE THEM ON THREADS LIKE THIS AGREEING WITH WHAT SAID HERE ABOUT THE SOUND IMPROVMENT DETAILS AND AC FUSE PLACEMENT DIRECTION, EVER!!!
Just clean and tighten your fuse holder and re-new your fuse (if old) with a good quality 50cent Bussman, Littlefuse or similar.As with "many switch-on surges" they do deteriorate, bend, stretch and get crusty with electrolysis formations on their fusible wire elements before they give out, as these pics show of a fuse wire element ageing over time show. https://ibb.co/9NbTwqK (even the $$$ boutique ones will age just as much also)

Cheers George