Synergistic Red Fuse ...

Bob,how can a fuse in your battery powered preamp have any effect on sound quality if the pre is off the ac grid? Are the fuses connected in the dc circuit somehow? 

Bob ..

Glad you took the leap into the "Black" world of fuses. You're going to have to put another 30  hours on them before they really start coming alive, at which point the improvement they afford is mind boggling. Considering the price, and the fact that there's a 30 day return policy, it just seems to be a no brainer to me. 

As I mentioned somewhere else on this site, I've been in commissioned sales for over 50 years. There's a sales technic 

^^^^ There's a sales technique known as "The Puppy Dog Close." It goes like this ... Pet store owner: "Oh so you're undecided on whether you want to own this puppy? Well then ... why don't you take the puppy home for 30 days just to see if he/she would meet the needs of your family and fit in?."

Of course by the time the 30 days are up, you're so much in love with your new puppy that you wouldn't even think about returning it."  The SR 30 day trial on all of their products? A great puppy dog close. The products are so good, I don't imagine they get many returns on anything they build.  

Next up for me after three more BLACK fuses are installed into the system, is one of SR's wall sockets. Based upon what Charles says about what an upgrade this wall socket is, I just can't pass up that kind of improvement for a modest outlay of $95.00. 

Happy listening ... 

Aolmrd,,
there are 2 rail fuse holders in the main unit, not associated with the AC power charger unit, so yes, they are used in the DC circuits, and are 4amp solo blow . Started with PD Dac first, but now even better with battery powered line stage installed. Vytas, their designer thought it might help, so I did, and it does.

Frank,after  they are broken in would appreciate your help/ears to help me judge best orientation of fuse direction in my rig. Perhaps in two weeks more? Thanks..