Replacement fuse for McCormack DNA 225 and RLD-1


Hi There,

Does any one out there has info handy on fuses (specs and how many) for McCormack DNA-225 Amp and RLD-1 Pre?

Also, have you tried hi-fi and/or furutech replacement fuses with McCormack RevA / Gold upgrades and would you recommend incurring the expense?

I think DNA225 has 1 main external and 5-6 internal fuses, so @Furutech prices it will add up to about $300!

Thanks!
paul2k7
I got fuse spec and preferential order of replacement info, from the qualified source. Here it is:

"I would change the remaining fuses in this order.

RLD-1 mains fuse X 1 - Furutech Slow-Blo (use a 315ma - 400ma)

DNA-225 power supply fuses X 2 Furutech Slow Blo 1.5A

DNA-225 rail fuses X 4 HiFi Tuning Fuses 10A Fast Blo"
Hello Paul,

I used to work at Virtual Dynamics, and thought I might actually be able to help you out. I have the McCormack DNA 225 Platinum plus (stealth caps, transformer+, carbon transformer base) upgrade. Wonderful sounding amp, and it first came with the HiFi fuses, as they accidently shipped it before receiving the Furutechs. Rick is a big fan of magnets, and on his Luminance amp replaced his fuses with them, so I likewise did with my McCormack (which is why the amp ended up at SMC in the first place!). I say this to say that the improvement that the magnets made, partially as a solid conductor would make a good improvement, the Furutech fuse made just as much. I highly encourage this upgrade, and it is safe!
Nvanderstoep, let me confirm if I got you right - you are suggesting "to use 'magnets' instead of a 'furutech fuse', as they have comparable performance"?? If so, what about protection (provided by fuse)? Wouldn't a magnet negate the purpose of putting a fuse in the circuit??
A friend of mine uses magnets in his equipment and ,yes , there is no protection when you do so. A tweak too far for me but I have read on other forums that it has its advocates.
No, use the furutech fuse instead of magnets. As good as magnets are, there is no protection, and you get all the same sound with the furutech. Sorry for the late reply