Oh my yes. In 90 minutes only...I can hear this all going in the right direction. Will return in a few days/hours.

My goodness Lon, you're not kidding. I'm a morning person...so I could not wait to be up with my morning Joe in hand......
Mark sent me the HP Copper Sluggo.

I don't know where to start? Theirs a wholeness with richness revealing obscured details with that richness.

It took ... even more real .....up. The reason I listen with a Class A/A1 Amp/even order harmonics/no negative feedback... in the first place.

I run my ZMA direct from ZDSD. Clearly, it's filling those big red Mallory caps with unadulterated power. Bye, bye thin wire fuse forever!

Now, back to goosebumps and Cheshire Cat grin on my face.

Stone,

I am glad you are enjoying the SDFB with your Mystery amp. It really made a profound difference in my system. Kind of like installing a turbo charger on your cars engine.

I observed many of the SQ attributes you noted and a lower noise floor to boot. Much like potato chips, I bet you can't do with just one. Enjoy.

HK

HK, yes, lower noise floor too/for sure. Now, I will investigate my ZDSD. It does not have the outboard fuse with the IEC.

Lon, good idea, I will mark one side/Sharpie dot, so when I pop the bugger out I know left vs right. Thanks for the tip. I will reverse the Sluggo at 60-70 hours.

Now, time to catch up on the Snubway thread with you guys.

Lon, my sluggo’s all have the word sluggo engraved on them. I use this for left and right and top to bottom directions. Not sure if yours have the engraving. It is really hard to see on some.

Got up early and listening. As my retired brother and I say.....we have such a pressing schedule; the horror of it.

It does just continue to get better. As Mark said I believe in the Snubway thread .....(to heck with quotes and quotation-I just free write).

I paraphrase:  Our Product(s) bring out the best in your System without taking away from what you created.

Lon, I will continue my progression with other Sluggo's/reading your impressions. When I hit 60 hrs I will reverse my HP Copper Sluggo. Continue from there......

The other Lon....I will look closer too for the engravement.

PS: If you did not know or do..... assembled, quality control & tested in Peter Madnick's facility in California (SDFB).

Peace of mind.....I ran AAlchemy DTI Pro-32 & 3.0 Decoding Engine for 21 years (1994 till 2015) without fail. (Steve's output stage/ZDSD Feb, 2015.... direct to ZMA.....bested these......sold AA).
Point being - great quality control Steve D./Decware & Mark S. & Peter M.

With gain adjustment between components I no longer had audible hum anywhere near the listening spot with a fuse or with the Fuse Box with my SEWE300B.  When I had new output tubes (Sophia Electric and then Wathen) I did have some hum but as the tubes seasoned the hum basically went away.

I am pretty certain that the Fuse Box itself will not influence the hum.

I was running for a spell all Wathen tubes in the SEWE300B with the exception of the regulation tubes (I have decided that I love the sound that 75C1 give the amp and will always use those). I liked the sound but in my listening room I found myself getting fatigued with them in place, even after a long burn-in. So I moved those tubes to my living-room system and only kept the 300B-WC in place. But the Wathen tubes are great in my larger living room audio/visual system. Still when the Wathen tubes were new there was a little hum that went away as the tubes seasoned.

So. . . perhaps more time will solve the problem? If not, are your interconnects shielded? If not, I find shielded interconnects to be a quieting factor.

I don't understand 300B amplifier hum, it seems that there may be a tiny bit of hum due to the nature of the tubes and circuitry. But you really shouldn't hear it with the music at low volume. I hope others can add more information.

75C1 are an 0C2 tube, but different structure.

0C2



75C1


Most 75C1 seem to be made in England, some in Germany. I find the English to be better sounding in my system, and use them in all three regulation tube spots.

I found that the Sophia Electric and Cryotone 300B tubes that I used took 200 to 300 hours before they settled in and there was a louder hum from them until those hours were on them--then they were pretty darned quiet.

With my SEWE300B in my system I get the best sound and the least hum by lowering the gain on the amp to about half and having the ZBIT about 80 or 90 percent. The ZROCK2 can also provide some hum in my system, but not bad, I have it set pretty high to get the treble reduction.

I hope that the noise can be reduced!

Lon's suggestions really helped, we adjusted the volume / gain control on the amp, the zibit and the zrock II a bit and that really helped.

Now we have a very slight hum that is only noticeable if the music is off and we're standing right next to the speakers.

Thank You!

I just now installed a hollow silver 5x20 from China in my PS Audio P5, which feeds my amp and CSP3. I have been using a fatter solid silver slug from Golden State in that position.

First impressions, the sound was a little disjointed, edgy in some areas, and smooth and pretty sweet in others. But within several tunes, still some noticeable edge I expect to smooth out and get more complex, but it has already come together with a sound I prefer for the most part.

With almost no burnin, overall it sounds nicely resolving, a little faster, and smooth, and will no doubt improve in these areas. Hard to say exactly what time will do to the tonal balances, but the initial result is like I was hoping it might be, with more good metal than a fuse, and less than my big solid silver slug... more open and cleaner than the golden state silver, less thick, but still with warmish body (with this tube set and setup anyway). And with less thickness, more speed and space, supporting a cleaner tighter bass that is more resolved and complex, along with better inner detail, decays, textures throughout.... and for being new, pretty natural sounding. Looking forward to what a few days of heavy play will do!

Excited.

After this settles in more I will try the platinum/rhodium hollow I have now in the 300B/845 amp.

No doubt system dependent, and do I have a lot of Miflex copper/oil caps around with their harmonically complex warmth, but this seems to be a good tuning tool for me with all the other slugs and sluggos I have in place.

Yes, thanks to you Lon for bringing the hollow fuse replacements to our/my attention. I am glad they act more-or-less as I suspected they might, and guessing they are likely to become a best friend in this already smooth and warmish leaning system.

Also really glad those tubes work for you... I imagined/hoped they might, but never know considering such a highly tuned system as yours! They should continue to improve, by reports needing a long time to fully come out.

Will, I was looking for your source for hollow fuse replacements and could not find it. You mentioned Ali Express, but also a second source.  That is the one I am searching.  Thanks.

Good info.  Anyone try the Rhodium plated silver versions?  Hollow or solid? I am using Golden State solid silver now.  Thanks

Will, thanks for the response and info.  I am interested in the Ali-Express Rhodium plated silver hollow or solid.  The Super Duper Sluggo has a Super Duper price I cannot justify.  Bought the SDFB to get past the weekly audiophile fuse update with price creep. These Sluggos are starting to head down that path. Uggggh! I do like the solid silver best in my set up.

Yes, that was my first and I think it's perhaps the most effective.

Mark --

That is awesome news! Looking forward to trying them out!

Yay Super Piggies! My new super-rectifier should arrive any day, so I'm glad to hear the new pigs are on their way as well.

And Yay Graphene Sluggos while we're at it! Can't wait to those out!

IT'S ALL COMING TOGETHER!

I'll do the Graphene's. Then, backfill. I probably should do the hollow silver Sluggo's before Graphene? First, need to reverse HP Copper Sluggo in some more hours.

Mark --

I posted a photo of the first (demo/proto?) Super Piggy you sent me a few months back. Here it is again, now that you're starting to have them in stock for future sales.