FourT6and2
Well-known member
After digging deeper I did find this about the Strymon: "Five (5) individual custom transformers (one per channel) deliver clean, consistent power."
JamesPeters
New member
Glad to help with my 2c! 
I'd say if their information says it completely eliminates ground loop issues, especially from a reputable company, it's a safe bet it'll do the job. One hint it'll be good is that it has a mains power cable input, instead of an input from a "wall wart" adapter. Since the AC from the wall goes right into those units, it has to have a step down transformer inside at least. That's a big part of the battle. From there you want isolation between the outputs, but it's not as critical. A single multi-tap transformer will work for both jobs, so it doesn't necessarily require a bunch of separate transformers.
If the device on the other hand has a "wall wart" power input, and it uses a smallish adapter at that, it's most likely a switching power supply adapter (which brings it back to the point I'd made earlier about problems with switching adapters). So even though the unit may provide regulation and some degree of isolation from output to output, the (ground loop) battle can be lost right at the power input to the unit.
The unit I bought was this:
https://www.moskyaudio.com/product/products-6-13.html
(Mosky C8 Power Station)
After seeing a picture of the insides, I had a good idea what it was. The cost was $65 shipped so I figured I'd give it a shot. I also had a cheaper unit which only used regulators to "isolate" the outputs and that didn't do a thing for the ground loop issue. But the C8 works great for that. (I wanted to test both kinds. The cheaper kind will get use around here, but just not for anything with potential ground loops.)
Lately I've been spending a bunch of time trying OD pedals. I call it my midlife crisis. It's helped me rethink a bit about a couple amp designs (how they interact with pedals), but it's also been fun. There are so many nice sounding OD pedals nowadays. Eventually I needed a power supply for them. Next: a pedalboard. What have I become! 
I'd say if their information says it completely eliminates ground loop issues, especially from a reputable company, it's a safe bet it'll do the job. One hint it'll be good is that it has a mains power cable input, instead of an input from a "wall wart" adapter. Since the AC from the wall goes right into those units, it has to have a step down transformer inside at least. That's a big part of the battle. From there you want isolation between the outputs, but it's not as critical. A single multi-tap transformer will work for both jobs, so it doesn't necessarily require a bunch of separate transformers.
If the device on the other hand has a "wall wart" power input, and it uses a smallish adapter at that, it's most likely a switching power supply adapter (which brings it back to the point I'd made earlier about problems with switching adapters). So even though the unit may provide regulation and some degree of isolation from output to output, the (ground loop) battle can be lost right at the power input to the unit.
The unit I bought was this:
https://www.moskyaudio.com/product/products-6-13.html
(Mosky C8 Power Station)
After seeing a picture of the insides, I had a good idea what it was. The cost was $65 shipped so I figured I'd give it a shot. I also had a cheaper unit which only used regulators to "isolate" the outputs and that didn't do a thing for the ground loop issue. But the C8 works great for that. (I wanted to test both kinds. The cheaper kind will get use around here, but just not for anything with potential ground loops.)
Lately I've been spending a bunch of time trying OD pedals. I call it my midlife crisis.
It's helped me rethink a bit about a couple amp designs (how they interact with pedals), but it's also been fun. There are so many nice sounding OD pedals nowadays. Eventually I needed a power supply for them. Next: a pedalboard. What have I become!
FourT6and2
Well-known member
Thanks man!
B
Beandust
Well-known member
Can you post a link on one of these UPS with ARV you mentioned? Thanksstratjacket":3cf43u6t said:
FourT6and2
Well-known member
Beandust":27igkzux said:
They're just big batteries. They're for computers in case you have a power outage so you don't lose unsaved data. Kinda pointless for a guitar amp. Their voltage regulation is worse than a Furman unit.
B
Beandust
Well-known member
Thanks! Thought maybe I was missin out on something to help with the hum and buzz. Did the blind test with no cables, loop switches off. Definitely no buzz. Gain at noon, a flickering hiss was about all I could hear. So I need to clean the signal someplace. H9 in loop and a boost in front is it , wouldn't think that would bring hum/buzz. Cable perhaps. Using all monster and pig hog. And there's the voodoo iso 2 I believe it is.. must be the culprit. ThanksFourT6and2":1uzdetqr said:
stratjacket
Well-known member
FourT6and2":3hdsg1s6 said:
Yeah, they are just the ones you'd get at Best Buy or Amazing, entry level voltage regulation. Better than the standard $90 Furman Power Conditioner that has no AVR but certainly not as feature rich as the $800 power conditioner listed above.
Basically they are better than simple surge protectors and nothing at all and can help in isolating your gear from power fluctuations in your house.
FourT6and2
Well-known member
Strymon Zuma R300 showed up. And hell yes it solved a lot of the noise issues. The loud hum is gone! Still a bit of radio station coming through, but I don't think it's the power as it does it with a battery-powered pedal, so it must just be the design of the loop in this amp. In my other amps, there's no radio. Maybe the Furman units will help further because then the amp will be on an isolated and filtered supply. They'll be here later this week.