Biyang pedal power supply brick

[bongomania]

http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT



According to the seller, the outlets are isolated! He was not able to confirm whether the two 6VAC outlets could be Y'ed for 12VAC, and I have never tried to chain AC outlets, so I don't even know for sure if it's feasible. Anyone here know if it can be done safely? The other item of interest is the ACA outlets, with 1000 mA capability... ACA is 12VDC... meaning it can almost certainly power the Markbass Compressore!

There is a dark side, of course. Allegedly Biyang stole the work of a well-known and respected DIY pedal designer, for one of their other pedals. So there's that.

Kind of a tough call--I don't want to support thieves, but at least "on paper" this seems like the best and cheapest power brick available!

[Bryan R. Tyler]

The measurements are off- it says it's 6" x 4.5" x 6" tall. The high mA DC outputs are what interest me- you could run Eventide pedals off of them.

[Happynoj]

Nice.

[Taylor Livingston]

It would appear that the ACA output is (like the Boss ACA) unregulated. I would guess, though I couldn't be sure, that the Markbass expects regulated 12v. The actual voltage may drop a few volts with the Compressore hooked up to it, which may not be good.

Again, I don't know that this is the case, but if that's one of the major things you're into with this unit, it might be good to ask Markbass if an unregulated 12v will do.

Also, I would just guess that the isolation is between the "sections" and not every output. In other words, it looks to me like outs 1+2 are coming off of the same tap/regulator, so not isolated from each other, then 3-5 have their own tap, etc. So you get some isolation, but not complete. It would probably still work out, since usually you only end up with one or maybe 2 pedals that need to be isolated to play well with others.

You may already have known all that, Bongo - I know you know your stuff. Just thought I'd throw it out there.

Looks like a cool unit. I don't support their business practices, as you mentioned, but I'm not sure Mark Hammer cares that much himself.

[bongomania]

Good point about the un/regulated issue. Re the isolation, I agree with you based on how it looks, but when I emailed the seller (who may be a nincompoop for all I know) he said all of the outlets were isolated. OTOH even if he's not dim, he was probably just repeating some vague assertion translated from Chinese.

[Darkglass]

It´s hard to believe that a commercial pedal powersupply now a days would have unregulated outlets (specially if allegedly the design was good enough to be stolen)...
I believe you should be able to connect de 2 6V outlets in series for 12V... since they almost for sure use regulators (probable 7806) and at least all the LM78XX and 79XX have overcurrent foldback .
Now, if it's a switching powersupply, I have got no idea :

[Chronicle]

Meh, I'd rather spend the extra 40$ for a Voodoo Labs ISO5...

[bongomania]

ISO 5 = 300 mA = definition of "meh".

[Smallequestrian]

Yeah, using these digital pedals, there aren't a whole lot of options. I was using a Onespot fine to power my three Source Audio pedals, but when I added the Ring Thing I ran into some noise issues. I looked into getting a "real" power supply, but the only one that can really handle what I have is the T-Rex Chameleon, but it also is one of the most expensive options out there. 100ma isolated outputs seem to be the most common option in the higher end power supplies and they just don't help me.

For now, I'm just going to have to run the Ring Thing on its own adapter...I'll probably just pick up another one spot for the convenience of two skinny plugs.

[Chronicle]

Originally Posted by bongomania

ISO 5 = 300 mA = definition of "meh".

It can run Eventide Pedals and with 3 100mA outlets you can definitely run at least 2 off each of those. And it has a Toroidal power transformer, i bet Biyang doesn't have that!

[Nic.]

I don't use this one, but I use the Biyang adaptor with 5 outputs. It's extremely silent. It works well. Supposedly the outlets are isolated, I don't know how true that is but I've only had good results with it, although that might just be because I'm using well-behaved pedals. Due to the small size and weight, I actually sold my fuel tank since I stopped using the tank.

If this one is anything like the adaptor, it's probably worth a shot. If it doesn't work out well, you could probably turn it around without losing out much.

[bongomania]

Originally Posted by Chronicle

It can run Eventide Pedals and with 3 100mA outlets you can definitely run at least 2 off each of those. And it has a Toroidal power transformer, i bet Biyang doesn't have that!

Hardly anybody uses Eventide pedals, and any common supply can power multiples of low-amperage center-neg 9VDC pedals, so there's absolutely nothing special there, and the Biyang does use a very large heavy transformer according to the seller. Whether it's toroidal he didn't say, but it would almost have to be, to fit in that chassis. Really I'm not trying to bust your chops, but it's obvious that the ISO 5 is just another of the same old, same old with inadequate current for the higher-draw pedals out there.

[Bryan R. Tyler]

Seller contacted me- he said it's just a 2" tall, so no rack mounting that one.

The Cioks power supplies seem like the best thing available if you're looking for AC outs and powerful DC outs. Too bad they don't seem to have any US dealers.
http://cioks.com/index.php?option=co...d=40&Itemid=57

[Chronicle]

Originally Posted by bongomania

Hardly anybody uses Eventide pedals, and any common supply can power multiples of low-amperage center-neg 9VDC pedals, so there's absolutely nothing special there, and the Biyang does use a very large heavy transformer according to the seller. Whether it's toroidal he didn't say, but it would almost have to be, to fit in that chassis. Really I'm not trying to bust your chops, but it's obvious that the ISO 5 is just another of the same old, same old with inadequate current for the higher-draw pedals out there.

No one uses eventide?!? You sir have not been around HC

[carbonfold]

Wonder if anyone was able to chain the two 6v together.... hmm...

[scubaduba]

So who has one of these? Thumbs up or down?