Micro BR - Important Power Supplies Note

Hey Alistair,

thanks for posting this information, I'll stick this topic up!


Best wishes,

Artemiy.

Ah, thankyou Artemio!

-Alistair Clark - Roland UK

hello! I got a psa 120T and i use it for my ME-50(guitar multiple effects),can i use this power supplie for my MICRO BR?

cuerdas y sonidos en mi cabeza

I have the same question as nelksound.

The PSA-120T provides 9.6V output, and the PSA-120 provides just 9V.

I assume that the PSA-120T is okay to use, since the PSA-120 isn't even available any longer, but it would be nice to get some confirmation.

Best regards,
Eric

Thanks Alistairc,
That info can save someone a lot of problems. I purchased the power supply suggested by the manufacturer when i ordered the Micro BR. Those digital recorders are extremely sensitive to irregular voltage and even a small amount over and above the recommended limit can make toast out of it. Even static electricity should be avoided when handling the Micro BR. Just one of the perks of technology I guess. j

Just Play It

All part of the service!

Just to clarify, any PSA-120 (US) and PSA-240 (UK) adaptor will work with the Micro-BR, if it has a T on the end or not!

-Alistair Clark - Roland UK

hello!:
I'm afraid we can't use the PSA 120T to powered the MICRO BR

cuerdas y sonidos en mi cabeza

Hi nelksound... how do you mean you can't use it?
The Boss PSA-120T is definitely the adaptor to use with it in the US?

-Alistair Clark - Roland UK

Hello! Alistairc:
i called to the roland latin america expert and i asked about the right suplplie to powered the micro br and he told me every PSA supplie is good just make sure on this conditions out put=9.v an 140mA and the PSA 120T is 9.6V and 200mAo that's why i think i can not use it .
And now i really confuse maybe you can give me a better advice i don't want to get damage in the micro br.
i hope you understand

cuerdas y sonidos en mi cabeza

Ah ok I see, well we officially list the PSA-120T as the adaptor to use in the states, and Roland US also state this on their website

(Ref: Knowledge Base ID: 104518
Product: MICRO-BR
PSU: BOSS PSA-120/T )

And we state is as the PSA-240 here in the UK, so you will be absautely fine using your PSA-120T.
The .6v voltage discrepancy is catered for, but as Jstorms rightly said, its when you start increasing ampage, and going over (or under) the 9v-9.6v threshold even slightly, they are extremely sensitive.

Hope that’s useful! :-p

-Alistair Clark - Roland UK

thank you very much!!

cuerdas y sonidos en mi cabeza

You say it's very sensitive to voltage, but it can handle a range of 9.0 to 9.6 volts. One can debate whether that's "sensitive" or not. Yes, certainly going over 9.6 volts would be a very bad idea. And anything less than 9V simply isn't going to work. And the supply has to be fairly well regulated -- at least as well as the wall wart Roland sells. And getting the polarity of the power supply reversed might also cause irreparable damage. So you are correct to point out that just because a plug fits most definitely doesn't mean that it should be used.

Further, you could use a supply capable of supplying ONE BILLION AMPERES and the unit will still only draw whatever current it needs according to the formula V= IR (Ohm's Law -- I didn't make it up, it's kinda been around for a while.). The R is a constant based on the design of the unit, and we've already said the V is between 9 and 9.6. Therefore the current I is also fixed by Ohm's Law at precisely 9/R to 9.6/R. Should your supply be LOW on current that is a definite problem, but one simply cannot be HIGH on current. The power supply cannot "force" current into the unit and burn things out.

And finally, fewer people would be blowing the units out if, like every other manufacturer of devices like this whose electronics are no less "sensitive" than these, you clearly indicated the voltage and polarity requirements on the outside of the unit.

This discussion would hardly be necessary if Roland didn't see fit to charge $20 (or more) for a $10 (or less) item.

Skydog

HI, i was just wanting to know exactly on how to save on the Micro br, like i know when you turn the power off and back on the song that was previously recorded is still there, but when i plug the usb in the computer and try to take it and put it in my computer files it doesnt show up. how can i make it so that im able to do this?

Tyler~

>>Please use the recommended adaptor, eg; PSA-240 adaptor (in the UK) and the PSA-120(T) (in the States), the Micro-BR is very sensitive to voltages and amps and must be shown love! <<

I've been using the ACR-230E which came with my Microcube. It's rated at 500mA so presumably ok for the MicroBR?