I've got a Roland R-70 drum machine that came with a generic PS, when
I got it the thing didn't seem to work, so it went back to Roland for
a checkout and they fixed some things and said they tested it and it
was working fine.

I didn't bother sending them the generic PS, I figured they had one.

Only when I got it back it acted just the same.

The symptoms are a distortion in the audio, whether through the
outputs or headphones and the overall output seems to be weak.

In true Roland fashion, there are NO SPECS on the case, just "Use a
Boss
ACI-120 Power Supply".

When I got the unit fixed, I also got a manual for it...guess what, no
specs there either, only "use a Boss ACI-120 Power Supply".

So my questions are twofold:

1. What are the specs on this thing....volts/amps, etc.? One thing I
noticed is that it is used to power some fairly powerful things (like
a full sized keyboard) so I take it puts out more juice than your
garden variety wall-wart.

This would make sense given the problems I am having.

2. Anybody have an R-70? Do you HAVE to have this adaptor? Are there
other Roland adaptors that will work?

It seems the ACI-120 is in plentiful supply, but they are expensive,
$50 friggin dollars for a wall wart....but it might be that it's a
very high output wallwart. If I at least had the output specs that
would be a great help.

Thanks,

Analogeezer