"Originally Posted by terraamb01 View Post
Actually a mastering engineer that Im friendly with... said, was "just so you know, the 500 series use low voltage rather than high voltage,...
And
With the lunch box I think it's more that it is sort of a *cheap* power supply.
You fortunately don't admit who the mastering engineer is, but he is 100% WRONG in the voltage statement with regards to API (we don't know about other manufacturers) - and nevefreak is also 100% WRONG with respect to the lunchbox power supply. Where do you 'authorities' get this kind of information??
The problem with this forum and the internet as a whole is that 'authority' and 'expert opinion' are neither accurate nor verifiable, yet taken as fact to the detriment of pro audio as a whole.
Very few people seem to take the time to actually ask the manufacturer these kinds of question"
https://www.gearslutz.com/board/so-much ... eamps.html
Funny thing, doesn't most gear have a 120v/230v power switch? 120v for U.S. and 230v for Europe?
I'm surprised there's not any comments, maybe there is??

, of someone in the U.S. who uses 240v instead of 120v because it sounds better.
The bottom line is that API publishes a spec for the 500 series, and if a mfg. is unable to design a 500 series unit that doesn't sound the same, they will say as much and if there is a difference. Then again, someone can always A/B them with test equipment!
Or, you can stick with the API modules, because you know they are the same as in their consoles.
http://umlsrt.com/wp-content/uploads/St ... NEQ_EQ.pdf
115V/230V Operation
Before adjusting the operating voltage, always switch off the unit and remove
the AC power cable!
To adjust the operating voltage, use a flat blade screwdriver to click the voltage
selector across to the required position until the legend 115V or 230V appears in
the window and fit the appropriate fuse supplied in the fixings pack.
"... Rupert's TLA (transformer-
like-amplifier) principle which emulates the
useful operating characteristics of a transformer."
Though not a transformer.
Neve wrote an overview in the above link. It gives perspective on a famous designers comments concerning class A and transformers versus his newer stuff with ic's and tla's.