Boss 9v psu question

[Dr R]

Really quick question:
I have just bought a Boss TU-88 tuner/metronome/mini monitor for practising with. It runs of 9v battery or a 9v Boss psu. Annoyingly it doesn't say what the current draw is, or whether the centre is negative or positive. I have googled it, but not found any specs.

Does anyone know? I have half a dozen spare psus, hopefully one will work.

Thanks as always, Rich

[Wonks]

Boss are always centre negative. Current draw is 30mA.

https://www.boss.info/us/products/tu-88/specifications/

[ef37a]

Boss are always centre negative. Current draw is 30mA.

https://www.boss.info/us/products/tu-88/specifications/

"I love it when a plan...."

Nice one Wonks.

Dave.

[Sam Spoons]

Did this work on the same principle as, when needing to know the time during the early hours, sticking a drum out of the window and banging it with enthusiasm? Somebody is bound to shout "who the hell is banging a (insert choice of expletive here) drum at 2 o'clock in the morning?

I'll get me coat