I just found an electro harmonix delay in a skip!

[PhilKing]

I've got an old Little Big Muff from the 70's too.

Does anyone know what sort of power input these are? Like, voltage and polarity?

Hi Johnny, I believe they are all 9v dc.  As for polarity,  can you look at the battery connection and work it out from that (or let gwEm look at it  :) )

[roland_rat]

I have got one at home that does not see much action these days.  If I remember right it had a two pin plug on mine which plugs into a transformer.  Very nice analog delay. I only stoppped using mine  has the transformer has a annoying hum. Guess I really should get another transformer to plug into.  I will have a look when I get home just what voltage it uses.

Anyway I hope you get yours working.

[Johnny Mac]

I had a look inside it last week when I found it. It has no battery inside, just a small jack plug socket which is the same as my little big muff. The LBM has a battery so I could work it out from that. Good idea Phil, thanks.  :D

[roland_rat]

I checked this morning and mine has a cable connected in the left hand corner (near the on off  power switch).  It has a three pin plug on the end. All be it a rather different one than our the usual  3 plugs we have in the uk.  This connects to an AC to AC convertor which has a output of AC 110V.   

[Johnny Mac]

I got an old Electro Harmonix power supply on Ebay for £4 and this old gem works fine! I think they're from around 1976. It sounds pretty good, all the controls still work ok.

[Telerocker]

Nice one, they sound good. Eric Johnson uses them.

[choucas09]

So you got an up and running EH delay for 4 quid. Life's pretty good sometimes.

[juansolo]

Cool find!