I hope someone can help me with an electronics question.?

Question

I have a Hughes & Kettner "Tube Rotosphere" guitar effects pedal that needs a replacement power supply. The original one was stolen and I have already e-mailed the company and I don't think I'm going to get a response from them..so that's why I'm asking if anyone out there knows where I can get another AC power adapter that is either an exact replacement, or would still work even if it's not a "Hughes & Kettner" power adapter.

Here are the specs:

12V

50-60 Hz

700 mA

It doesn't show a diagram of or mention the polarity, so I assume it must be a standard negative ground. Perhaps I should also mention that it utilizes an ECC83 vacuum tube within the power section. Any help would be greatly appreciated. Thank you!

Answer 1

12 volts input or output?

12 volts AC or DC?

700 ma AC or DC?

700 ma input or output?

I received your email.  I was unable on the web to determine the answers to the above.  I believe I can lead you to a power supply that will do the job, but I need to know if it plugs into the wall outlet: 120 volts AC input, and if the 12 volts to the equipment is AC or DC. and if the current of 700 ma is the input or the output, before I can give the correct answer.  See if the link below helps.

Answer 2

If you are in the US (you didn't mention the input voltage) any 120 VAC 700 (or more) mA supply will work as long as it has the same plug on it. Radio Shack (for one) sells them that even come with an adapter kit with several plugs in it.