Eliminating hum


I have read in the forum that using cheater plugs is one way of eliminating hum through speakers. My question is which components should have cheater plugs. Amp, preamp, DAC, or CD player?
al2214

Showing 3 responses by grannyring

Goodness I have used cheaters my whole 37 years of audio life. Most of us have and it will at least help you understand if it is a ground loop issue.

I must be lucky:). I have never, ever heard of any incident in real life to be honest Agoners.

Al, most amps are grounded at the first reservoir cap in the power supply etc...

This topic comes up all the time on many threads and it always makes me think " who has ever, ever been harmed by using a cheater on an amp or preamp?"
If a power cord would have a short to the chassis would'nt that trip a
breaker in the home? I think the most cautious of us would say never use
them as there is certainly a possibility of shock if all the conditions are
aligned perfectly. It is also reasonable to say many things we do every day
are far more risky. Things like riding a bike, taking a walk, ice fishing, etc...

I did just read this ...............

"In the professional audio and video fields, the cheater plug has been
identified as a serious safety problem. Its casual use as a method for
avoiding ground loops in analog audio and video signals (to eliminate hums
and buzzes) is dangerous.[4] Bill Whitlock, president of Jensen
Transformers, writes, "never, ever use devices such as 3 to 2-prong AC
plug adapters, a.k.a. 'ground lifters', to solve a noise problem!"[4] Whitlock
relates how an electrical fault in one device that is connected to its
electricity source through an ungrounded cheater plug will result in
dangerous, high current flowing through audio or video cables. Whitlo
Thanks Al. I did just read this.....seems we have some cases of electrocution on record. We Aphiles should be aware.

" In the professional audio and video fields, the cheater plug has been identified as a serious safety problem. Its casual use as a method for avoiding ground loops in analog audio and video signals (to eliminate hums and buzzes) is dangerous.[4] Bill Whitlock, president of Jensen Transformers, writes, "never, ever use devices such as 3 to 2-prong AC plug adapters, a.k.a. 'ground lifters', to solve a noise problem!"[4] Whitlock relates how an electrical fault in one device that is connected to its electricity source through an ungrounded cheater plug will result in dangerous, high current flowing through audio or video cables. Whitlock notes that in 1997, consumer audio and video equipment electrocuted nine people.[4]