Wiring AC/DC Components

Cpyder

Does anyone know if this can be done safely?:

Can you take the audio signal from an AC powered receiver and send it by way of an RCA cable to an amplifier that is DC powered?

[Deleted User]

Hello,
As long as the receiver has preamp outputs, yes you can do that. A person could use an amplifier that is normally used in a car audio application (powered by an external 12 VDC power supply) with an AC powered audio receiver with no problem. I hope this is what you meant.
Regards, Ken

Cpyder

Thanks Ken!

I was leaning towards yes, but I wanted to ask instead of finding out the hard way.

[Deleted User]

No problem, I'm glad the information was helpful. Over the years there have been quite a few well-respected audio components that used DC (battery) powered supplies. I think the first one I ever knew about was a preamp built by Arnie Nudel who owned Infinity at the time.

Cpyder

Would DC components theoretically sound better since they can avoid the noisy AC grid? DC power sources, like batteries, are especially low noise, right?

[Deleted User]

Yes, many designers feel that is correct, especially with low power consumption devices, such as preamps. In fact a well designed AC power supply should have the characteristics of a battery based power supply. Low noise and low supply impedance, for example.

Cpyder

Cool, good to know. Thanks again Ken!