switching FETs or relays

From: "MisFat@xxxxxxxxx" <MisFat@xxxxxxxxx>
Date: Sun, 02 Sep 2007 13:38:00 -0700

I want to run my amplifier via batteries and use a TTL driven switch
to turn it ON, only when it's needed - to save power. So for +/- 12
volts with 20 mA should i go with FETs or just used mechanical
switches?

.

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