In article J_XNb.70138$sv6.146001@attbi_s52,
Sean wrote:
I would very much like to hide away the amplifier and somehow have its
power controlled by the presence of a line-level signal (this is for a
home system).

Xantech makes one although their 12V triggered outlet or a current
sensing outlet may work better in your installation. The current
sensing outlets activate one outlet (power amp) when a draw is measured
on the other (pre amp) and were also available from Sears (they're a nice
way to power up a dust collector when you turn on something else).

Power centers are available to do these things for more money, but
are redundant if you already have surge protection and conditioning.
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