I think the op went and bought the PS Audio P20.
It was the highest priced suggestion. The lowest price suggestion: Right here: Carol wire 12 gauge/3 for about $1.50 a foot from a hardware store. An ordinary in wall duplex tandem box, $4 a Wattgate plug $12 Two Pass & Seymour heavy duty 20 amp duplex, $12, And a brass tandem duplex cover $4
It was the highest priced suggestion. The lowest price suggestion: Right here: Carol wire 12 gauge/3 for about $1.50 a foot from a hardware store. An ordinary in wall duplex tandem box, $4 a Wattgate plug $12 Two Pass & Seymour heavy duty 20 amp duplex, $12, And a brass tandem duplex cover $4