power conditioners

The Audience Adept Response aR2p-TO High Resolution Power Conditioner is the latest in a product line of well received power conditioners which are priced from $695 to $8,600. The $1,600 aR2p-TO model differs from the basic $695 aR2p in its use of expensive Teflon-dielectric "Aura-T" capacitors with OHNO (mono crystal, oxygen-free) copper leads. I did not experience the basic non-Teflon equipped model.

Many turntables today include an electronic speed controller for the motor that drives the platter that makes the records go round and round. The purpose of these controllers is to make sure that the motor sees a very constant signal to maintain a very constant speed. The ear is more sensitive to variations in speed than to small inaccuracies in the exact frequency.