Synergistic Research FEQ - Frequency Equalizer

Original owner and excellent condition. $499 plus shipping and PayPal.

Small enough to hide in furniture, behind drapes and sofas, or in bookcases for the ultimate in invisible acoustic control. FEQ is a single channel ULF (Ultra Low Frequency) RF pulse generator that acts as a low-frequency dither to overpower the ambient RFI and EMI fields in your listening room for a more immersive experience. In addition to acoustic benefits, it also improves the performance of all SR products with UEF Technology. UEF Tech responds to specific ultra-low frequencies so your Core UEF, Atmosphere X, and Galileo SX cables perform better, along with your HFT’s and UEF Acoustic Panels. Even Tranquility Base UEF component platforms and Black Box low-frequency resonator arrays perform with noticeably increased levels of performance when excited by the strategic ULF signal generated.

"There was an immediate sense of greater liquidity to the sound and a billowing out of the soundstage into the room (most noticeable between the speakers). The bass also gained some heft and firmness. In my opinion I would not use the HFT devices without also purchasing an FEQ. They seem to work in a complementary fashion".