1.  By special arrangement Acoustic Technologies single driver loudspeakers are available to BAS members for $400 a pair, shipping included. They gave a presentation at the BAS in 2010.

www.acoustictechnologiesllc.com

2.  I saw an ad for the Nordost QKORE ground unit in Stereophile. It claims to be the most effective grounding solution in the industry. Their patented Mono-Filament technology with purpose-built Low-Voltage Attractor Plates (LVAPs) constructed with a proprietary metal alloy and a passive electronic circuit, draws stray high frequency noise and voltage-generated magnetic fields to a manufactured earth point, leaving a clean reference behind. It will drop your system's noise floor, increase harmonic accuracy and clarity, and elevate the overall musicality. [It is not intended to be connected to earth ground]

A reviewer says it gives “tighter ...bass...a more accurate sense of rhythmic beat.” Starting at $2400.

Many years ago Mitch Cotter suggested mounting binding posts on a heavy copper strip for grounding purposes. By forcing the equipment chassis to a common low impedance connection it eliminated voltage drops due to circulating currents in the cable shields. Since in consumer equipment the signal low is the same as the ground return, that can reduce noise . Beyond that the QKORE seems to be voodoo science. In something like this there is always grain of truth. The rest is fantasy.

(All Electronics is selling “100 Amp Buss Bar on insulated base” for $6.95. Might be a good start.)

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