For Sale: Two sets of four Track Audio isolation footers (ie enough for a pair of speakers), in A1 condition. I only used six of these footers, so two of them are still in completely mint condition. These heavy footers are beautifully engineered, look fabulous and work really well in letting speakers sing, as it were. Each footer is 3" high, 1.7" wide and must weight over 1lb a piece. They are very solid! Each footer can support 79lb (ie a set of four could support a speaker or rack or component weighing up to 315lb). These sets of footers come with M10 adaptors, but I'm sure you could buy adaptors in an alternative size for not too much money (the standard adaptor sizes offered by Track Audio are 1/4 20, 3/8 16, M6, M8 and M10).
You can find a detailed review of the Track Audio footers on The Audio Beat (14 Dec 2011:
http://www.theaudiobeat.com/equipment/track_audio_spike_kits.htm). There is also another rave review from HiFi News magazine (Dec. 2102 issue) which can be downloaded via the trackaudio.co.uk website (under 'News & Reviews'). The latter review actually suggests 'the biggest gains come from [attaching the footers to] individual components', which is something I never thought of trying. There is also a detailed and extremely positive blog review at
http://www.adventuresinhifiaudio.com/26/08/2011/track-audio-isolation-spikes-quality-and-beauty-in-engineering/Current retail is $675 per set (ie $1350 for two sets of four footers each). NOW SOLD.
