Hi,
nothing under equipment, i have discovered this after purchasing Bassocontinuo Reference line rack. Any really good rack will justify this. Speakers are different and need decoupling, where any material with elasticity absorbs too much from enjoyment, and hard material as spikes (better metal better results) gives speed and tighten things up. The best i have used by far, under equipment, are Acoustic system footers (equipment foot topline and classic), with amazing results and Herbie's Iso-cup with good results (a very affordable option).
nothing under equipment, i have discovered this after purchasing Bassocontinuo Reference line rack. Any really good rack will justify this. Speakers are different and need decoupling, where any material with elasticity absorbs too much from enjoyment, and hard material as spikes (better metal better results) gives speed and tighten things up. The best i have used by far, under equipment, are Acoustic system footers (equipment foot topline and classic), with amazing results and Herbie's Iso-cup with good results (a very affordable option).