I had an SRA base (they grey looking one) for an amplifier a few years ago. Looked good - but ultimately gave very little sonic improvement. I've experimented a lot with isolation over the years, both racks and things equipment stand on. At the less expensive and of the market, Townshend stuff actually works and gives tangible improvements. HRS and Grand Prix Audio works well at the other end of the scale, but the cost is high. As others have said - trial/error and experimentation is best, though with SRA it's difficult as it's all made to order. Hunt out something second hand - Audiogon best as the US seems to be their biggest market. IF all else fails - don't stress over it - pour more wine.