"B Stock" and the Sale of Goods Act

RHemmings

Here's a major internet retailer selling a "B Stock" musical instrument. The listing claims that it's sold without warranty, though it's said to be in perfect condition.

http://cgi.ebay.co.uk/Black-Knight-CB-42M-5-String-Bass-Bk-RRP-159-95_W0QQitemZ390072001080QQcmdZViewItemQQptZUK_Musical_Instruments_Guitars_CV?hash=item5ad21a6238

Surely even though this item is "sold without warranty", the Sale of Goods Act will provide as good, or better, protection for the user. If there was damage or other problems listed, then those would form part of the contract of sale. But there aren't any here. So, surely the buyer would be protected, and the "no warranty" proviso is irrelevant?