Re: quality..
"The best, easiest and cheapest way I improved a good system was to hang some Moroccan rugs on the walls, they were aesthetically pleasing BTW."
Yes, improving the listening room pays dividends. There are also commercial products sold for these purposes. Most are extremely effective but are, IMO overpriced for what they are, and generally have a poor WAF.
*WAF = Wife Acceptance Factor.
Biting the hand that feeds IT
