Regarding accessories i-fidelity.net recommends in general: Try it out in your own system, verify its effect and assess the relation between the acquisition costs and the tonal gain. When using the two Bluehorizon-products »Promat« and »Sanctum« introduced here, the chance of a substantial performance gain is very high. And they ask a moderate price for this gain, thus we clearly call both products a tuning tip.   Olaf Sturm