a very very rare set-up. the mp11 is a truly classic preamp, fully programmable and comes with the much sought after floorboard. the mp11 sounds warm and punchy like all the old tes, and puts the option of 20 different sounds at your feet, no matter what style of music you prefer. the ra500 delivers 250 watts per channel, mono, stereo, bridged or in bi-amp mode. the lows of your bass need power... and this powerstage delivers massive headroom. (no, it´s not digital :-) tes have always been underrated regarding their wattage... alhough the cabs are quite small in size they handle the amp easily. of course they are perfect for bi-amp mode, and their wedge design allows for perfect monitoring. http://bass67.111mb.de/forsale/for_sale/for_sale.html