hello all, i now have a sex 2.1 with some upgrades and, needing more than one input, i obtained a foreplay three (extended) with available upgrades in order to have the three inputs i need. now i am told that the 2a3 tubes are capable of providing a higher level of performance than i will be getting with my current stuff....so i am trying to find out how many inputs the stereomour has. since i am a practicing doofus i have shawn assemble my bh gear. i cannot tell how many inputs the stereomour has. info, please? thanks, don