it's been over 15 years that I use is 10 series2 system acoustimass bass are very bad g bought a yamaha yst-SW150 subwoofer top o my really good amp pioneer has given up the ghost g bought a yamaha amp rx-v596rds happy with this brand and even more since since my bose system has a low sigh of sudden I'm forced to put the subwoofer to a minimum so if you have a bose system acoustimass10 series2 bought a yamaha amp is amazing the difference between a trying time g sony amp which I must admit my favorite brand is unfortunately such that with the pioneer too low, take the yam, g bought mine secondhand in a € 180 deposit sale is nine and has now € 450 baissé.tout well result in the fact that Yamaha is one of the only manufacturer has made him even these processors.