Speaker configs Model ID Amp Gain Speakers Sense Prot j180 AID19 sn012776 10 1× 1W+1T no atsp j274 AID6 tas5770 20 1× 1W no atsp j293 AID3 tas5770 15 2× 2W no atsp j313 AID4 tas5770 10 2× 1W no atsp j314 AID8 sn012776 15 2× 2W+1T yes spp3 j316 AID9 sn012776 15 2× 2W+1T yes spp3 j375 AID10 sn012776 20 1× 1W no atsp j413 AID13 sn012776 15 2× 1W+1T yes spp3 j414 AID14 sn012776 15 2× 2W+1T yes spp3 j415 AID27 sn012776 15 2× 2W+1T yes spp3 j416 AID15 sn012776 15 2× 2W+1T yes spp3 j456 AID5 ssm3515 15 2× 1W+1T no atsp j457 AID7 ssm3515 15 2× 1W+1T no atsp j473 AID12 sn012776 20 1× 1W no atsp j474 AID26 sn012776 20 1× 1W no atsp j475 AID25 sn012776 20 1× 1W no atsp j493 AID18 sn012776 15 2× 2W unused? atsp