Pioneer Vsx-515 Audio Video Multi-channel Receiver Channels 6.1 660 Watts Amplifier Output Details 100 Watt - 8 Ohm - 2 channel(s) ( surround back ), 100 Watt - 8 Ohm - Built-in Decoders DTS, DTS 96/24, DTS Neo:6, DTS- ES Discrete 6.1, DTS-ES Matrix 6.1, DTS-ES decoder, Dolby Digital Surround EX, Dolby Pro Logic II, Dolby Pro Logic IIx Response Bandwidth 5 - 100000 Hz