This tuner offers 4-ohm/8-ohm switching, which enables reliable operation with low-impedance speakers, and discrete output transistors that offer high-speed, high-current capacity and low distortion. The tuner has equal power to all five channels, meaning that left, right, center, left rear, and right rear all get the same power--important for theater-quality Dolby Digital and DTS multichannel surround sound. Dolby Pro Logic decoding brings home all the excitement and emotional impact of movie soundtracks. The system decodes and amplifies the surround channels already encoded in many movie videocassettes, TV dramas, and sports broadcasts. The tuner also features a fluorescent display and AM/FM random presets that store AM and FM stations in any combination. The preprogrammed remote lets you operate many types of non-Sony equipment.