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For high-quality audio reproduction all the way around, the TX-LR552 uses linear PCM 96 kHz/24-bit digital-to-analog converters for all channels, plus powerful and accurate 24-bit DSP processing for Onkyo's own Digital Soundfield processing modes (of which there are 4 to choose from). The receiver's multichannel audio processing abilities cover Dolby Digital EX, DTS-ES, DTS Neo:6, and DTS 96/24. It also includes the new Dolby Pro Logic IIx processing, which is capable of generating 6.1-channel surround sound from any source of 2 or more channels.
The TX-LR552 also features HDTV-capable component video switching (50 MHz bandwidth) with 2 component video inputs and one output. Additionally, the receiver helps you maximize video resolution while conserving inputs on your television by upconverting composite-video inputs to S-video or upconverting all composite- and S-video signals to component-video, letting you use just a single component-video output to your compatible television, even if some of your connected video gear is composite-video only. There are 3 each composite- and S-video inputs.
Additionally, the receiver offers 2 optical and 1 coaxial digital audio inputs, as well as a 5.1-channel analog input intended for use with high-resolution DVD-Audio and SACD players.
The TX-LR552's color-coded speaker terminals simplify speaker hookup, and it also offers A/B front speaker switching in case, for instance, you want to run a secondary pair of speakers to the kitchen. Assisting you in speaker setup, automatic speaker detection makes it easy to determine what speakers are connected. Use the included pre-programmed remote control to calibrate the relative volume for each speaker. The subwoofer output features an adjustable crossover setting to help you optimize subwoofer/satellite integration, even if (and especially if) your subwoofer does not have a built-in variable crossover.
What's in the Box
Receiver, a remote control, remote batteries, AM and FM antennas, speaker-cable labels, a user's manual, and warranty information.