Audio Performance
Unlike typical "entry-level" receivers, the TX-SR55 boasts 7.1 channels including the latest in surround decoding and processing, as well as high-quality digital-to-analog converters. High current power, combined with proprietary wide-range amplifier technology, define this receiver as anything but entry-level or typical.

Video Performance
A competent receiver must be able to cope with the myriad of sources available for AV applications today. The component video inputs are capable of passing high-definition (HD) signals for superb video quality. All composite and S-video inputs are converted to component video using time-base correction circuitry to correct video timing errors, which makes the video system easier to connect and operate.

A-BUS
The TX-SR55 includes connections for this simple, elegant multi-room audio distribution system. With A-BUS, a single wire to each room carries the audio and control signals to an easy-to-use in-wall keypad. And with its built-in IR repeating system, you can use the TX-SR55's remote control to operate the system from any room.

Musical Mobility
At Onkyo we understand that you don't live and work in only one room. Why then would you want your music to be confined to only one location? The TX-SR55 answers the call with its variety of second room features, like its ability to power an additional pair of speakers in another room while still maintaining 5.1 channels in a surround application.

Amplifier Design
Power Output (8 ohm, 20 Hz - 20 Khz, FTC)		85 W/Ch x 6
Identical Full-Bandwidth Channels		7
6 ohm Capable
4 ohm Capable		-
Reduced Nfb (Negative Feedback) Design
WRAT (Wide Range Amplifier Technology)
Non-Scaling Configuration
DACs		192 kHz/24-Bit x 8
High Current Low Impedance Drive
All Discrete Output Stage Amplifiers
Optimum Gain Volume Circuitry
Color Coded Speaker Terminals
Digital Upsampling
Home Theater Features
THX®Surround EX™And THX®Certified		-
Extended Frequency Response (+ 1 Db, - 3 Db)		5 Hz-100 kHz
DTS®-ES™Discrete/Matrix 6.1, Dts®Neo:6
Dolby®Digital Ex, Dolby®Pro Logic™II		PLIIx
VLSC - Vector Linear Shaping Circuitry		-
Aform Listening Mode Memory
Composite To S-Video Conversion
Composite and S-Video to Component Video Upconversion
Comb Filter for Composite to S		5-line
Multichannel Input		5.1
HDMI Video Upconversion		-
Cinemafilter™
Cinema Re-EQ		-
HDMI Switching Input/Output		-
Digital Soundfield Processing Modes		29
DTS 96/24		-
Late Night Mode
Dolby ProLogic IIx		-
On-Screen Display
Adjustable Digital Delay
Crossover Adjustment
Internet Features
Net-Tune™		-
Ethernet		-
Number Of Presets (Internet Radio)		-
Inputs
Audio And Av Inputs		2/5
HDTV-Ready Component Video Input/Output		3/1
Front-Panel Video Input (With S-Video)
S-Video Compatible Jacks Input/Output		5/2
Digital Inputs		-
Optical		4 (1 Front Panel)
Coaxial		2
Front-Panel Optical
Other		-
Digital Output		1 Optical
Amp In		-
Pre Outs
Front L/R, Center		-
Surround L/R		-
Surround Back		-
Subwoofer
Other Features
Dot-Matrix Display
Display Dimmer		3 Levels
Pure Audio Mode
Time Base Correction (TBC)
Dual Banana Plug Compatible Speaker Terminals		All Terminals
Sleep Timer (90 Minutes; 10-Min Steps)
Phono Input		-
Headphone Jack
DS-A1 Compatible
Enhanced IPOD Compatibility		-
XM-Ready		-
Zone 2 OSD		-
Zone 2 Subwoofer		-
Zone 2 Composite Video		-
Zone 2 (Multisource) Line Out		plus variable pre out
Intelli Volume