TX-DS939

USA model

: 120 W/ch stereo, 8 ohms. THX Certified AV Receiver with Built-In Dolby Digital (AC-3) Decoder, Dolby Pro Logic, Two 24-Bit Motorola Processors and 18 Surround Modes

Amplifier Features (USA model)

120 Watts per channel into 8 ohms (stereo), 20Hz-20kHz, 0.03% THD,FTC (USA model)
Surround mode: 100 W/ch to front left/center/right speakers, plus 100 W/ch to rear left/right surround speakers
Non-NFB (negative feedback) power amplifier with dual inverted Darlington circuitry to dramatically reduce distortion
Ultra heavy-duty toroidal power transformer
Discrete power amplifier circuitry for all five channels for enhanced cooling, proven reliability and superior sonic performance
Auto-switched cooling fan turns on only after sustained, very high power runs
10 Pairs of heavy-duty, multiway insulated speaker binding posts
20-Bit Delta Sigma D/A and A/D converters for greater accuracy
Bass and treble tone controls for front L/R/C channels
Midbass control to fine tune the mid-range response
A/B Speaker selector and outputs

Audio/Video Features (USA model)

AC-3 Decoding DSP Precision : Powered By Motorola

Acoustic program presets to store parameter settings
Auto acoustic analyzer with microphone
4 Audio and 7 AV input terminals
Gold-plated inputs (excluding S-video)
Video-1 through Video-7 are S-video compatible
Front panel Video-7/Camcorder switchable inputs and outputs
Video Y/C mixing circuitry with Monitor TV Out and Recording Out for VCR
Record selector for sound and picture
Video tape and cassette tape dubbing
Logical, complete, onscreen color displays in three languages (English, Spanish, French)
Midnight Theater mode for late-night listening at low volume levels
4 Digital inputs (AC-3 RF/optical x 2/coaxial)
Intelligent Power Management (IPM) turns ON/OFF entire A/V system with TV power button
11 Pre Out terminals (front L/R/Center, surround L/R, subwoofer x 2, multisource L/R/Video/S-video)
Main In terminals for front L/R/Center and surround L/R channels
2 Video Monitor Out jacks

Latest-Generation Motorola Chips
Motorola's 24-bit processors, originally designed for professional use, easily outperform the 18-or 20-bit architecture of other DSPs.
Runnig at 80 MHz, the 56009 DSP can execute 40 million instructions per second (MIPS), with three separate buses to access commands and data simultaneously.

Home THX 5.1 cinema mode with Re-Equalization, Decorrelation and Timbre Matching circuitry
Built-in Dolby Digital (AC-3) decoder
Dolby Pro Logic Surround Sound
Powerful, precise, latest generation 24-bit Motorola 56009 and 56004 chips for dramatically greater processing capabilities
Built-in (AC-3) RF demodulator for videodisc player
18 Surround modes (Dolby Digital: AC-3, Home THX Cinema, Action, Drama, Musical Dolby Pro Logic: Pro Logic, Home THX Cinema, Action, Drama, Musical Others: Concert Hall, Live, Arena, Stadium, Night Club, Open Air, Church, Discotheque)

Unlike other manufacturers that try to get by with a 20-bit AC-3 decoder and 24-bit THX controller, Onkyo uses two sonically matched, 24-bit Motorola processors that are designed to work together.
The result is more accurate digital signal processing, so you can take full advantage of the higher quality software now available.

: General Features (USA model)

Multiroom and multisource (with AV selector) capability
Motorized precision volume control
Large, easy-to-read, 35-segment dot matrix fluorescent display
Additional display for lesser-used functions
4-Mode display dimmer (bright, normal, low, off) via remote
Gold-plated headphone and pin jacks
Sleep timer (remote)
Audio muting (remote)
Battery-free memory backup
3 Switched AC outlets
Solid aluminum brushed front panel
Brightly illuminated drop-down panel
High-rigidity, anti-resonant stamped steel chassis
Programmable RI compatible remote is free-standing for high visibility
: Tuner Features; 40 FM/AM random presets with four-group classification
Direct access tuning
Automatic FM/AM scan tuning
8-Character input
AM Loop antenna