Audio Database

A-DS474
Commentary

A 5.1 chAV amplifier equipped with a Dolby digital decoder, developed by taking over the technology of high-end machines.

Equipped with Dolby Digital Decoder and Dolby Pro Logic Decoder.
Also, by installing a 5.1 ch input terminal, it is compatible with DTS, etc.

Three surround modes are available for stereo sound sources : HALL, LIVE, and ARENA.

It is equipped with 2 types of digital input terminals which are coaxial with optical.

The DSP section uses Motorola's 24-bit DSP chip.

By adopting a large power transformer with a heat-resistant design, stable power supply has been achieved.

Discrete configuration is used for the power amplifier section.

Low NFB circuit is mounted.
We also aim to stabilize the ground potential, which is the standard for music signals.

We aim to improve the HICC (High Instantaneous Current Capability) for accurately driving the speakers under various conditions.

It is equipped with a large aluminum extruded heat sink separated for front and center & surround.

Equipped with an FM/AM tuner with preset and auto-tuning functions.

It comes with a wireless remote controller that can operate Onkyo CD player and cassette deck.

Model Rating
Type AV amplifier
<Audio section>
Rated output
(6 Ω, 1 kHz, THD0.1%)
Front : 70W + 70W
Center : 70W
Surround : 70W + 70W
Maximum Practical Output (6 Ω, EIAJ) Front : 100W + 100W
Center : 100W
Surround : 100W + 100W
Total harmonic distortion factor 0.1% (at rated output)
Cross modulation distortion factor 0.08% (at rated output)
Dynamic Power 150W + 150W (front, 4 ohm)
120W + 120W (front, 6 ohm)
Damping factor 60 (Front, 8 Ω)
Input Sensitivity / Impedance Line : 200mV/50k Ω
Phono MM : 2.5mV/50k Ω
Multi-channel input : 200mV/50k Ω (excluding Subwoofer)
Subwoofer input : 36mV/50k Ω
Output Level / Impedance Rec out Tape/Video2 : 200mV/2.2k Ω
Subwoofer pre out : 1V/2.2k Ω
Frequency characteristic Line input : 20 Hz ~ 30 kHz ± 1 dB (in stereo)
Signal-to-noise ratio (IHF-A) Line:100dB
Phono:80dB
Tone Control Maximum Change Bass : ± 10 dB (50 Hz)
Treble : ± 10 dB (10 kHz)
Phono RIAA deviation 20 Hz to 20 kHz ± 0.8 dB
<Video Part>
I/O Level / Impedance 1Vp-p/75 Ω (Composite Signal)
Tuner Section
Practical sensitivity of FM Mono : 1.0 μ V/11.2 dBf
Stereo : 2.0 μ V/17.2 dBf
Signal-to-noise ratio FM mono:76dB
FM stereo:70dB
Harmonic distortion factor FM mono:0.15%
FM stereo:0.25%
<General>
Image input Composite connectors : Route 3 (DVDs, Video1-2)
Video output Composite connector : 2 channels (Video2, Monitor out)
Voice input Digital terminal : 2 systems (optical, coaxial)
Analog connector : Route 6 (DVDs, Video1, 2, Phono, CDs, Tape)
5.1 ch analog jacks : Front L/R, Center, Surround L/R, Subwoofer
Audio output Analog connector : 2 channels (Video2, Tape)
Subwoofer pre-output : 1 system
Speaker output : front L/R2, center, surround L/R
Headphone output : 1 system
Power consumption 230W (Electrical Appliance and Material Control Law Standard)
External dimensions Width 435x Height 150x Depth 324 mm
Weight 10.7kg
Attachment Wireless Remote Control