Speciﬁcations, AV Receiver HT-R557, RI Dock DS-A1X

Speciﬁcations

AV Receiver (HT-R557)

■Ampliﬁer Section

Rated Output Power (FTC)

All channels:	110 watts minimum continuous power
	per channel, 8 ohm loads, 2 channels
	driven at 1 kHz, with a maximum total
	harmonic distortion of 0.9%
Rated Output Power (IEC)
	5 ch ⋅ 130 W at 8 ohms, 1 kHz, 1 ch
	driven
Maximum Output Power (JEITA)
	5 ch ⋅ 160 W at 8 ohms, 1 kHz, 1 ch
	driven
Dynamic Power	210 W (3Ω, 1 ch driven)
	190 W (4Ω, 1 ch driven)
	130 W (8Ω, 1 ch driven)
THD (Total Harmonic
Distortion)	0.08% (Power Rated)
Damping Factor	60 (Front, 1kHz, 8Ω)
Input Sensitivity and	200 mV/ 47 kΩ (LINE)
Impedance	200 mV/ 47 kΩ (LINE)
Output Level and	200 mV/ 2.2 kΩ (REC OUT)
Impedance	200 mV/ 2.2 kΩ (REC OUT)
Frequency Response	5 Hz–100 kHz/ +1 dB–3 dB
	(Direct mode)
Tone Control	±10 dB, 50 Hz (BASS)
	±10 dB, 20 kHz (TREBLE)
Signal to Noise Ratio	100 dB (LINE, IHF-A)
Speaker Impedance	8Ω–16Ω
■ Video Section
Input Sensitivity/Output	1 Vp-p /75Ω(Component and S-Video Y)
Level and Impedance	1 Vp-p /75Ω(Component and S-Video Y)
	0.7 Vp-p /75Ω(Component PB/CB, PR/CR)
	0.28 Vp-p /75Ω(S-Video C)
	1 Vp-p /75Ω(Composite)
Component Video
Frequency Response	5 Hz – 50 MHz

■Tuner Section

FM Tuning Frequency
Range	87.5 MHz– 107.9 MHz
AM Tuning Frequency
Range	530 kHz–1710 kHz
Radio Presets	40

■ General

Power Supply	AC 120 V, 60 Hz
Power Consumption	4.5 A
Standby Power
Consumption	0.1 W
Dimensions	435 ⋅ 150 ⋅ 377 mm
(W ⋅ H ⋅ D)
	17-1/8" ⋅ 5-7/8" ⋅ 14-13/16"
Weight	10.2 kg
	22.5 lbs.
Video Inputs
HDMI	IN1, IN2
Component	DVD, VCR/DVR, CBL/SAT
S-Video	DVD, VCR/DVR, CBL/SAT
Composite	DVD, VCR/DVR, CBL/SAT, AUX
Video Outputs
HDMI	OUT
Component	OUT
S-Video	MONITOR, VCR/DVR
Composite	MONITOR, VCR/DVR
Audio Inputs
Digital Inputs	Optical: 2
	Coaxial: 2
Analog Inputs	DVD (MULTICHANNEL), VCR/DVR,
	CBL/SAT, AUX, TAPE, CD
Multichannel Inputs	5.1
Audio Outputs
Analog Outputs	TAPE, VCR/DVR
Subwoofer Pre Outputs	1
Speaker Outputs	L, R, C, SL, SR
Phones	1
RI Dock DS-A1X

Power supply	AC adapter (5 V DC)
Power consumption
(iPod not inserted)	0.5 W
Weight	220 g
	0.48 lbs.
Dimensions	112 ⋅ 60 ⋅ 112 mm
(W ⋅ H ⋅ D)
	4-7/16" ⋅ 2-3/8" ⋅ 4-7/16"
Connectors	VIDEO OUT, AUDIO OUT L/R,
		jack

Speciﬁcations and features are subject to change without notice.

HT-SP904 specifications

The Onkyo HT-SP904 is a sophisticated home theater system that combines sleek design with cutting-edge audio technology, providing a comprehensive solution for immersive entertainment experiences. This system is aimed at both home theater enthusiasts and casual viewers, delivering exceptional sound quality whether you're watching movies, playing games, or listening to music.

One of the standout features of the HT-SP904 is its powerful 5.1-channel speaker configuration. This includes five satellite speakers and a subwoofer that work together to create an enveloping soundstage. Each satellite speaker is designed to deliver rich mids and highs, while the dedicated subwoofer adds deep, rumbling bass that enhances the overall audio experience. This setup is perfect for enjoying the nuances of a film's score or the dynamic effects in an action sequence.

The HT-SP904 also incorporates Onkyo's proprietary Wide Range Amplification Technology (WRAT), which ensures that audio is reproduced with clarity and detail. WRAT minimizes distortion across various volume levels, allowing users to experience music and dialogue as intended by the creators. This technology contributes to the system's ability to reproduce high-fidelity sound, making it ideal for both cinematic audio and music playback.

Connectivity is another strong suit of the HT-SP904. It features multiple HDMI inputs, enabling seamless integration with the latest Blu-ray players, gaming consoles, and streaming devices. Furthermore, the inclusion of 4K video pass-through ensures that users can enjoy high-definition visuals without compromising picture quality. The system also supports various audio formats, including Dolby TrueHD and DTS-HD Master Audio, which enhance the home cinema experience by providing immersive surround sound.

The sleek and stylish design of the HT-SP904 allows it to complement a variety of home decor styles. The front panel is elegantly crafted, and the satellite speakers can be either mounted on walls or placed on stands, providing flexibility in setup.

In summary, the Onkyo HT-SP904 is a powerful home theater system that excels in sound quality, connectivity, and design. With its 5.1-channel setup, advanced amplification technology, and support for high-definition audio and video formats, it caters to both the needs of audiophiles and the everyday viewer. Whether you’re hosting a movie night or enjoying your favorite playlist, the HT-SP904 promises a compelling audio experience that enhances any entertainment setting.