ONKYO A-9070 *REFURBISHED*

List price: $1,999.00  

$1,149.00

You save: $850.00 (43%)
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Power and Clarity in One Sophisticated Device

Onkyo has declared war on distortion. The success of its campaign against noise is evident the moment you switch on the A-9070 Integrated Stereo Amplifier. New DIDRC (Dynamic Intermodulation Distortion Reduction Circuitry) dampens super high frequency distortion. Closed ground-loop circuits, HICC (High Instantaneous-Current Capability), and vibration-damping construction combine to produce a startlingly pure sound across a wide dynamic range. The unit’s four 15,000 µF capacitors keep plenty of power at the ready. Efficient parallel push-pull amplification paired with three-stage inverted Darlington circuitry works at reducing distortion to almost nil. Separate Wolfson® 192 kHz/24-bit DACs for both left and right channels improve performance. The unit is also equipped with 192 kHz/24-bit HD audio playback to handle modern formats. Four discrete amplifier modes—integrated amp, power amp, pre-amp, and split pre-amp/power amp—offer flexibility when integrating other hi-fi components. Details like an independent headphone amplifier, a phonograph equalizer, three digital audio inputs, four analog inputs, and gold-plated audio terminals/speaker posts speak of the highest build quality. The superb craftsmanship, technological refinement, and attention to detail invested in the A-9070 make it worthy of serious consideration for those in the market for top-shelf hi-fi gear.

AWRAT (Advanced Wide Range Amplifier Technology)

The A-9070 employs a host of proprietary Onkyo technologies to ensure optimal audio performance.
 

1. DIDRC (Dynamic Intermodulation Distortion Reduction Circuitry)
Despite being beyond the normal range of human hearing, frequencies above 100 kHz are susceptible to clock pulse and other forms of distortion from digital devices. Such distortion in the super high frequency range can generate “beat interference”, which in turn affects the character or atmosphere of the original sound. By improving linearity and reducing distortion in the super-high frequency range, Onkyo’s new DIDRC technology effectively reduces perceptible noise.
 

2. Low Negative-Feedback Design
Too much NFB makes a system susceptible to counter-electromotive force from the speakers, resulting in a drop in perceived sound quality. To avoid this, Onkyo focuses on improving the frequency response and reducing distortion, without relying so much on NFB.
 

3. Closed Ground-Loop Circuits
The A-9070 employs a sophisticated closed-circuit design in which each circuit has a separate link to the power supply. This helps to cancel individual circuit noise and keep the ground potential free of distortion.

4. HICC (High Instantaneous-Current Capability)
Handling current loads up to 100 amperes, HICC enables an amplifier to immediately cancel the speakers’ reflex energy and instantaneously send out the next signal. The same high current required to achieve this also supports the amplifier’s ability to handle speaker impedance fluctuations.
 

5. Symmetrical Twin-Monaural Construction
Power devices for the left and right channels of the A-9070 are aligned symmetrically. Each channel has the same electrical and structural design, and signal pathways are uniform in length. This helps to minimize errors in stereophonic playback.
 

Parallel Push-Pull Amplification Design with Three-Stage Inverted Darlington Circuitry

With parallel “push-pull” amplification, the amplifier’s transistors alternately “push” and “pull” the current. In pairs, one output device (a transistor) will amplify the positive half of the waveform, while another output device amplifies the negative. Push-pull amplification is highly efficient, but can be affected by occasional instances of distortion. This is where the three-stage inverted Darlington circuitry comes in. Three-stage inverted Darlington circuitry actively works to reduce distortion by employing a low negative-feedback design to maintain voltage stability and enhance transient response. It’s extremely sensitive to oscillations and requires sophisticated control technology. Together with the push-pull amplifier design, the three-stage inverted Darlington Circuitry shapes a clean, consistent signal to send to the outputs.

FEATURES

AWRAT (Advanced Wide Range Amplifier Technology)

DIDRC (Dynamic Intermodulation Distortion Reduction Circuitry)

Parallel Push-Pull Amplification Design with Three-Stage Inverted Darlington Circuitry

192 kHz/24-Bit HD Audio Playback via Coaxial Inputs

New Circuit Board Construction with Internal Struts to Reduce Vibration

Symmetrical Layout of L/R Channels

Separate Wolfson® 192 kHz/24-Bit DACs (WM8742 x 2) for L/R Channels

Four Large 15,000 µF Capacitors

1.2 mm-Thick Copper Bus Plate for Perfect Grounding

Four Amplifier Modes (Integrated Amp, Power Amp, Pre-Amp, Split Pre-Amp/Power Amp)

3 Digital Audio Inputs (1 Optical and 2 Coaxial)

3 Analog Audio Inputs and 1 Output

Main-In Terminal

Independent Headphone Amplifier

Discrete Phono Equalizer (MM/MC)

Speaker A/B Drive

Audio L/R Pre-Out

Customized, Gold-Plated, Banana Plug-Compatible Speaker Posts

Machined, Gold-Plated RCA and Phono Terminals

Auto Standby Function

GENERAL SPECIFICATIONS

140 W/Ch at 4 Ohms, 20 Hz–20 kHz, 0.05%, 2 Channels Driven, IEC 
180 W/Ch at 4 Ohms, 1 kHz, 10%, 2 Channels Driven, JEITA

Frequency Response:
10 Hz–100 kHz/+0 dB, -1 dB (1 W, LINE)
1 Hz–250 kHz/+0 dB, -3 dB (1 W, 8 Ohms)

Signal-to-Noise Ratio:
107 dB (Line, IHF-A) 
60 dB (Phono MM, IHF-A)
70 dB (Phono MC, IHF-A)

WHD: 435 x 174.5 x 431 mm

Weight: 18.1 kg

 

 

 

Four Amplifier Modes for the Ultimate in Versatility

Boasting the combined capabilities of a pre-amp and a power amp, the A-9070 is an amplifier with a difference. At the turn of a knob, it can be configured to run in any one of four distinct modes. Depending on how you want to integrate it into your hi-fi system, you can use it as an integrated amp, as a power amp, or as a pre-amp. On top of that, you can also set up the A-9070 in split mode. This enables the pre-amp and power amp to work separately, so you can incorporate another device, such as an equalizer.

 

HIGHLIGHTS

DTS:X™ Compatible

Supports Dolby Atmos® up to 5.1.2 Channels

160 W per Channel

Hi-Current Amp Design for Authentic Sound Reproduction

HDMI® 8 In / 2 Out Including 1 Front (4K UltraHD / HDCP 2.2)

Bluetooth Audio / Wi-Fi® with Spotify and AirPlay

DSD 5.6 MHz, FLAC 192 kHz/24-bit Hi-Res Audio Capable

384 kHz/32-bit Hi-Grade DAC

AccuEQ Room Acoustic Calibration

ADVANCED FEATURES

New DTS:X™ New Generation Sound Format Ready

Supports Dolby Atmos® Format for Exciting Multidimensional Sound

4K/60 Hz-Capable 4:4:4 HDMI® Terminals for UltraHD Entertainment*1

Supports HDCP 2.2 for Future 4K/Full HD Video Streaming and Broadcast*2

Built-in Wi-Fi® Certified Wireless LAN Capability

Bluetooth Version 2.1 + EDR Capability (Compatible Profile: A2DP v1.2, AVRCP v1.3) with Advanced Music Optimizer DSP Technology

Internet Radio and Music Streaming Subscription Services Included (TuneIn Radio, Spotify, and Deezer)*3

Playback Compressed, Lossless, and Hi-Res Audio via Local Network (MP3, WMA, WMA Lossless, FLAC, WAV, Ogg Vorbis, AAC, Apple Lossless, DSD 5.6 MHz, LPCM*4, and Dolby® TrueHD)

Proprietary AccuEQ Room Calibration with Mic Included

Advanced Music Optimizer to Improve Compressed Digital Audio Quality (Bluetooth Audio Included)

Control and Stream with Free Onkyo Remote Streaming Apps for iPod touch/iPhone*5 and Android™ Devices*6

PM Bass Boost for Deep Bass and Clear Mid-Range

Powered Zone 2 and Zone 2 Line-Out for Distributed Audio Playback in Another Room

Bi-Amping Capability for Front Channels

*1 6G video is supported on HDMI inputs 1/2/3, Main Out, and Sub Out.

*2 HDCP 2.2 is supported on HDMI inputs 1/2/3, Main Out, and Sub Out.

*3 Availability of services depends on region. Some services may require a paid subscription and firmware update. Availability of third-party services advertised here is accurate at the time of publication, but may be subject to change without notice.

*4 LPCM is supported via DLNA only.

*5 Compatible with iPod touch (3rd generation or later) and iPhone 3GS or later. All models require iOS 4.2 or later.

*6 Requires Android 2.1 or later.

AMPLIFIER FEATURES

WRAT (Wide Range Amplifier Technology)

H.C.P.S. (High Current Power Supply) Massive High Power Transformer

Discrete Output Stage Circuitry

Optimum Gain Volume Circuitry

PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio

PROCESSING FEATURES

HDMI Support for 4K/60 Hz, 3D, Audio Return Channel, DeepColor™, x.v.Color™, LipSync, Dolby Atmos®, Dolby® TrueHD, DTS:X™, DTS-HD Master Audio™, DVD-Audio, Super Audio CD, Multichannel PCM, and CEC

Dolby® TrueHD and DTS-HD Master Audio™ Decoding

AK4458 384 kHz/32-bit DAC (8 Channels x 1)

Dual 32-bit Digital Signal Processing Engines

4 DSP Modes for Gaming: Rock, Sports, Action, and RPG

Theater-Dimensional Virtual Surround Function

CinemaFILTER™

Direct Mode

Double Bass Function

Non-Scaling Configuration

A-Form Listening Mode Memory

CONNECTION FEATURES

8 HDMI Inputs (1 Front/ 7 Rear) and 2 Outputs

USB Port

Mass Storage Class USB Memory Playback Capability

2 Component Inputs

3 Composite Video Inputs

3 Digital Audio Inputs (2 Optical and 1 Coaxial)

8 Analog Audio Inputs

Phono Input for Turntable Connection

2 Parallel Subwoofer Pre-Outs

Location Numbered Speaker Terminal

OTHER FEATURES

Crossover Adjustment for Each Channel (40 ⁄ 50 ⁄ 60 ⁄ 70 ⁄ 80 ⁄ 90 ⁄ 100 ⁄ 120 ⁄ 150 ⁄ 200 Hz)

A/V Sync Control (Up to 500 ms in 10 ms Steps at 48 kHz)

Graphical Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up

Hybrid Standby Function with HDMI Passthrough

Smart Grid-Ready

Tone Control (Bass/Treble)

3-Mode Display Dimmer (Normal/Dim/Dimmer)

40 FM/AM Random Presets

Certified with DLNA Version 1.5

Firmware Updates via Ethernet and USB

RIHD (Remote Interactive Over HDMI) for System Control

Preprogrammed RI (Remote Interactive) Remote Control

GENERAL SPECIFICATIONS

Power Output: 160 W/Ch (6 Ohms, 1 kHz, 1% THD, 1 Channel Driven, IEC);
175 W/Ch (6 Ohms, 1 kHz, 1 Channel Driven, JEITA)

Frequency Response: 10 Hz–100 kHz/+1 dB, -3 dB (Direct Mode)

Dimensions (W x H x D): 435 x 173.5 x 329 mm

Weight: 9.4 kg

 
 

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