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.
A-9070 | |
---|---|
Power Output | |
4 ohms | 2 x 200 W |
Dynamic Power | |
HICC | 80 A |
Audio in/out | 7/2 |
Phono input | ✓ |
AWRAT (Advanced Wide Range Amplifier Technology) | ✓ |
DIDRC (Dynamic Intermodulation Distortion Reductio | ✓ |
Parallel Push-:ull Amplification Design with Three | ✓ |
192 kHz/24-Bit HD Audio Playback via Coaxial | ✓ |
New Circuit Board Construction with Internal Strut | ✓ |
Symmetrical Layout of L/R Channels | ✓ |
Tone control (Bass, Treble) | ✓ |
Separate Wolfson® 192 kHz/24-Bit DACs | ✓ |
Four Large 15,000 µF Capacitors | ✓ |
3 Digital Audio Inputs (1 Optical and 2 Coaxial) | ✓ |
3 Analog Audio Inputs and 1 Output | ✓ |
Customized, Gold-Plated, Banana Plug-Compatible | ✓ |
Machined, Gold-Plated RCA and Phono Terminals | ✓ |
Independent Headphone Amplifier | ✓ |
Amplifier Section | |
Power Output | 140 W/Ch (4 ohms, 20 Hz–20 kHz, 0.05%, 2 channels driven, FTC) |
Dynamic Power | |
1 ohms | 450 W/Ch |
3 ohms | 230 W/Ch |
8 ohms | 100 W/Ch |
Total Harmonic Distortion | 0.006% (Half power) |
Damping Factor | 130 (1 kHz, 8 ohms) |
Input Sensitivity and Impedance | |
Line | 150 mV/47 k-ohms |
Phono MM | 2.25 mV/47 k-ohms |
Phono MC | 0.18 mV/100 ohms |
Output Level and Impedance | |
Rec out | 200 mV/2.2 k-ohms |
Phono Overload | 70 mV (MM, 1 kHz, 0.5%) |
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) |
Tone Control | |
Bass | ±10 dB, 80 Hz |
Treble | ±10 dB, 10 kHz |
Signal-to-Noise Ratio | 107 dB (Line, IHF-A) |
Speaker Impedance | 4 ohms–16 ohms (A or B), 8 ohms–16 ohms (A + B) |
GENERAL | |
Power Supply | AC 120 V, 60 Hz |
Power Consumption | 3.3 A |
Standby Power Consumption | 0.1 W |
Dimensions (W x H x D) | 17 1/8" x 6 7/8" x 16 15/16" (435 x 174.5 x 431 mm) |
Weight | 39.9 lbs. (18.1 kg) |