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Backed by 70 years’ experience in hi-fi design, the A-9150 invites you inside the energy of every musical performance.
In order to deliver a clear and comfortable audio image, it's vital that sounds of different frequencies arrive at the listening position simultaneously. Power amplification circuits feature original topology that's carefully tuned for phase accuracy, wide-spectrum signal reproduction, and natural transient response. Fitted with hand-selected audio-grade parts, the amplifier contributes to lifelike and involving sound quality.
Discrete SpectraModule boasts a slew rate of over 500 V/μs, significantly higher than competitive products that use a standard IC chip. High-voltage performance enables flat linearity into the megahertz range for full-bandwidth signal reproduction. This is important not only for natural transients expressing the nuances in music with freshness and vitality, but also for accurate definition of instruments ranged around a larger and more realistic soundstage.
The A-9150 makes your records sound better than ever. A gold-plated phono input supports signals from either MM or MC cartridges fitted to your choice of turntable. Separate phono circuit board has dedicated equalizers served by a top-quality customized head amp, which operates in discrete configuration for MC signals. Together with analog power amplification, this high-grade phono input design expresses the depth and vitality of music on vinyl.
Current has great influence on sound quality. High current is required for a better grip on the speaker transducers, improving control and accuracy. A customized high-output transformer and two huge custom capacitors inside the A-9150 deliver current through discrete output-stage transistors that are kept cool by an aluminum heat sink. Speakers react instantly, with throw-range precisely controlled for accurate articulation even through dynamic and complex musical passages.
Distortion in the ultra-high-frequency spectrum can have a noticeable impact on the character of audible sound. Even the best D/A converters introduce some noise to the signal, and that noise is amplified, distorting the sound you hear. DIDRC Filter completely erases ultra-high-frequency noise. Performance is optimized for digital music with an undistorted frequency response extending far above the range of audibility. Combined with a premium 768 kHz/32-bit DAC, you can enjoy a greater sense of realism from digital sources, with none of the unnatural "synthesized" feeling sometimes produced by digital processing.
A peek under the hood tells you what to expect from the A-9150. Held in place by a flat chassis that tames resonance, the digital audio board is isolated from the analog circuitry. L/R channels are symmetrical to equalize signal path-lengths and minimize stereo playback errors. Coaxial digital inputs, phono input, speaker posts, and RCA line inputs are gold-plated and of excellent quality. Finished with an aluminum front panel and volume control, the A-9150 presents as a component built to last.
|Power Output||60 W/Ch (4 Ohms, 20 Hz-20 kHz, 0.08% THD, 2 Channels Driven, FTC)|
|Total Harmonic Distortion + Noise||0.08% (20 Hz-20 kHz, Rated Power)|
|4 ohms||2 x 60 W/Ch|
|High-Current Low-Impedance Drive||Yes|
|Phono input||Yes (MM/MC)|
|DIDRC (Dynamic Intermodulation Distortion Reduction Circuitry)||Yes|
|Refined Power Amplification Circuitry with Discrete SpectraModule™||Yes|
|192 kHz/24-Bit HD Audio Playback via Coaxial||Yes|
|Tone control (Bass, Treble, Balance)||Yes|
|AKM (AK4452) 768 kHz/32-bit Digital-to-Analog Converter||Yes|
|Two Hi-Grade Customized Capacitors||Yes|
|4 Digital Audio Inputs (2 Optical and 2 Coaxial)||Yes|
|5 Analog Audio Inputs and 2 Output||Yes (4 Line In, 1 Main In - 1 Pre-Out, 1 Line Out)|
|Customized, Gold-Plated, Banana Plug-Compatible||Yes|
|Machined, Gold-Plated RCA and Phono Terminals||Yes|
|Line||200 mV/220 k-Ohms|
|Phono MM||4.0 mV/47 k-Ohms|
|Phono MC||0.4 mV/120 Ohms|
|RC Output||0.2 V/2.3 k-Ohms (Line Out)|
|Phono Overload (MM)||70 mV (1 kHz, 0.5%)|
|Phono Overload (MC)||7 mV (1 kHz, 0.5%)|
|Frequency Response||10 Hz-100 kHz / +1 dB, -3 dB (Line 1, Direct)|
|Bass||±10 dB, 100 Hz|
|Treble||±10 dB, 10 kHz|
|Signal-to-Noise Ratio||107 dB (Line 1, IHF-A), 82 dB (Phono MM, IHF-A), 73 dB (Phono MC, IHF-A)|
|Speaker Impedance||4 ohms–16 ohms (A or B), 8 ohms–16 ohms (A + B)|
|Power Supply||AC 120 V~, 60 Hz|
|No Sound Power Consumption||35 W|
|Power Consumption||170 W|
|Standby Power Consumption||0.15 W|
|Dimensions (W x H x D)||17 1/8" x 5 1/2" x 13 1/16" (435 x 139 x 331 mm)|
|Weight||20.3 lbs. (9.2 kg)|
|Dimensions (W x H x D)||22 1/2" x 10 3/8" x 16 1/2" (572 x 264 x 419 mm)|
|Weight||24.9 lbs. (11.3 kg)|
|Analog Audio(RCA) Input||5|
|Manufacturer Warranty||2 Year Parts & Labor|
|Watts per Channel (Watts)||60|