Source: Official website, Last Accessed: 2015/04/01
As the latest addition to Onkyo’s range of Pure Hi-Fi separates, the A-9010 is engineered with sound quality as the foremost priority but -also- includes a generous selection of digital and analog audio inputs, built-in phono equalizer, and a high quality DAC. Other high-value inclusions such as the independent headphone amplifier, gold-plated transparent speaker posts, and chunky knobs for volume, tone, and input selection mark this as a high-quality product, the company says.
The A-9010 features 192 kHz/24-bit-capable coaxial and 96 kHz/24-bit optical inputs to accept Hi-Res, lossless, or compressed audio signals from source devices including PCs and media streamers. A-9010 features the same high-quality Wolfson WM8718 DAC unit as its bigger brother, the A-9050. Digital inputs let you explore the world of computer audio, send the sound from your TV to the amp and speaker system, or allow the A-9010’s high-quality D/A conversion stage to take over when playing compact discs.
The A-9010 includes an independent headphone amplifier powerful enough to drive your high-impedance cans with a sound signature that’s clear and detailed. There is, also, a built-in MM phono equalizer, allowing you to connect up a turntable and when an incoming analog signal is detected, the receiver automatically shuts down the digital circuitry to prevent interference.
Onkyo's Wide Range Amplifier Technology (WRAT) uses high current to maintain precise control of the loudspeaker drivers for accurate and musical audio reproduction. To achieve this, the A-9010 features a large EI transformer and audio-grade capacitors with an extruded aluminum heat sink to keep the amps cool. The amplifier circuits have discrete low-impedance output stages with heavy-duty transistors for instantaneous power and low distortion, while closed ground-loop circuits help to minimize noise.
The A-9010’s chassis is designed to isolate the audio signal from vibrations that cause interference during the amplification process. Another highlight is the gold-plated and banana-plug-compatible speaker posts with transparent screw-type knobs. The speaker terminals are connected to the amp circuitry inside the receiver via thick speaker plates rather than speaker relays to preserve signal integrity.
According to our information, there is also a "British" (a.k.a. the “UK” version) of the A-9010 which offers no DAC but has some differences in the circuit design (including audiophile capacitors) to give a different sound character.
For more information: http://www.onkyo.com/