Onkyo are one of the better Japanese brands when we talk about Hi-Fi gear, so when they release a Reference Series of equipment your expectations increase accordingly, and the Onkyo A-9000R is their top of the line Integrated Amplifier in that series, above this you go to separates. So just how good is this Reference grade amplifier?
The Onkyo A-9000R is built as you would expect a reference grade amplifier to be; superb build quality, evident in it sheer mass when you lift it from the box, and the internal construction using dual mono wide bandwidth design principals is further evidence.
Those amplifiers offer up a lot of grunt with 140 watts per channel into 4 ohm speakers, and 75 watts per channel into 8 ohm speakers. With a large power supply feeding those amplifiers, there is plenty on tap for large transients and for excellent bass control of most speakers.
The Onkyo A-9000R also features an excellent if somewhat limited DAC by today’s standards. Offering 1 x optical, 2 x Coaxial, Asynchronous USB and unusually an AES/EBU input as well. All inputs operate at up to 24bit/192kHz with PCM only, no DSD streaming here sorry.
In listening to this amplifier, I used a pair of KEF R300s, and this is a very nice pairing. The sound would be described as one of neutrality with a relaxed midrange, typical of KEF speakers it has to be said. Dynamically the Onkyo delivers plenty of fast responsive power when needed, and the sound quality in every respect is excellent and worthy of the Reference moniker.
Onkyo A-9000R Specifications:
- Power output into 4 ohms: 140 watts per channel
- Power output into 8 ohms: 75 watts per channel
- Frequency Response: 10Hz – 100kHz
- THD: 0.03%
- Signal to Noise Ratio: 107db
- Weight: 18.5kg
- Dimensions: 435 x 175 x 435 mm
Why you want the Onkyo A-9000R:
If your needs are for DSD streaming then look elsewhere, however if you have a library full of CD rips, and HD tracks downloads then do put the Onkyo A-9000R on your must audition list as it delivers everything you could ask of an integrated amplifier of this class. Price wise it fits in between the excellent Denon PMA-1600NE and Denon PMA-2500NE, both of which have DSD streaming, so it is nice to have such choices, take your pick.