Summary: Got this one because of few reviews i have read and the listening tests. One of my main reasons for the purchase was the use of burr-brown converters in a very affordable box. Most other manufacturers use those converters in higher end models. Listening to music and movies on the 5.1 setup was good. Converters sounded very good, the high end definition was better and overall freq response was good. It has good balance of features and the build quality is ok.
Summary: I needed a receiver to pair with my new 2.1 speaker set from Monitor Audio. Having invested much into those, I didn't want to spend a ton of cash on a receiver. At the same time, I didn't want to skimp out and not get the most out of my set. The Onkyo NR509 provides an ideal balance of performance and affordability. I have my computer and cable box as occupying 2/4 HDMI inputs and I have my Wii occupying a component cable input.
Summary: I purchased the 509 as a secondary unit. I have been very impressed so far with its features and how it works. I have been buying stereo equipment for over 40 yrs now and have progressed from mono to stereo. From stereo to quadraphonic(I still have my marantz systems) and in modern parlance, from 2.1 to 7.2. This receiver just works. I like the net compatability which allows me more input into what I listen to. It is reletively seamless to use all of its features.
Summary: Forget everything you hear about this receiver being difficult to set up or having a confusing remote. For anyone with a rudimentary understanding of audio equipment, it's pretty intuitive. Sure the manual could be better written - there's virtually nothing about connecting to your home network wirelessly for instance - but a little time spent figuring it out or even searching YouTube for a few answers can get you past all of that.
Summary: I eventually settled on this receiver when I built out a 5.1 setup down in my living room. I have it's big brother - a 7.2 channel, THX monster that is three times the cost - upstairs in my media room but didn't need that level of quality/features for this, nor did my wallet need that level of emptying. For the price, this is hard to beat.
Summary: Configuration Speakers: Bose 5.0. TV: Sharp 42 inch. Remote: Harmony One Wireless Audio: Airport Extreme + Iphones Blue Ray Player: Samsung XBOX 360 Setup The setup: Easy. The network Setup: Easy HDMI throughput: No glitches Airport extreme wireless input: easy setup, clear audio (better than on my older yamaha receiver) Note: the set up mic was a real pro, I have an odd shaped room and it was able to balance it out much better than I have on my own in the past.
Summary: After many years of good service from my old Yamaha receiver I decided to upgrade even though the old unit was working fine - it just didn't have support for the new technology (HDMI, Network streaming, etc.). Hating to spend a lot of money to replace something that was basically working I wanted to keep the replacement cost low yet still pick up as many features as I could - the Onkyo TX-NR509 hit the target.
Very Good Receiver Overall, but Know All Features!
I. Smith "IS", Amazon
27 May 2011
Summary: Overall, this is a good receiver and I have come to be very happy with it. However, there are some very important things that a prospective buyer needs to know about it first; I didn't know these things when I bought it but fortunately I was able to work around them. The receiver doesn't covert between video formats. This may be a standard thing with receivers, but it was unbeknownst to me when I bought it and then read about it with dismay in the manual.
Summary: Sound quality is fine. Pity it has only 4 inputs - I should have gone for the next model up. The USB socket only works with audio not video - I was hoping to use it as a media player. The HDMI output will not drive my projector via an HDMI to DVI adaptor - it does say this in the manual but I didn't see this until after I had bought it.