Originally Posted by kriktsemaj99
Once you enable Pure Direct mode, the two channel analog inputs should follow the same path as the multi-channel inputs.
In both cases the volume is handled by an 8-channel volume control IC (that also includes tone controls for the front channels). I've never heard anyone claim that it degrades the sound noticably.
First I would like to say I am a Yamaha movies and music fan. I have owned 2070's in the early 90's, then a 3090, a Z11, a 3030 and now a CX-A5000 running 11.2 with 300 watts per channel on all but the fronts with have 1000 watts. Aside from not being able to support Atmos I think it is fantastic.
But, in answer to limhd200i original question and partially in response to kriktsemaj99 quote above, I have found issues that even in pure direct the 3030 and even the CX-A5000 which I now have do impact on the signal purity. But in my experience it does depend on the input device how much you will notice.
I have put a Cambridge Audio 752BD though and in comparison to being fed through a Pass Labs pre-amp there was some loss of timing particularly on drum attack and release. The same signal sent straight to the power amps using the volume control on the 752BD was also cleaner than through either Yamaha. However this was only really noticeable if one carried out an immediate A/B test.
Far more noticeable and easy to distinguish even in separated listening sessions was when trying to feed both my Movies and my dCS Scarlatti dac through Pass Labs Power amps to the Focal Diablo Utopia speakers.
When using either a Music First pre-amp or the digital volume from Scarlatti straight into the power amps with Sarum Tuned aray chord XLR the difference over feeding it through the Yamaha's (also using tuned aray sarum) was very noticeable. It still sounded better than the 752BD direct, but it did impact on the quality.
So based on that experience I would say it depends on the quality of your input device. Given the OPPO is often regarded as superior to the Cambridge 752BD I would expect limhd200i could hear the difference with revealing speakers.
I got round the problem initially feeding the front channels to the dCS to decode so I could maintain the direct scarlatti to power amp link. There was a small amount of centre channel bleed to the fronts but that was only noticeable when the Yam was turned down/off. With delay adjusted it sounded fuller using the dCS' dac than the yamaha's front. However for convenience I now use the Music First..
I would therefore recommend a stereo amp with AV bypass and connect your front pair, av pre-outs source to that.