Yes, the Android App tends to distort bass with Boost 2 and 3 if you listen to bass heavy stuff like EDM. Although with gain at -6 I was ok.
I will tell XTZ to check on that, but as I wrote on my review, this App is temporary, they are supposedly looking for a good programmer to make the Dirac for Android.
The Desktop DAP has got a clearly better sound than the XTZ proprietary algorithm on the Android App. And the iOS App uses the Dirac algorithm but apparently the desktop DAP uses a newer one. So, Brooko, if you like to listen to music with PC/MAC, I suggest you contacting XTZ for the DAP. You need it.
Sonic, you see all filters for all products, but you should only use the filters made for the product you are using.
This is confusing, I told it to Anders. People will think, like you did, that the filters are not working well or distort. This is not true. Anders told me they will change this so that filters will be organized in folders for product or things like that.
I have also suggested adding EQ or other ways to customize the sound but they are afraid that people would mess things up and make them guilty. I disagree, but, we'll see.
Anyway now I believe the EQ on the Desktop DAP may not be needed, because people can use the EQ of their player (I use lot of stuff on Foobar, including a binaural file made by the Technical university of Cologne which is the most brilliant free spatial improvement I am aware of).
So, on the DAP you do not need more than one filter, the reference, and that alone is worth the whole money.
Talking of money, the Dirac DAP for PC/MAC costs only $20 if you order it together with the headphones. And it is worth each single penny.
I personally feel it is worth 49 too. It corrects also the Impulse Response, which is as much (if not more) important than the Frequency Response. And you do NOT get that with EQ.
Brooko forgot to mention this in his review I think. Btw, Brooko, what about linking this thread on your review?
So, that's what a manager of Dirac wrote me about their IR correction:
When the driver will reproduce a short transient the driver will not (due to laws of physics) stop immediately when the incoming signal stops, you get a overshoot of the driver with subsequent ringings. You could say that the sound pressure is proportional to the driver membranes acceleration which in its turn is proportional to the level of the incoming signal. We then add a short time delay (a few ms) so we can start accelerating the driver with a meticulous calculated opposite overshoot of the ringings while the original transient is coming in, and then create a near perfect transient as a result.
Now, this theory is known and can be done by almost anyone. But as with cooking food and a given recipy, there is a big difference in the end result depending of what chef you use.
I asked him what would be the practical audible effect of IR correction.
He wrote:
Typically improved sound stage, tighter bass, more clarity and transparent listening experience, with less listening fatigue.
Brooko, for the A/B, you can leave the BT on on both sources, and just manually disconnect the Divine from source A and manually connect it to source B. It takes less time than turning BT on and off.