I think
CloneCD can recognize an audio disc (correct me if I'm wrong Olli). I did some tests with my TEAC and Mitumi drive. First normal o-t-f copying with the audio Profile. Audio reading was limited to 8x like it's supposed to. I then switched the audio extraction to worst (fastest) but it was still limited to about 8x. Then I disabled the reading of SubChannel Data in a new Profile. Now it was better but still some buffer underruns. Then I disabled the allow reading of SubChannel Data from audio tracks for the reader (TEAC in this case). Now the buffer would stay at 95-100%.
Code:
I 16:37:19 Average Speed: 1439 kBytes/s (8.18) (1st attempt)
I 16:45:48 Average Speed: 2602 kBytes/s (14.79) (second attempt)
I 16:52:32 Average Speed: 2702 kBytes/s (15.36) (third attempt)