Hi, in my case I am using the Oppo with an integrated amp. My speakers are fairly efficient and my amp is rated at 150wpc. I found that if I set the Oppo's volume at variable : 85 it allows me to have the volume knob on my amp at 10-11 oclock allowing more headroom as opposed to having the Oppo at a fixed volume 100 where I don't have much manoeuvrability from the volume knob. This brings me to my question. Does this have an impact sonically on the sound? If I understand correctly , below 75 that is where a loss of sonic quality can be heard?