It depends on what I want at the time. In my main system (M analog) I turn up the volume to get the image that I like, which by the way is the best in 2-channel. But once I find that volume that i like, a bit on the high side, I can listen to random shuffle of various songs with various recordings all at the same volume level with minimal fatigue.

In multi-channel, if I turn it up, I find some songs sound great but other can be very fatiguing so turn it up and down per song to find the sweet spot for that particular song. Can't really set it and forget it at louder volumes. Therefore I find myself keeping the volume a bit on the lower side in multi-channel. But then I don't get the image that I like at the lower volumes, so I usually just listen to music in 2-channel so that I can turn it up and not have to adjust the volume.

DSP6000, DSP5200, DSP5500VC, P300W, SW1600, G68, 568.2, HD621, G57, G55, Oppo BDP-105.