I have a 3 or 4 year old SA-14,different model, my son has the 8260. He wanted to hear the difference. So I took his and added it to my system and turned it on. 3 days later, after, it got up to speed we played a piece of music that had just been played by my SA-14. There was no comparison. The SA-14 was superior and he was pissed. I do not know the SA-15 but assume it is a later or newer model and so assume it is better and you should get similiar results.