No I haven't but isn't there a review that compares the SA15-S2 to the SA11-S2 online? Maybe Stereophile? From what I remember the 15-S2 was cooler and more upfront sounding in comparison. It is a good read so just pointing it our :)
I am a big fan of the Marantz since I have three models.
They take on a significant improvement when the power fuse is replaced with a Synergistic Research RED fuse. The SR RED fuse comes with a 30 dail trial. This is time well worth spent.
Plus you get to take the top off your player and see the beautiful layout and workmanship of your unit.
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