Most ICe amps will sound painful in combination with the Focal titanium tweeter Wilson uses. Perhaps the 201/501 would be less bad with Rowland's new outboard power supplies, but I would still think you want an analog amp with Wilsons (PS - What made you decide to buy Wilsons?).
For what it's worth, the only times I heard the Watt Puppies sound really nice and smooth was with Levinson 33Hs and Transparent cable at the old Soundex in Pennslyvania. I think the preamp was Levinson also. Otherwise they sound scratchy to me.
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