If you're not absolutely set upon spending a lot of money, the Emotiva XSP-1 preamp is fully differentially balanced and comes with a nice remote control. It has received rave reviews from all who have tested/listened to it. And it comes with a 5-year warranty to boot!
You can view the unit and it's specs. here:
http://shop.emotiva.com/collections/processors/products/xsp1
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You can view the unit and it's specs. here:
http://shop.emotiva.com/collections/processors/products/xsp1
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