:: Headphone/Preamp & USB-DAC :: HiFi500 :: info@hifi500.com ::
One of the Stello units would make a nice mate for your Woo. I dont know if 500 will get you much of an upgrade unless you find something spectacular in the used department. IMO, I would save a bit and go for something like a Benchmark Dac1 or the Stello Signature. BTW, does your Woo have any upgrades and is your microDac the standard or ultra?