PS Audio S300 vs Wadia a315


I have the S300 and really like it.  I was just wondering if anyone has had a chance to compare The 300 to the Wadia a315.  Both Class D and with good reviews.  I own the S300 but also own a Wadia DAC so I was curious about how the a315 would match up.
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From what I understand is that the PSA 300/700’s are world class amps class D or not. 
My two cents is stay away from anything Wadia. I had a Wadia CD player that broke down and with them being out of business was out of luck on repairs. I’ve had many PS Audio components and find them excellent.