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.
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.
From what I understand is that the PSA 300/700’s are world class amps class D or not.