nikonnolaWadia's are great dacs, this Wadia has a great output stage ,<100ohms output impedance and is capable of giving up to 4v se, 8v xlr output!!
Currenty I have a Wadia Di22 .
I hope you took the preamp out (if one was used) and tried it direct into your power amp and then used the Wadia's inbuilt volume control
Cheers George