I have read so much of the AMG STA amp and all seems very positive and better in resolution than the ST10 amp but needs a good source or dac to shine. Has anyone tried it with the Dac 10 as compared to Dac 10 ST10 combo? How would it fare as I have the latter and would like to keep the Dac 10 as the pre-amp but couldn't find any feedback on AMG +Dac 10 combo. Any feedback would be appreciated as I have no way of auditioning the STA.