I plan on buying the HD650 soon, and have decided on Schiit Magni as the amp. Since i already have a Fiio Q1 driving the MSR7, figured why not use that as the DAC source for the Magni ? 3.5 mm to RCA converter from the back of the Q1 to the Schiit. Reason being that id hate the already lying Q1 to go waste, and buying an amp only along with the new hp's would fit the budget. Or an Aune X1s could be purchased instead of the Schiit. Would the first option of combining the Fiio and Magni be ideal for driving the Sennheiser, or would an investment in a better DAC be neccecary ? Or would the Aune itself do the job ?