Eagleman,
I had experienced the same listening fatigue untill I figured the lack of a feedback and extreamly large linestage gain.
Hence I use Musical Fidelity X10 buffer at "External Processor" output loop and balanced line converter that completely eliminated this problem.
I spoke with manufacturer about the customized modifications of the unit... Since this unit is mostly built on OpAmps the feedback settings cannot be altered otherwise the stability will suffer.
Since the money I've paid for the unit are quite minimal, I decided to acquire these two units that totaled <$200.
I had experienced the same listening fatigue untill I figured the lack of a feedback and extreamly large linestage gain.
Hence I use Musical Fidelity X10 buffer at "External Processor" output loop and balanced line converter that completely eliminated this problem.
I spoke with manufacturer about the customized modifications of the unit... Since this unit is mostly built on OpAmps the feedback settings cannot be altered otherwise the stability will suffer.
Since the money I've paid for the unit are quite minimal, I decided to acquire these two units that totaled <$200.