Only signicant harmonic that increased was the second harmonic as expected, All other are either the same or lower.
IMD swept did seem to increase across the board. It seems related to the increased second harmonic distortion however when you look at the IMD spectrum analysis. You will notice that the IMD & IMD swept increased by approximately the same amount as the THD & the THD increase was 100% second harmonic only increase. While I wasn't quite expecting an increase in IMD I was expecting the THD increase & the fact that it was solely second harmonic increase &that the IMD in fact mirrored that increase.
frequency response slightly improved with D.C. coupling.
Crosstalk definately improved toward higher frequencies especially.
Difference in dynamic range though visable is too hard to tell which is better by the graph.
Overall even though there is a slight increase in distortion there is an overall more optimal distortion characteristic than the cap coupled cousin.
Lastly you D.C. offset seems higher than usual at least compared to what I've seen with the stock opamp
- will have to think about the (-0.253vdc) DC bias, with shorted Line-Out coupling caps....
- package in the mail to you tomorrow...
- check out next post... (dang OSCON solids might be a good thing for audio power caps...)