Technically, it won't have a large effect - just dropping the -3dB corner from ~5Hz to ~2Hz. A subtle improvement in the deep bass, perhaps. Based on experience with the BeePre and the Mainline, there does seem to be something there - but two out of two is still not statistically meaningful. We'll probably assess it in the Moreplay when the upgrades are prototyped.
Moreplay and BeePre II are our first preamps with a low-impedance level control at the output instead of the usual high impedance control at the input, so we're still exploring what works best. Incidentally, this change was PB's idea, and it seems to be working out quite well.
