I've not used the 901/902 combo... I know I will just need to experiment more with adjustments. Looking at the frequency response chart, it looks like the 902 will be closer to the Beta 52 than the D6 is... but I have a Beta 52 that I like... If I can't find a sweet spot for the D6, I'll switch back to the 52. I don't regret not going with Sennheiser. What I need is a Yamaha SubKick!!
Not really.