Sonic Defender
Headphoneus Supremus
Just to be clear, you have the P7 or the P7(Wireless) ?
When I listened to the regular P7 at the store it has a lot less bass compared to P7W for some reason.
The P7 wireless does indeed posses a similar bass signature to the P9, at least as far as I can tell, and it does differ from the P7 wired going by memory. The P7W has some design differences, mostly in the pads which I understand provided a different tuning opportunity for the designers. How different I didn't have enough time to compare, but I did find the P7 and P9 fairly similar. However, I'm not sure about the one note bass aspect, I find the P7 sounds pretty darn good in that respect. I'm quite certain it isn't detailed, reference level bass articulation, but it is still very nice and given the design goal as a portable, I think the bass quality is pretty solid.