Maybe in comparison to a real Hammond, it may not be perfect but, for most of us who are guitar players rather than keyboard players - and not all that many keyboard players have a real Hammond either in my experience - it's a pretty close approximation of the Hammond sound. Yes, from my experience with the pedal since I got it, I don't care for the click knob being set anywhere other than 'off', the modulation effect seems to have only a small amount of Leslie 'rotary-ness' to it but I've got a Mini Vent for that - and yes that does make a huge difference to the overall sound. It does tend to sound better with a compressor after the B9 and I've swapped the position of my Barber Tone Press on my board to accommodate that. Let's be honest, the B9 is very well priced for such a pedal - it's just under half the price I paid for the Mini Vent - so EH have done a pretty good job to get as much as they have into a relatively small box at a competitive price. I'm sure it could be improved but that would come at a cost and would more than likely increase the size of the pedal as well.