so i took delivery of it a few days ago and my initial testing has revealed mixed results...
Firstly in mono, it sounds great when playing in the upper ranges of the bass, say for solo work, but as soon as i play below a D the effect becomes very unnoticeable, and dosent really add anything good to the tone. increasing the time and tuning goes some way to solving this, but its not ideal.
when run in stereo this thing comes alive through headphones. wow, seriously wide!!!! makes anything you put into it sound huge and lush. so great studio tool, but not really for the average bass-pedal board me thinks.
All that said, i played some mono guitar, and keyboards through it and it simply sounds fantastic! so its a keeper, but not for the reasons i baught it for.
The reverb is usable on solo work, but im not really into reverb for my band sound so haven't really experimented much with it yet