I have used this great piece of gear as practice amp and for home recording. Sounds good to me with both active and passive bass, I can dial in nice variety of tones with both. Works nicely for me with quality headphones or thru my warwick combo's effect loop return, bypassing combo's own preamp.
Scrambler was actually reason why I chose this over others, and it does deliver. It's easy to get from nice light overdriven tone to more "in your face" type grind, at least with hotter bass. Overdrive feels also quite dynamic. If it had "level" in addition to "blend" for overdrive it would be perfect.
And it's also great to be able to just throw "your tone" into gig bag with your bass. I would say this product is easily worth its price, at least I know I like it.