This is a wonderful little toy. As an aside is it difficult to pick up and use a 303 with no prior synth experience?
The Behringer lets you connect to an app via USB so you can program it that way too.
The sound engine is easy to use and the knobs encourage experimentation - the interaction of the filter, the envelope and the accent is where the fun is. And of course the slide!
But yes arguably synth experience won't even help, the 303 sequencer is very weird and unlike any other sequencer
And the time mode must be programmed separately, which on several occasions has left me scratching my head at why the thing makes no sound at all.