Be warned - while the marketing copy says you "get sounds from the TR-606/808/909" the reality is you get:
1 909 kick
1 808 snare
2 808 toms
1 808 clap
1 606 OH
1 606 CH
1 Noise not from any previous Roland machines
So you can't change the kick sound from 909 to 808, or the hats from 606 to 909, etc. I find this misleading and returned the product.
Is it well-made? Yes. Is it fun? Yes. Does it sound good? Yes, but it's also extremely limited in terms of drum sounds - so unless you're good with the selection offered don't buy.