Alesis D4 : samara's user review
« Good pti Module »
I use it for 1 year, but I had already had before. I was between a ddrum 4, nothing to do recess. If you just want a cheap module to trigger the bass drum is the one you need, or the most recent version (DM5) Dmpro or if you have a larger budget. Excellent value for money as it is for a pittance (like DM5) elsewhere.