The Alesis Trigger iO is great. Specially if you do not have a drum machine module or it is just simple. Works great with Acoustic to Electric conversion kits and comes with software drums just in case you do not have a head module or software. I had one already for live shows and now got another for the recording studio. It has all you need to make your triggers work. Also each input is a stereo input so you can either have two triggers per input. that makes it a 20 trigger input device.
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