The following are recommended Roland amplifies that work well with the TD-1DMK:
PM-100
https://www.roland.com/us/products/pm-100/
PM-200
https://www.roland.com/us/products/pm-200/
KC-200
https://www.roland.com/us/products/kc-200/
KC-400
https://www.roland.com/us/products/kc-400/
KC-600
https://www.roland.com/us/products/kc-600/