drum pad 
noun
An electronic device with one or more flat pads which imitate the sounds of a drum kit when struck.Bikram, for instance, uses a ‘Handsonic’, which is an electric drum pad, along with his tablas....
- He was playing on the synthesizer, or turning and twisting knobs with one hand while still maintaining a solid beat on the drum pad.
- Trainee side drummer Aisling Collins won a silver certificate for a two-part march on the drum pad.