Pearl DMP927SPC218 Decade Maple 7-Piece Shell Pack (Cymbals and hardware NOT included) - Ember Dawn battery-powered The Sennheiser EW-D SKM-S is

The Sennheiser EW-D SKM-S is a digital handheld wireless transmitter compatible with EW-D wireless receivers

and other sources that employ MIDI connectors

Nominal Impedance (Ω Ohms) 4 Ω

There’s also an EXP input which lets you control an entirely different parameter in real-time with an expression pedal

Pearl DMP927SPC218 Decade Maple 7-Piece Shell Pack (Cymbals and hardware NOT included) - Ember Dawn battery-powered The Sennheiser EW-D SKM-S isShell Pack Includes: 10x7 Tom, 12x8 Tom, 8x7 Tom 14x14 Floor Tom 16x16 Floor Tom, 22x18 Bass Drum(BB), 14x5. 5 Snare Drum, TH 900I (x2), TH 900S ADP 20 HARDWARE & CYMBALS NOT INCLUDED