The DK25/R is for "Recording" and has two TC25 omnis for overheads, an SR25 cardioid for kick drum, a KickPad™ and a windscreen. This model is ideal for use in an enclosed acoustic environment or a drum room/booth.The 2-TC25 was engineered to be used in our DrumKit™ System, but can also provide stunning results on a wide variety of instruments and vocals. The TC25 has the same attributes as the TC30 except its high frequency response goes to 25kHz. It will handle up to 145 dB SPL, is smaller in size, weighs less, and costs less than the TC30. The performance vs. price ratio of this microphone is excellent.The 1-SR25 was engineered to be used in our DrumKit™ System, but can also provide stunning results on a wide variety of instruments and vocals. The SR25 has the same attributes as the SR30 except its high frequency response extends to 25kHz. It will handle up to 145 dB SPL, is smaller in size, weighs less and costs less than the SR30. The performance vs. price ratio of this microphone is excellent. Just plug the KickPad™ into the mic line feeding your favorite cardioid kick drum mic and you will experience an incredible "instant kick drum sound" that is exactly repeatable, every time. This is a real time saver that will work with any cardioid microphone that is used tor kick drum. The KickPad™ is a passive device (requiring no phantom power) that can be used with either condenser or dynamic cardioid microphones. It will provide fantastic results for both "recording" and "live sound" applications.Mics Can be used For any Application on there own!