NUX NSS-4 IR loader pedal PULSEMini Core Series Ampless? No worry, Pulse IR loader is the compact solution! Pulse (NSS 4) is a mini IR Loader pedal with 3 different modes including EG CAB, BS CAB, and AG IR. You can switch the types by tapping the tap switch. Besides that, you can use Pulse as a silent practice tool (1 8 phone jack) in the end of your pedalboard and even as a USB recording interface onto DAW. Specifications: Input Impedance: 1M Ohm Output Impedance: 10k Ohm Dynamic