IR1A is a convolution reverb plug-in, with an advanced zero latency convolution engine, ideal for re-creating natural room ambiences, guitar cabinets or special Fx. IR1A loads standard mono or stereo aiff/wav impulse response files (max of 10 seconds in length) in either aiff or wav format. IR start and end times can be set, and high or low pass filtering, and predelay applied, allowing creative shaping of the original IR file.