The Sony DPS-R7 converts the incoming analog signal to a digital signal, passes it through various effects, than re-converts it to an analog signal before output.
Quality-conscious design – A/D and D/A high performance converter The Sony DPS-R7 is a digital reverberator equipped entirely with Sony’s digital and audio technology at its highest level of sophistication which was released before with the Digital Reverberator, DRE-2000 and MU-R201 and achieved much appraisal.