POW-R is a wordlength reduction (dithering / noiseshaping) method, to reduce e.g. a 24 bit digital audio signal to e.g. a 16 bit wordlength without introducing any quantization distortions. The Weiss pow-r unit includes the standard set of three algorithms which make up the pow-r scheme, plus in addition offers flat TPDF dithering.
The pow-r unit is available in two versions, a two channel and a four channel version.