Robin Ashley of Phoenix Audio talks about the DRS-1R 500 Series Mic Pre at AES 2012. The DRS-1R uses Phoenix's well proven and loved Class A output stage (DSOP-2), but also has their latest breakthrough in transformerless Class A, Discrete Mic Input Technology which gives a "valve-like" sound. Learn more: http://vintageking.com/phoenix-audio-drs-1r-500