Mono Step up transformer (SUT) for use with a mono phono cartridge connecting to to a stereo phono stage. Has switchable step up ratios of 1:10 (LOW) to 1:20 (HIGH) for SKY 20-S or 1:15 (LOW) to 1:30 (HIGH) for SKY 30-S. Has Ground/Lift Switch. As with all SUTs, set the phono stage to Moving Magnet settings (typically around 40dB and 47k ohms).  Must use shielded cables between the SUT and phono stage.  You can connect both output channels to the inputs.  One input channel will be disconnected internally to avoid ground loops.  The 2 output channels will each provide a mono signal to your phono stage.