Features Two distinctly different micpreamps in one box - one big and bold tube pre, one ultra-clean solidstate pre Vacuum tubes are hand-selected for low noise and excellent reliability For each channel, unique variable input impedance controls simultaneously perform gain make-up: pick the BEST sound, not just the loudest! Adjustable transformer saturation and switchable "60's" and "70's" gain stages for supreme versatility Informative LED metering displays input and output levels Description Product Description Two distinctly different channels: On the left, tubes 'n' transformers from the SLAM!'s micpre circuit. On the right, an immaculate solid-state micpre. Switch in the "60's and 70's" positions for some crunch. Tip: unique variable impedance control simultaneously performs gain make up - pick the BEST sound, not just the loudest.