McIntosh C12000 2 Channel Solid State and Vacuum Tube Preamplifier Brands_Elac The Pinnacle tweeter is feature packed The Pinnacle tweeter is feature packed with a finely tuned waveguide that dramatically improves the dispersion of high frequency energy ensuring a broad “sweet spot” while the critically damped rear chamber helps cut out any unwanted resonances Play the same song in each room or pick another song for each linked room the choice is yours there are four total outputs: one balanced vacuum tube the left and right channels are electrically and mechanically isolated from each other to allow true dual mono operation – resulting in the ultimate stereo separation and sonic purity