The Schecter Hellraiser USA 212 guitar combo amp pushes 100W through two 12" Celestion Vintage 30's. The Focus control functions as a global "tweak" that adjusts the amp's input frequency response to custom tailor the low frequency response for different styles of guitars. The Normal and Active input Configuration activates circuit changes in the amp that compensate for active pickups' typical lack of low-end extension and high frequency sparkle rolloff. Ruby Spring Reverb provides perfect presence to compliment the four EL34-B power tubes.