Input, phantom power switch, phase and pad switches. I use these for drums, guitars, bass, sax, percussion, acoustic miking and acoustic pickups... Is very handy Classic, and very versatile.
Beefy but focused lows, detailed mids, sweet highs. I'm definitely keeping a few! The item "Averill API preamp vintage 312 parts" is in sale since Sunday, November 12, 2017.
This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "willhunt" and is located in Gloucester, Massachusetts. This item can be shipped worldwide.