Dual mic preamp with separate D.I. It provides the classic preamplification of the ISA 110 and includes Lundahl LL1538 transformers. It has: Mic input: XLR x 2, Line input: TRS x 2, Instrument input TRS x 2, Send TRS x 2, Return TRS x 2, Balanced line output XLR x 2. It also provides Meterbridge and volume controls. Collective plug-in capability.