Quantum is Presonus’s new 26×32 Thunderbolt2 audio interface. Taking full advantage of Thunderbolt’s high transfer speeds, Presonus says Quantum offers extremely low latency and expandable I/O. Its 26 inputs are comprised of eight built-in XMAX remote-controllable mic preamps and two sets of ADAT Optical inputs. Two TRS main outputs are complemented with an additional eight balanced line outputs, plus 16 Optical outs and two pairs of headphone sends on the front of the unit. Further expandability comes by stacking up to four Quantum units via Thunderbolt for a maximum of 96 inputs and outputs. BNC word clock I/O keeps things in sync, plus you get five-pin MIDI and S/PDIF I/O. Audio quality reaches to 24-bit/192k and Quantum integrates tightly with Presonus Studio One for enhanced functionality such as recallable mic pre settings. Quantum’s onboard features can also be controlled using Presonus’s free UC Surface control software for remote access.