These preamps let you add eight dual XLR/TRS inputs to your audio setup. I connected one of these preamps by optical cable to the TASCAM Series 102i audio interface (which has two combo XLR/TRS inputs of its own) to make for a total of ten combo inputs on my laptop. This brings that setup to ten XLR/TRS combo inputs. On my tower computer I have one of these connected to a TASCAM Series 208i for my recording booth, with that setup having a total of 12 combo inputs.
The two front inputs are capable of low-impedance input signals (such as what your electric guitar uses when plugged directly in)
The Series 8p Dyna features per-input analogue compression and independently selectable per channel +48v phantom power.
It takes an optical cable to connect this preamp with a TASCAM Series USB interface to take full advantage of its built-in features. The TASCAM driver software treats this with the Series 102i as one device with ten inputs; with Series 208i it counts as 12 inputs. Connect two of these to a Series 208i to get the maximum 20 48k/24 bit combo XLR/TRS inputs with six of them capable of directly handling low-impedance instruments.
This has been working perfectly in Studio One. It was easy to setup and is easy to use.