A.R.T. Tube PAC

I've had this A.R.T. Tube PAC for a while, but only recently got it working properly. This is a handy little unit that can perform several tasks: an active DI for an electric guitar (thanks to its 1M impedance on the unbalanced input), a mic preamp, a converter between 1/4" and XLR I/Os (with level shifting), a phantom power source and a compressor. The controls are relatively easy to understand (although one quick glance at the manual will be worthwhile). the unit sounds fine as a guitar preamp into a full-range sound system.