Input- Sensitivity- Impedance- Connection- Common mode rejection- Type- Monitoring | All models have the same voltage gain (which eases multi-amplification)20kΩ3 pin XLR - metal housed, gold contacts100dB CMRR, based on psychoacoustic criteria since 2012High precision balanced input stage (impedance matched to PRS1.5)Level metering on bargraph (-15dB to +3dB) (except HQS1050: -3dB, +3dB)Input offset, overload and high temperature indicated by LEDs |