Pure Preamp
Type: preamp (belt clip)
Features: extremly low noise circuit, bass/mid/treble/gain/volume controls
Preamp 97
Type: preamp
Features: bass/treble/gain/volume controls, battery or DC adapter powered
Dual Channel Preamp
Type: dual channel preamp (belt clip)
Features: bass/treble/gain/volume controls for each channel
Trinity Preamp
Type: dual channel preamp (belt clip)
Features: phantom power for a condenser mic, bass/mid/treble/gain/volume controls for each channel