The dBooster2 is two channels of everything our original dBooster is, PLUS both channels double as super clean DI's for electric guitars and bass! Both channels are fully independent so you can plug in two mics at once, use both channels for DI's, or mis them up - one side for a mic and the other for DI. With microphones plugged in, the dBooster2 lets you switch between more than doubling the mic's input signal to quadrupling it, while maintaining an unrivalled amount of headroom with no loss of gain, regardless of the mic and preamp being used. When using the dBooster2's DI inputs, you can select 0dB (unity) gain, or switch to 8dB of gain if you need more level, still taking advantage of dBooster's ultra-clean high-end electronics. In mic mode, the 20dB setting quadruples the input signal, providing loads of clean boost for recording softer instruments and singers. For higher volume instruments or loud singers, switch to the 12dB setting to keep from overloading your preamp or digital interface. The dBooster2's dual Class A input stages deliver crystal clean gain with virtuall no noise or self-distortion. The dBooster2's low-impedance output delivers audiohpile-level performance in the studio and also shines on live stages, driving long cable lengths and difficult loads like mic splitters and any vintage-style preamp... with no distortion, no loss of gain, and more headroom than any other mic lifter. The dBooster2 gives outstanding performance with Royer R-121s, and R-10s and stereo SF-12s - or any other ribbon mic - and it opens up just about any dynamic mic such as SM7bs and RE-20s in a way you have to hear to believe.