Empirical Labs created the DocDerr 500 Series channel strip module to give your signal impressive punch in any mix - and to put you in complete control. The DocDerr includes a low-noise preamp that gives you up to 16dB of gain, and thats just the beginning. In addition to a 3-band parametric EQ (with selectable highpass filter), you get an onboard tape-emulation circuit, compression, and a Mix knob. This knob lets you blend the uncompressed signal with the saturated, compressed signal. You also get a handy "Bad!" hard-clip indicator on the DocDerr.