An extremely low-noise preamp, capable of handling line or instrument level signals, is followed by four EQ sections combining a two-position high-pass filter with three parametric bands, each with its own set of carefully tuned frequency presets. An internal jumper can transform DocDerr into an unparalleled instrument preamp with 16dB of gain, ideal for acoustic guitar, bass, synths, exotic plucked instruments, etc.
The versatile equalizer is followed by a unique dynamic section that offers renowned Empirical Labs compression at an unprecedented price and an extremely musical tape emulation circuit that smooths and tames high frequencies and transient peaks. We believe it is the best single-button “knee” compression available in this format.
One of the main features of DocDerr is the “Mix” button that allows the user to combine the uncompressed EQ signal with the compressed and saturated signal. This parallel compression technique, used by top recording and mixing engineers for many years, opens up a whole world of sonic possibilities.