Empirical Labs EL-Rx DocDerr 500 Series Channel Strip
Reverb Estimated Used Price Range
- $475 — $635
The Empirical Labs DocDerr (named after company founder and chief designer, Dave Derr) is a 500 Series line preamp with 3-band parametric EQ, HPF, wet/dry mix control, and an internal jumper for use with instrument level signals.
