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.
Similar Products
Reverb Price Guide
Estimated Value for Empirical Labs EL-Rx DocDerr 500 Series Channel Strip Module on Reverb
Includes material, year, finish
*Excludes Brand New, B Stock, Fair, Poor, and Non-functioning. Prices exclude shipping and tax/VAT/GST.
