EMPIRICAL LABS DocDerr ELRX-V - 500 Series - Multi-Purpose Tone Module (Vertical Version)
SKU: 87493302688

EMPIRICAL LABS DocDerr ELRX-V - 500 Series - Multi-Purpose Tone Module (Vertical Version)

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Description

EMPIRICAL LABS DocDerr ELRX-V - 500 Series - Multi-Purpose Tone Module (Vertical Version)Six Sections of Processing 3x Parametric Bands of EQ 1x High Pass Filter Aggressive Compressor Circuit Mix Knob Blends Compressor w Dry Signal Musically Saturates Like Analog Tape EL500 Rack w Super Quiet 16V Supply Stereo Link Switch Built In Instrument Input D. I. Hand Built and Calibrated in the USA The DocDerr ELRX V from Empirical Labs is a vertical multi purpose tone enhancement module that houses six different sections of digitally controlled

  • Six Sections of Processing
  • 3x Parametric Bands of EQ
  • 1x High Pass Filter
  • Aggressive Compressor Circuit
  • Mix Knob Blends Compressor w/ Dry Signal
  • Musically Saturates Like Analog Tape
  • EL500 Rack w/ Super Quiet 16V Supply
  • Stereo Link Switch
  • Built-In Instrument Input D.I.
  • Hand-Built and Calibrated in the USA

The DocDerr ELRX-V from Empirical Labs is a vertical multi-purpose tone enhancement module that houses six different sections of digitally controlled analog processing�and designed for any API 500- Series enclosure. The DocDerr features a low-noise preamp capable of working with line level or instrument level signals, followed by four sections of EQ 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 turn the DocDerr into an unparalleled instrument preamp with 16 dB of gain, great for acoustic guitar, bass, synths, exotic plucked instruments, and more.

The EQ is followed by a dynamics section which offers compression and a musical tape emulation circuit that softens and tames high frequencies and transient spikes. The DocDerr features the Mix knob, which allows the user to blend the uncompressed EQ's signal with the compressed and saturated signal. The DocDerr is great for tracking, fine-tuning tracks during mixing, and studio quality tone control.

DocDerr Module

Low noise line input, or instrument preamp, with compression and six digitally controlled analog sections of processing
Four sections of equalization including one high pass and three parametric bands
Complex compressor envelope generator that is fast, yet musically saturates at high gain reduction and features a program dependent release
Saturation circuitry that scrunches the highs, allows hotter levels, and uses filtering combined with germanium clip circuitry to soften loud high frequencies
Mix control to allow user to blend an uncompressed equalized signal back in with the compressed saturated signal (when on 0, only the equalized signal is put out)
DC coupled input and outputs
Selectable single ended or differential output (adds 6 dB gain)
Traditional and digitally controlled analog
Hard clip indicator lights illuminate when the sound level is within 1 dB of hard clipping and monitors many sections for internal clipping
All metal film and Roederstein resistors in the audio path
UPC: 854682006108
In the Box
EMPIRICAL LABS DocDerr ELRX-V - 500 Series - Multi-Purpose Tone Module (Vertical Version)
  • Limited 3-Year Warranty
Frequency Response 3 Hz to 180 kHz on EQ section (-3 dB points)
Dynamic Range -120 dB from maximum output (0.5% THD soft clipping) to minimum output, noise floor typically -91 dBu
Distortion Range 0.0006 and 12% at 1 kHz
Outputs DC coupled
Input Impedance 120 kOhms in instrument mode, 20 kOhms in balanced line in mode
Output Impedance 75 ohms
Maximum Output +28 dBm
Maximum Input Before Clipping +22 dBm, line in mode
Attack Time 1 mS
Release Time 0.2 seconds, program dependent, fixed internally
Power Consumption Typical: 2 W
Maximum: 4 W
Power Supplies 16 V
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 87493302688

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phil
Birmingham, US
★★★★★ 5
Great unit
Set name: 5.1 Receiver
Works great, was worried about having my hdmi run through it thinking id have to use it all the time but leaving it off the signal still goiles through to the TV. Very rleasy to hook up and very easy to use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
R
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Ron R
San Leandro, US
★★★★★ 5
Outstand Product!! 😉
Color: 14AWG-1 Lead
This is my second (at least) Nilight wiring harness. I wanted to re-do the lights on my Rhino 660. This makes it SO EASY! 👍🏼😉 And a hell-of-a-deal!! All I had to get was a "reamer" drill bit to enlarge the switch holes on my dash. Run the wire, attach the ends to the light, switch & power source, all done. I did add "shrink tubing" to my connections to add an extra layer of insulation/weatherproofing. 👍🏼
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Reviewed in the United States on November 16, 2025
D
Verified Purchase
Daniel T.
Chelsea, US
★★★★★ 5
Definitely a good buy very professional craftsmanship
Color: 14AWG-1 Lead
As a retired master technician for Honda and all makes and models of automobiles this harness is a cut above the others is put together immaculately and anyone that can put a wire through the firewall I purchased my light bar to harbor freight 22 in great lighting but their harness kit was 56 bucks I paid under 24 this and it looked identical except the switch on this is actually much more appealing cosmetically and works well functionally just had to drill a hole in one of the blanks 4 switches in my truck made it fit perfect and has worked flawlessly since I put it in a couple weeks agodefinitely do your homework sometimes I find great deals at harbor freight that nobody can touch on Amazon but then other times vice versa Amazon has a great product at a great price compared to harbor freight in other retailers
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Reviewed in the United States on February 22, 2020
F
Verified Purchase
FrugalDad
Carnegie, US
★★★★★ 5
Perfect for roof LED light bar
Color: 14AWG-1 Lead
This worked great for wiring a 50" LED light bar to the roof of my SUV. This kit conveniently includes a relay, switch with backlight, and fuses. I used a step bit to drill the pilot hole for the switch and worked my way up until it was the right size. I zip tied the excess wire and it made for a clean install. My only complaint is that the ring terminals were too large for the battery but it was easy to crimp smaller ones on.
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Reviewed in the United States on June 13, 2022
T
Verified Purchase
Trevor C.
Port Orchard, US
★★★★★ 4
Good harness
Color: 14AWG-1 Lead, Color: 14AWG-1 Lead
I bought this for the nilight 12in bar. It came in the same box and right on time. It easily connected to the light bar and into the engine. There is a lot of slack between the battery terminals and the bar, but it’s understandable if maybe you wanted to mount this on the back of your vehicle. I wish there was more slack between the relay and the switch, as having to go from the battery through the firewall and into the cabin requires sufficient length. I ended up getting rid of the circular switch that came with it and it’s complimentary connectors to replace it with my own rectangular rocket switch that fit better in the cabin. Overall good product. I’d advise to wrap electrical tape around the quick disconnect to prevent any weather wear.
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Reviewed in the United States on August 19, 2020

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