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Description
EMPIRICAL LABS DocDerr ELRX-H - 500 Series - Multi-Purpose Tone Module (Horizontal 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 H from Empirical Labs is a horizontal 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-H from Empirical Labs is a horizontal 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: 854682006115
In the Box
EMPIRICAL LABS DocDerr ELRX-H - 500 Series - Multi-Purpose Tone Module (Horizontal 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 |
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4.4 ★★★★★
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Product Reviews
★★★★★ 5
A Useful Tool for Those Interested in Creating Accumulators and Manifesting Orgone Energy
Format: Paperback
This book goes into more detail about how orgone behaves and how to apply the science of accumulators. This book shows you how to build upon the knowledge of Wilhelm Reich's discovery and creations. This will also teach you how you can construct your own orgone accumulating devices and how to direct and use the energy for different ideas. There are photographs and illustrations to show you how this can be done.
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Reviewed in the United States on December 28, 2016
★★★★★ 5
Excellent summary of a major scientific breakthrough that turns many ...
Excellent summary of a major scientific breakthrough that turns many accepted scientific paradigms upside down. Dr DeMeo's brilliant work allows the layman to grasp a completely new cosmology with direct and practical applications in daily life. Also Dr. DeMeo's brilliant work allows scientists to rethink those tenets at the foundation of current scientific worldviews and transcend those paradigms which are holding back real progress.Cheers to James DeMeo and, of course, Wilhem Reich's genius and unflinching courage, one more of history's crucified Jesuses.
Gaston Cornu-Labat, MD
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 12, 2016
★★★★★ 5
empowers readers to take their first confident steps toward change
Format: Hardcover
In Drama Free, therapist and bestselling author Nedra Glover Tawwab addresses the emotionally charged dynamics of dysfunctional family relationships with clarity and compassion. Rooted in her experience as a licensed therapist, Tawwab outlines the ways that unhealthy patterns—such as manipulation, enmeshment, neglect, or boundary violations—can shape our adult lives. Through digestible chapters and relatable examples, she encourages readers to recognize harmful dynamics and begin the work of detachment and healing. This is not a textbook, but rather a conversation starter, meant to normalize difficult realizations and introduce healthier ways of engaging with family.
The book’s strength lies in its practicality. Tawwab’s tone is warm yet firm, offering readers common-sense strategies for setting boundaries, reducing contact when necessary, and managing guilt associated with stepping away from toxic behaviors. While she does not go into deep psychological theory, her approach is grounded in self-awareness and personal accountability. Readers are encouraged to name their experiences, resist minimization, and begin advocating for themselves—even if that means redefining what family connection should look like.
The key takeaway from Drama Free is that peace is a choice, and one we are allowed to make—even when it means going against cultural or familial expectations. Tawwab provides a solid foundation for anyone beginning the journey of healing from family dysfunction. Though the book may not satisfy those looking for an in-depth clinical guide, it offers enough wisdom and structure to empower readers to take their first confident steps toward change. It's an accessible and affirming read that underscores the power of healthy boundaries and self-respect.
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Reviewed in the United States on June 14, 2025
★★★★★ 5
Highly Recommend to anyone going through family conflicts
Format: Hardcover
I love all of Nedra’s books. I highly recommend this book to anyone who has family conflicts that are taking a toll on them. It teaches you how to set proper boundaries and understand the situation and your feelings.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Practical Read for Managing Challenging Family Dynamics
Format: Hardcover
I found this text easy to read and a helpful way to reflect on my childhood experience and the relationships I have with my family members. The strategies are easy to implement.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026
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