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DSM & Humboldt Simplifier DLX Zero Watt Dual Channel & Reverb Stereo Amplifier


The DSM & Humboldt Simplifier DLX is the natural progression of the original Simplifier — many weekend and worship guitarists’ favorite “zero-watt” analog amplifier. This pedalboard-sized stereo analog preamp and cab sim is every bi...- Read More

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The DSM & Humboldt Simplifier DLX is the natural progression of the original Simplifier — many weekend and worship guitarists’ favorite “zero-watt” analog amplifier. This pedalboard-sized stereo analog preamp and cab sim is every bit as versatile as having two fully independent amps at your feet. Dual independent signal paths allow you to meticulously dial in clean and dirt channels or, alternatively, run two wildly different tones in parallel to create elaborate wet/dry direct rigs. As with the original, each channel of the Simplifier DLX is driven by a triad of essential amp British and American amp tones. Only now, a 3-way Mode switch (Clean/Crunch/Lead) allows you to really slather on the saturation or dial up the dynamics in a hurry. Cab simulation and a new 3-way reverb can be dialed in per amp path, as can the Simplifier DLX’s simulated power tube emulation and critical feedback-based Resonance and Presence controls. Just like the original Simplifier, the Simplifier DLX makes a supreme pedal platform — its balanced TRS mono/stereo input stage and stereo FX return bring your boutique overdrives, stereo delays, and reverbs to life. Factor in a dedicated headphone out and aux in for live monitoring, an FX pass-through for handing off stereo effects to a pair of stage amps, low-noise stereo balanced XLR outs for sending signal to FOH, and a Spread switch that lets you achieve wide faux-stereo effects from mono guitar signals, and the DSM & Humboldt Simplifier DLX pedalboard preamplifier is a top-tier option for traditional players as well as those seeking to leave the amp at home.

The DSM & Humboldt Simplifier DLX is the brainchild of Manuel Jano Acevedo of Humboldt Electronics and Daniel Schwartz of DSM Noisemaker. The concept of the Simplifier line arose when both players knew they wanted to address their own gigging needs in a single fly-ready pedalboard solution. “Manuel is a worship player, so parallel amps with very nice cleans, with ‘bite’ and dynamics, were a must,” says Daniel. “I, on the other hand, am a heavier player, and I like 2-channel amps (for Rhythm and Lead) with stereo FX on the loop. So the Simplifier DLX really had to do it all.” And does it ever do it all. We feel the Simplifier DLX really expands on the original Simplifier’s sound and utility, with parallel signal paths, channel switching, and fully stereo signal chain.

Gigging guitarists require guitar amps that are great for accepting pedals, monitoring from the stage, and miking up for FOH reinforcement. The DSM & Humboldt Simplifier DLX brings these key functions to pedalboard-sized preamplifier that’s ready for prime time — no soundcheck required. Now you have the freedom to leave your amp and cab behind. The Simplifier DLX’s stereo balanced XLR outputs allow you to send a signal straight to a soundboard or stereo FRFR setup. Meanwhile, an onboard headphone amp lets you monitor yourself directly from your station to dramatically reduce stage bleed and increase isolation. All told, the DSM & Humboldt Simplifier DLX is a great way to save wear and tear on your amps, back, and ears.

The DSM & Humboldt Simplifier DLX makes a supreme stereo pedal platform. In fact, it’s by incorporating your pedals that this preamp really comes to life. A stereo FX return allows you to position your digital reverbs and ping-pong delays after the preamp and “power amp” stages to prevent and loss of signal or fidelity. Feed drive and compressor stomps directly into the input, and you’ve got a premium front end for serving up everything from Nashville cleans to blistering leads.

The Simplifier DLX’s twin analog preamps mimic the sound and handling of three essential amp voicings. Gain structure and midrange contour are unique to each voicing contained within. Two independent channels, each with their own 3-band EQ and Clean/Crunch/Lead switch, let you run wildly different tones in parallel or switch between them using the included two-button footswitch.

  • AC Brit: A sweet, sparkling voicing based on a British icon known for its twinkling cleans and emotive verge-of-breakup grind.
  • American: Supplies the quacky midrange and chunky bass of black-panel Deluxe. Sweet when clean; roars when pushed.
  • MS Brit: Packs on the glassy gain and forward character of a Plexiglas-paneled vintage amp stack.

Analog Power Amp Sim

The interaction between power tubes and output transformer plays a big part in the stiffness, compression, and saturation characteristics of our favorite amps. The Simplifier DLX brings you a 3-way tube toggle (6L6/EL34/KT88) and those essential feedback- and series-based Presence and Resonance controls to emulate the power amp stage of a driven tube amp.

Multi-stage stereo reverb

Independent reverb sends per channel on the Simplifier DLX means you don’t have to sacrifice definition in your crunch tones when building ambient cleans and sultry soaks. Room, Plate, and Ether reverb styles supply a generous range of tones to choose from, even without any other pedals in tow.


Stereo analog cab sim

The Simplifier DLX also gives you channel-independent analog cab sims for running signals straight out to a soundboard. Cycle between Combo, Twin, or Stack cab options per channel, then adjust the directivity of each virtual mic and speaker using the Mic Position knob — clockwise for brighter and more direct tones, counterclockwise for woolier and more off-axis sounds.

Stereo direct amp pass-through

Let’s say you want to run direct to the soundboard but still monitor yourself through cabs. Or, maybe you just want to monitor from your pedalboard and mic up cabs from the stage. The DSM & Humboldt Simplifier DLX is able to pass your stereo effects pedals directly onto your powered stage amps to provide a rich, stereo spread.

Pseudo-stereo Spread switch

Want to widen your appeal? The Simplifier DLX’s Spread switch converts incoming mono signals into pseudo-stereo to send you a faux double-tracked sound into your headphones and PA.

Headphone out and auxiliary input

Thanks to its powerful 135mW stereo headphone amplifier, the Simplifier DLX is a key ingredient in creating a silent stage. Practicing along to jam tracks? Monitoring MultiTracks in your in-ears? The Simplifier DLX’s auxiliary input lets you live monitor songs from your music library and audio from your DAW while you play, saving the need for a dedicated in-ear system.


DSM & Humboldt Simplifier DLX Zero-Watt Stereo Amplifier Features:

  • Pedalboard-sized analog preamplifier with onboard power amp sim and cab sim
  • Gives you 2 full independent stereo channels
  • Great for rhythm-lead duties or creating elaborate wet/dry direct sends
  • Totally analog signal path — no latency, no aliasing
  • Perfect for fly dates, commutes, and Sunday mornings — no amp or cab required
  • An ideal pack-in pedal platform
  • A key ingredient in creating a silent stage
  • Stereo balanced XLR outputs allow you to send a signal straight to a soundboard or stereo FRFR setup
  • Powerful 135mW headphone amp lets you monitor directly from your pedalboard
  • Auxiliary input for live monitoring jam tracks and MultiTracks
  • 3 onboard analog amp voicings (AC Brit, American, MS Brit) per channel — each with unique gain and midrange characteristics
  • 3-way Mode switch helps you slather on the saturation or dial up the dynamics in a hurry
  • Analog power amp sim section 3 tube types (6L6, EL34, KT88) and Resonance/Presence controls captures the stiffness, compression, and saturation of your favorite tube amps
  • Stereo analog cab sim with 3 assignable cab emulations (Combo, Twin, Stack) and directivity controls per side
  • Stereo amp pass-through lets you monitor FX pedals through stage amps
  • Spread switch converts mono signals to pseudo-stereo for inspiring faux double-tracked effects
  • 2-button footswitch included

    Tech Specs

    • Pedal Type:Modeling Preamp
    • Analog/Digital:Analog
    • Effects Types:3 x Reverb
    • Amp Modeling:3 x Amps, 3 x Cabinets, 3 x Power Amps
    • Inputs:1 x 1/4" TRS (instrument), 1 x 1/8" (aux in), 2 x 1/4" (return R/L)
    • Outputs:2 x XLR (direct out), 2 x 1/4" TS, 1 x 1/4" TRS (thru), 1 x 1/4" TRS (send)
    • Headphones:1 x 1/8"
    • Other I/O:1 x 1/8" (footswitch)
    • Power Source:9V-12V DC power supply (sold separately)
    • Power Usage:150mA
    • Height:2.5"
    • Width:5.1"
    • Depth:3.9"
    • Weight:0.95 lbs.
    • Manufacturer Part Number:DSM-DLXSIM

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    What is your shipping policy?

    We will ship completed orders Monday-Friday. Orders placed and paid before 1:00pm. PST will ship that same day. All completed orders after the cutoff time will ship the following business day. RGS does not ship on Saturday or Sunday.

    What is your return policy?

    We offer a 30 day Exchange policy for new purchases. We ask that you please return the product in the original product packaging along with all included materials (manual, warranty card, all accessories) and in the original condition that it was received and we will exchange it for any product on ours site. Please note that we do charge a $5 dollar exchange fee to cover our shipping cost. We are a small business and do not offer a cash refund. We cannot take returns on sealed product. We do not accept returns for guitars and amplifiers under any circumstances. Unfortunately we also cannot cancel orders or pre-orders. We are happy to exchange for another product if you are no longer interested in the new release or backordered items

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