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The 11 best electric guitar amp simulators

Written by a human

When it comes to guitar sound, all-in-one pedalboards that model amps, effects, and speakers are clearly all the rage. They offer a compact, comprehensive solution for playing in the studio or on stage.

The 11 best electric guitar amp simulators:

However, some guitarists prefer to rely on individual pedals for effects management and therefore need amp simulators that do not include built-in effects.

As their name suggests, amp simulator pedals are devices whose sole function is to reproduce the sound and playing feel of one or more amplifiers. Most of the time, these products are entirely digital, and their operation is based on two principles: modeling and capture. Modeling involves digitally reproducing each component of an amp to create a digital version that can be adjusted (equalization, distortion level, etc.). Capture works differently in that it records the amp’s sound exactly as it is set at a given moment. Some manufacturers continue to resist the digital invasion and offer analog solutions.

Numerous all-in-one units are popping up on the market and on the shelves of our favorite music stores—they’ll be the subject of an upcoming “Top” feature—but some musicians prefer to keep their amps and effects separate. The idea, then, is to purchase a pedal or pedalboard dedicated to amp modeling and connect a multi-effects unit or several individual pedals to it. As with all-in-one pedalboards, there are many amp simulators available; they come in various forms and offer different performance levels, at a range of prices. Although they don’t include built-in effects, these products usually feature reverb or a “Room” effect designed to make the playing experience more ambient and enjoyable, especially when using headphones.

In this “Top” list, we’ve compiled eleven must-have amp simulator pedals and pedalboards to help you make the right choice. This article is part of a series in which we’ll next cover all-in-one pedalboards.

1. Walrus Audio ACS1 MkII

Price: starting at $559.16
Buy at the best possible price
The ACS1 MkII from the American brand Walrus Audio is a stereo amp simulator in pedal format. It utilizes high-quality 24-bit/48 kHz converters and SHARC and ARM processors. It features no fewer than six amp models covering every conceivable style. Among them are some of the greatest classics in amp history: the Fender Deluxe Reverb, Marshall Bluesbreaker, Vox AC30, Orange Rockerverb, Peavey 5150, and Mesa Boogie Dual Rectifier. These amp models are accompanied by twelve top-notch impulse responses crafted by Tone Factor and York Audio. The pedal features stereo jack inputs and outputs, a USB-C port for firmware updates and importing third-party impulse responses (both of which are done entirely online— no need to install dedicated software), and MIDI IN and MIDI THRU jacks via 3.5 mm (1/8-inch) mini-jack connectors. The Volume, Gain, and Room controls are fairly intuitive and are complemented by three rotary encoders/knobs that provide access to a three-band EQ and other settings, such as the built-in boost or reverb. The ACS1 MkII features three types of reverb: Room, Hall, and Spring, and even a noise gate. But its biggest strength lies in its highly flexible stereo operation. You can very easily place one amp on the right and another on the left for a truly unique guitar sound. You can also use the same amp on both the left and right channels, but with different impulse responses to create a very wide and distinctive tone. Finally, the pedal stores three presets, and you can access up to 128 via MIDI. The ACS1 MkII from Walrus Audio is an excellent amp modeling pedal; it’s compact, powerful, and offers some very interesting options. €499 ($557.76).
  • Top-notch sound quality
  • Independent L and R channel adjustment
  • Very pleasant soundscapes
  • Easy to use
  • Stereo IN and OUT
  • Compact pedal
  • Boost: To Be Reviewed

2. Strymon Iridium

Price: starting at $422.45
Buy at the best possible price
Released in 2019, Strymon’s Iridium has maintained a prominent place in the world of amp simulators. Like the subsequent ACS1 MkII, it runs on two processors: a SHARC and an ARM. The pedal features three amp models: Fender Deluxe Reverb, Vox AC30, and Marshall 1959 Super Lead, labeled here as Round, Chime, and Punch. But Strymon didn’t stop there. Each amp has two versions accessible via the Drive or Middle controls. Each amp actually has a modified version that produces more saturation. For the Round amp (the Deluxe), the Middle control gives you access to Tweed-style amp tones when set past the halfway mark—a very thoughtful design choice. The three amps are complemented by nine highly varied impulse responses. These are from OwnHammer, cabIR, Celestion, and Valhallir. Users can also load their own impulse responses into the Iridium via the Strymon Impulse Manager. Room ambiance is also included, with three options: Small, Medium, and Large. You can, of course, adjust the level of this ambiance using the dedicated Room control. To adjust the pedal, you have Drive, Level, Bass, Middle, Treble, and Room knobs. Two small three-position switches let you toggle between the three amp models and the three impulse responses available in the pedal. The Iridium operates in stereo but doesn't let you assign different amps to the left and right channels. On the back, you’ll find a TRS jack input, two jack outputs (L and R), a TRS jack socket (EXP/MIDI) for a MIDI controller or expression pedal—which functions as a volume pedal placed before the amp—and a USB port for updating the pedal’s firmware and importing IRs. You can select the Iridium’s input mode using a small three-position switch: Mono, Stereo, or Sum. In Sum mode, the pedal sums the stereo input signals and routes them to the Left output in mono. Finally, for incredible feel and dynamics, Strymon integrated a discrete Class-A JFET preamp that provides up to 20 dB of analog gain. This preamp works with the DSP chips to create input saturation similar to a tube amp. The Strymon Iridium is a great amp modeling pedal that stands out above all for its sound quality (24-bit / 96kHz) and ease of use. €377 ($421.39).
  • Very easy to get started
  • Simple interface
  • Ability to import your own IRs
  • Classic, well-reproduced sounds
  • Stereo input via TRS
  • The "Punch" amp isn't quite as good as the other two

3. Boss IR-200

Price: starting at $391.08
Buy at the best possible price
With eight guitar amps and three bass amps, the IR-200 from Japanese brand Boss packs a punch. It runs at 32-bit / 96 kHz for optimal audio quality and includes 154 impulse responses, 10 of which were created by Celestion. Its architecture makes it clear that it’s designed to work with other effects pedals. The IR-200 features an effects loop with stereo return, which is handy for inserting time-based or modulation effects. You can route it either pre-speaker or post-EQ, as desired. The unit has a mono input and stereo outputs (A and B) via 6.35mm (1/4-inh) jacks. MIDI-compatible, the IR-200 also provides MIDI IN and MIDI OUT connectors on 3.5mm (1/8-inch) mini-jacks. For silent playing and practicing over prerecorded tracks, the unit features a headphone output and an auxiliary input, both via 3.5mm stereo mini-jacks. The IR-200 can even function as an audio interface thanks to its USB port. The Boss amp models cover every imaginable guitar sound. They include the following classics: Natural (a Boss amp with an “edge of breakup” tone), JC-120, Twin Reverb, AC30, ’59 Bassman, X-Hi-Gain (a Boss amp that produces a clear, rich high-gain tone), Marshall 1959 Super Lead, and Bogner Uberschall. Bassists can enjoy the following three amps: Natural Bass, X-Drive-Bass, and Ampeg SVT. Thanks to two DSP chips dedicated to impulse responses, the IR-200 delivers a very natural sound and playing feel. You can even use two impulse responses at once for a unique and immersive stereo sound. Three reverb types—Room, Studio, and Hall—are available for a more realistic playing experience when using headphones. Users can store 128 presets and 128 third-party impulse responses. The pedal includes software for loading IRs and creating presets. The Boss IR-200 is a comprehensive product that offers a wide range of sound possibilities. €349 ($390.10).

4. Fractal Audio Systems AM4 Amp Modeler

The AM4 is the newest addition to the Fractal Audio family. Although it includes a few effects, it focuses on amp modeling and uses the brand’s Cygnus X-3 technology. This technology ensures the precise, detailed modeling the brand is renowned for. Balanced TRS jack outputs complement the input, which has automatic impedance matching. Designed to be mounted on a pedalboard, the AM4 features an analog stereo effects loop for inserting time-domain or modulation effects. Two TRS jacks are also included for connecting an expression pedal and/or an additional footswitch. S/PDIF input and output, 3.5mm (1/8-inch) mini-jack MIDI IN and MIDI OUT connectors, and a USB-C port round out the rear panel. When it comes to amp modeling, the pedal uses the same technology as its big brother, the Axe-Fx III, to reproduce authentic tube amp tones. The brand has even replicated the specific controls of each modeled amp for a seamless and authentic experience (for example, the Marshall Plexi features two Volume controls: Normal and Treble). No fewer than 240 amps have been modeled. Each AM4 preset can accommodate up to four blocks, with each block offering four channels that you can switch between without any sound dropouts or interruptions. In addition to the 240 models, you get 45 DynaCabs—microphone placement simulations where you can position the microphone in front of each speaker (you can use two DynaCabs simultaneously). The AM4 can even load third-party impulse responses. The pedalboard stores 104 presets, with four scenes per preset, and can function as a 4x4 USB audio interface. It comes with the AM4-Edit editing software for Mac and PC. Fractal regularly releases firmware updates to ensure excellent compatibility and add new models. €899 ($699.99)

5. NUX Amp Academy Stomp

Like Fractal’s AM4, the Amp Academy Stomp from nUX includes a few effects, but it’s clearly designed to be set up alongside other pedals on a pedalboard. It runs at 32-bit / 48 kHz, with 2 ms of latency. This compact pedal unit with three footswitches includes 28 amp models, ranging from the JC-120 to the JCM2000, including the Matchless DC30 and Diezel VH4. A dedicated DSP chip handles amp modeling using nUX’s TS/AC-4K technology, which ensures much more accuracy than before. As with Fractal’s AM4, it features stereo impulse response technology, referred to here as Cyber IR. This lets you place the microphones wherever you want in front of the two virtual speakers, apply filters, and position them anywhere within the stereo field. In terms of connectivity, the Amp Academy Stomp is no slouch, featuring a jack-based effects loop, a stereo output (L and R) via TRS jacks, an auxiliary input, and a headphone output—both on 3.5mm (1/8-inch) mini-jacks—and even MIDI IN and MIDI OUT ports, also on mini-jacks. A TRS EXP/CTRL jack allows you to connect an expression pedal or an additional footswitch if needed. Also included is a handy, 30-second stereo looper. Thanks to its USB-C port, the Amp Academy Stomp can also function as a USB audio interface. But its biggest strength lies in the options it offers for choosing which amp to use. You can choose from the 28 nUX models or download a NAM A1 or A2 Lite file. The unit then converts it into a lightweight version using its internal file management technology (Image Loader). This process is very simple and is a real plus. It also includes 27 factory presets and 27 free slots for user presets. The unit includes 60 built-in IRs, with 40 user slots available. The unit even comes with a Bluetooth adapter that lets you control it wirelessly via a smartphone app. The Amp Academy Stomp packs numerous features into a compact, easy-to-use pedalboard. €249 ($329).
  • Image amp tones…
  • Ability to import NAM profiles
  • Can function as a full-featured audio interface
  • Very impressive Dual Channel Cyber-IR
  • Comes with a power adapter, an additional footswitch, MIDI adapters, and a Bluetooth adapter
  • Built-in looper
  • … too bad there are only three
  • Ergonomics
  • Sticky knobs
  • No shortcut to access the tuner

6. DSM & Humboldt Electronics Simplifier MKII

Price: starting at $447.11
Buy at the best possible price
With its Simplifier Mk-II, the Chilean brand DSM & Humboldt, based in the Santiago Valley, has taken a direction completely opposite to that of its direct competitors. It offers a fully analog stereo amp simulator that’s very easy to use. This small unit, about the size of a pedalboard box, is essentially a zero-watt stereo amp. It features Preamp, Power Amp, Master, and Stereo Cabsim sections—all entirely analog. For the Preamp and Power Amp sections, you can choose between three models—AC Brit (AC30), USA (Bassman), and MSBrit (Plexi)—using two small three-position switches. You can then adjust the preamp gain (Preamp Gain) and power amp drive (Power Drive). A three-band EQ is also included. The Master section features Volume, Presence, and Resonance controls. Finally, the Cabsim section includes two switches and two identical controls for the Left and Right channels. You can select the cabinet type (Combo, Twin, and Stack) with a three-position switch, and continuously adjust the speaker character using the Speaker Color control, which cycles through Black, Blue, and Green settings. This allows you to choose one sound for the Left channel and another for the Right channel. Designed for pedalboard installation, the Simplifier Mk-II features an effects loop with stereo return, stereo XLR outputs with a ground-break switch (DI Left and DI Right), jack outputs (Out L and Out R) with a switch to bypass the cabinet simulation, and a stereo headphone output on a mini-jack with its own level control. An auxiliary input of the same type is also included. For an enjoyable playing experience, whether through headphones or a PA system, the unit also features a digital reverb with adjustable level. Although it doesn’t include any switching options, the Simplifier Mk-II is a very good product that’s perfect for any guitarist looking for a simple stereo analog solution to replace their amp. €389 ($445.98).
  • Sound Quality
  • Playability
  • Connectivity
  • One speaker simulation per channel (L and R)
  • Built-in reverb
  • Build quality
  • Stereo effects loop
  • No option to switch
  • Price is a bit high

7. Two Notes Audio Engineering Opus

Price: starting at $290.23
Buy at the best possible price
The Opus from the French brand Two Notes is a digital amp simulator. Using the brand’s Tube-Stage Modeling (TSM) technology, it simulates preamps and power amps so that users can easily find their own sound. It includes 12 preamps that replicate most commonly used amps (for guitar and bass) and two power amp types: Class A and Class AB. You can choose the power tube type—EL84, EL34, 6L6, or KT88—and switch between Pentode and Triode modes. Each preamp has controls for Gain, Volume, Bass, Medium, and Treble. The power amp features Volume, Contour, and Depth controls. As a Two Notes product, it also includes the DynIR virtual speaker system, which lets you blend the sound of two different microphones placed in front of the speaker cabinet. You can choose the precise placement based on axis, distance and position in front of or behind the cabinet. The Opus comes with a wide range of DynIR speakers for guitar and bass to cover every sonic style. It operates at 24-bit / 96kHz and has a frequency response of 30Hz to 19kHz. The unit features a three-level input (Amp, Line, or Instrument), a speaker output (to be used only when the Opus is connected to an amp and a speaker), a Line Out on a 3.5mm (1/8-inch) jack, and a DI Out via XLR with a ground switch (no stereo output). Two Notes has thought of everything, as the Opus also features a headphone output and a stereo auxiliary input via mini-jack. A MIDI input on a mini-jack is also available. Users can import their own impulse responses, which are stored on a memory card inserted into the pedal, and use two of them simultaneously. A USB-C port is located on the side of the unit for connection to a computer to edit presets and import IRs. It also has Bluetooth and can be controlled wirelessly via a smartphone or tablet. You can apply studio effects such as EQ, enhancer, or reverb to the signal. Although quite versatile, the Opus does not have a switching system. If you set it up on a pedalboard and want to switch between multiple presets, you’ll need to use a MIDI controller. The Opus is an amp simulator that offers a range of interesting features at a fairly reasonable price of €259 ($289.50)
  • Well-built
  • Preamps are well-designed and thoughtfully selected and cater to a variety of uses and styles while staying true to the essentials
  • Excellent playing feel
  • Works very well with external pedals
  • Suitable for electro-acoustic guitars
  • A wide range of settings that lets you shape the sound to suit your needs
  • A well-executed MIDI section
  • A mobile app that’s pleasant to use, despite a few technical aspects that could be improved
  • No footswitches to at least control preset changes, even though there’s plenty of space
  • A readable display, but one that could have used a few extra centimeters
  • While the two outputs offer flexibility in routing, the OPUS doesn’t offer true stereo capability

8. Dimehead NAM Player

The NAM Player by Diemehead was the first hardware device that could play NAM (Neural Amp Modeler) files. Since then, numerous manufacturers have released compatible products, including nUX, Valeton, HeadRush, and Blackstar. Dimehead's unit plays NAM A1, NAM A2 Lite, and NAM A2 Full files without conversion or quality loss. This means you can enjoy the 700,000 capture files and impulse responses available on the TONE3000 website. Simply download them and import them into the NAM Player by connecting it to a computer. The unit comes with a fairly extensive selection of different speaker and microphone combinations, and the IR loader even includes low-pass and high-pass filters. A convolution reverb is also included and you can download numerous reverb impulse responses. The NAM Player features a chromatic tuner with a reference A adjustable between 430 Hz and 450 Hz. The unit includes controls for Volume, Phones (headphone output volume), Room, Bass, Mids, Treble, and Gain. A rotary encoder labeled “Parameter” lets you edit the settings. In terms of connectivity, the pedal features an effects loop via a TRS jack (Tip Send and Ring Return), a stereo headphone output via a 6.35mm (1/4-inch) jack, a mono output on an XLR connector, a five-pin DIN connector for MIDI IN, and a USB port for importing/exporting NAM files, IRs, presets, and firmware updates. The effects loop port also serves as a Line Out, without speaker simulation. Finally, thanks to the Dual NAM feature, users can combine two NAM files (pedal + amp, preamp + power amp, or two stacked amps). The Dimehead NAM Player is a great tool for guitarists whose sound relies on NAM files. Priced at €535, it offers good value for the money.

9. Poly Effects Ample

Price: starting at $379.87
Buy at the best possible price
Like other Poly Effects pedals, the Ample comes in a housing with two footswitches. The pedal has no menus, app, cloud storage, or option to download presets. The Ample features 56 NAM-format amp captures divided into seven categories: Clean, Crunch, Destroy, Classic USA, Classic UK, Gen-X, and Bass. Each category contains eight amp captures, which you can switch between using the Preset touch-sensitive zones 1 through 8. To adjust each sound, you access high-resolution sliders on the touch-sensitive front panel: Gain, Volume, Bass, and Treble. Each of the 56 NAM samples can be customized and saved as a preset. You can switch between presets using footswitches A and B or via MIDI. The pedal features 3.5mm (1/8-inch) mini-jack MIDI IN and MIDI OUT jacks, making it a bit more versatile and flexible to use. Footswitch B also activates a boost placed before the amp—which is always nice—and reverb is also included. The Ample features stereo input and output via TRS jacks and allows you to select different amps for the left and right channels. Despite having a USB-C port, the unit cannot load NAM files other than those preloaded at the time of purchase. This USB-C port is used solely for firmware updates and the USB-MIDI function. The Ample is a rather unique and original amp simulator. Priced at €394 ($378.92), it offers good value for the money.

10. TC Electronic Combo Deluxe '65

Price: starting at $151.28
Buy at the best possible price
While most amp simulators reproduce the sound and playing feel of multiple amps, some products focus exclusively on a specific amp model. This is the case with the Ampworx and UAFX series pedals from TC Electronic and Universal Audio. These series feature multiple amp-modeling pedals dedicated to a single amp—the Fender Deluxe Reverb, for example. These solutions can be practical for a guitarist who uses very few different tones or who only needs a clean tone to which they can apply a series of stompbox effects. TC Electronic’s Ampworx pedals offer two different channels (on the Combo Deluxe 65’, for example, Channel 1 corresponds to the Normal channel and Channel 2 to the Vibrato channel) and a boost (except on the Combo Deluxe 65’, where this boost is replaced by a spring reverb simulation, just like on the original amp). In addition, these pedals save the settings for each channel, which is very convenient. An output labeled “Output” has no speaker simulation, while a second output labeled “D.I.” features a Celestion speaker simulation. TC Electronic has done a great job with its Ampworx pedals—which you can read reviews of on Audiofanzine—which are equipped with a headphone output that lets you practice in silence. These pedals are priced at an average of €130 and offer excellent value for the money. The American brand Universal Audio has also decided to dedicate one pedal per amp. It has expanded its UAFX series to now include seven amp simulators and one pedal, the OX Stomp, dedicated to cabinet simulation. With these pedals, Universal Audio has gone a step further than TC Electronic by offering multiple variants, a wider selection of modeled cabinets, and more controls. Additionally, all UAD amp simulation pedals are stereo, unlike TC’s, which are mono.
  • Value for the money
  • Authentic sound
  • Built-in reverb with tone control
  • Middle control
  • Headphone output
  • Well-designed pedal
  • No vibrato
  • Only one built-in impulse response
  • No option to import other IRs

11. Universal Audio Lion '68 Super Lead Amp

Price: starting at $108.70
Buy at the best possible price
For the Lion, which emulates a 1968 Marshall Super Lead, you get three amp presets—Bass, Lead, and Brown—as well as a built-in adjustable boost. With an average price of €340 ($349), UAFX pedals offer good value for the money. You can now control them via MIDI, which is a real plus, and they come with a very well-designed smartphone app.
  • Excellent sound
  • Great playing feel
  • 3 different amps
  • Well-designed boost
  • Stereo input & output
  • No headphone output
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