Fortunately, solutions are legion: hardware amp emulators, faux-amp plug-ins, and—our focus here—load box/speaker emulators that let you capture the sounds of your favorite amps minus their usual volume. In fact, we're zeroing in on one particular type of product: load box/emulators that faithfully mimic the sound of a miked speaker via impulse responses.
Impulsive Behavior
Speaker impulse responses (IRs) are created by running a test signal through a cabinet and recording the results. The software then compares the raw signal to the sound that emerges from the speaker, and imposes the same coloration on raw, direct-from-amp tones.
Meanwhile, the load box makes your amp "think" it's connected to a speaker. (Running an analog amp without a speaker load is a quick way to destroy the amp.) The four devices examined here include speaker-out jacks, so you can play through your speaker at reduced levels if desired while simultaneously capturing the direct IR sound. All four offer attractive faux-speaker sounds. Beyond that, prices and features vary dramatically.
While we're specifically examining stand- alone devices, it's also worth noting that amp manufacturers—among them Revv, Fender, Victory, and Mesa/Boogie—are increasingly offering built-in cab IR tech, too.
During COVID, many of us needed to carve out sonic space for remote-schooled kids, telecommuting roommates, and housebound neighbors griping about loud music—not just on evenings and weekends, but 24/7.
About the Demo Clips
I recorded all clips using a ReAmp, so I could run the identical material through each device without having to worry about performance inconsistencies. Each device is represented by three clean tones and three distorted tones. All were recorded through a Carr Lincoln amp, a Vox-inspired boutique model. The test guitars are a pre-CBS Fender Stratocaster for the clean tones and an '80s Gibson Les Paul with retro-style PAFs for the crunchy ones.
Exercise caution when making direct sonic comparisons. The available models and effects vary from device to device. Also, since the Mesa CabClone IR+ has no effects, its clips lack the fattening compression and rich ambience of the rival examples. But CabClone users can easily add those effects within the DAW or at the mixing desk. Finally, remember that only the speaker/cab sound is under review, not the amp tone. Results vary immensely depending on your amp of choice. For example, you may not dig the vintage-flavored tube distortion heard here, but connecting a modern, high-gain amp would instantly yield modern, high-gain tones.
We'll proceed in ascending order of price.
Torpedo C.A.B. M+
Designed to be the missing link between a guitarist’s rig and the PA or audio interface, this pedal is loaded with 32 Two Notes cabinets, eight power amps, eight mics, and eight rooms to choose from.
Red Box 5
This handy DI and speaker simulator offers powerful control over your sound, including cabinet size and cab tightness, and a means to avoid miking up your rig onstage.
OmniCabSim Deluxe
Designed for guitarists who want to create their own cabinet response settings, rather than rely on presets, this pedal allows players to define their sound and get an accurate reproduction of it when gigging or recording.
Iridium
This pedal has mathematically modeled every aspect of three iconic tube amps, and includes nine of Iridium’s IR cabinets with 24-bit 96 kHz resolution for the entire 500 milliseconds of its impulse responses.
CabClone IR
Featuring two banks of eight Mesa cab presets for 16 proprietary IRs and the ability to upload third-party IRs, this pedal also functions as a tone-rich, silent practice tool with a set of headphones.
Element
With five cabinet simulations, a multi-channel USB-C audio interface, and Bluetooth tech to listen to backing tracks, this pedal was designed with practicality in mind, to empower modern musicians.
Radar
With 30 cab models to choose from and microphone and power-amp simulation ideal for recording or silent practice, this mini can help transform a pedalboard into a complete guitar rig.
Cabzeus
This two-channel cabinet/speaker/miking simulator uses advanced DSP processing techniques coupled with clean and robust circuit designs for minimal noise and optimal headroom.
CabDriVR
Featuring 14 guitar- and bass-cabinet impulse responses and dual inputs and outputs, this emulator also has separate level controls so players can balance each cab’s volume in the mix.
Omni IR
This compact pedal houses 40 legendary guitar and bass cabinet IRs, a 4-band EQ with 12 dB boost/cut, and a hi-res OLED screen for easy operation in any recording or live scenario.