Where to Buy
Black Widow Audio Designs' products are sold direct to musicians nearly anywhere in the world.
To order, simply choose a power cord for your region and click the "Add to Cart" button.
The MGP-1A Modeling Guitar Preamp comes with a 30-day money-back satisfaction guarantee. This allows you to try it safely in your own environment, which is the only way to tell if a piece of gear is right for you.
If you don't like it, for any reason, just contact us for a RMA number and ship it back with all of the original packaging. Once we verify it is in the original condition, we will refund the full purchase price, less shipping. You don't even have to tell us why (but we encourage you to so we can continue to improve). The full terms can be found here.
The MGP-1A comes with a limited 5-year warranty from the date of purchase (90 days for tubes, cables and fuses).
MGP-1A Modeling Guitar Preamp
Modeling in the Analog Domain
The MGP-1A is an all-tube, all-analog modeling preamplifier featuring 18 pristine models of the best guitar amplifiers in history. At the MGP-1A's core lies our patented VEnuM™ modeling engine. VEnuM™ uses only vacuum tubes and analog components to accurately capture the breakup, harmonics, gain and filtering that make the originals sound the way they do. The feel and response change with the settings you apply and the way you play, just like you were playing through the real thing.
Each of the 18 models has a host of tone shaping features like Bright and Deep controls to alter the treble and bass voicings, two unique tone stacks per model, and an EQ shift to re-voice the active tone stack. These extra controls both model tone shaping features found on the originals or help mimic the tone of amplifiers closely related to the selected model.
The MGP-1A is designed to be extremely easy to use with dedicated controls for every function. It has also been designed to be versatile. Being a preamp, it can slide into any setup and work with the gear you already own.
The MGP-1A features extremely low-noise power supplies and tube circuitry for studios and recording. For the stage, the MGP-1A is MIDI equipped with the ability to store and recall up to 128 presets via your existing MIDI controller. For those without a MIDI enabled rig, the included FS-3 footswitch takes care of your channel switching needs.
Inside the MGP-1A are 18 stunningly accurate all-tube, all-analog preamp models of the most desired guitar amps in history. The onboard models and voicing options have been deliberately chosen to maximize the unit's tonal spread, allowing you to dial in the sound of amplifiers beyond the core 18 models. When used along with an IR-based speaker simulator, the tonal options are nearly endless.
Explore the Models
Click the MGP-1A's controls below for an in-depth look at the VEnuM™ modeling engine.
1. Choose a Channel
2. Choose a model
3. Change EQ
From the start, the MGP-1A was designed not only to be a modeler, but to outperform even the best tube amplifiers. Ultra-low noise, active power supplies for great note articulation and dynamics, advanced tube protection circuitry ensures a long tube lifespan, and high quality parts and construction throughout make the MGP-1A a device you can count on for years to come.
Our patented VEnuM™ modeling technology is the first to offer all-tube, all-analog guitar amp modeling. There's no DSP in sight.
VEnuM™ is the result of YEARS of study, math and research focused on the question: "What makes a guitar amplifier sound the way it does?" This research allowed us to accurately capture and reproduce the sound and feel of the best guitar amplifiers and create the most exciting modeling device for guitar players to date.
The MGP-1A uses our MOSh™ MOSFET Regulated Heater circuitry to provide the tube heaters with pure, elevated DC power, which drastically reduces noise levels.
In typical amplifiers, the tube's heaters see stresses from inrush current at power on, cathode poisoning in standby, and voltage strains in cathode follower circuitry. A part of the MGP-1A's integrated low-noise power supplies, MOSh™ protects your tubes against these stresses, increasing tube life and reliability.
Down to Hook Up
When the MGP-1A is added to a tube rig, you drastically increase the number tones at your disposal, all while keeping that gooey tube warmth intact. It plays well with pedals too.
Shown above with a rackmount tube power amp, you could easily plug the MGP-1A into your existing tube head's line input or effect return.
Adding the MGP-1A to your modeling rig will be an instant upgrade in sound quality, feel and realism over the amp models you currently use. The digital modeler can take over for effects, amplifier and speaker simulation.
The four cable method (4CM) allows you to use the digital modeler to add stomp-box models before routing the signal to the MGP-1A. The output of the MGP-1A is then sent back to the digital modeler for any post-preamp processing you desire.
In the studio, the MGP-1A eliminates the need to haul, setup and maintain those old vintage classics, and it's low noise design means less time cleaning up hiss, hum and buzz.
Connect the rear input jack to a patchbay for reamping. This input will be disconnected automatically when a guitarist plugs his guitar or pedalboard into the front input. The MGP-1A's low-impedance tube-driven output is more than capable of driving speaker simulators, FX units, audio interfaces, or the console's line inputs.
MGP-1A Modeling Guitar Preamp
Click to get acquainted
For studio or live use where easy access is required. Plugging in here override's the MGP-1A's rear input automatically.
Channel Selector Switches
The large, illuminated channel selector switches allow you to easily see which channel is active in low-light environments.
Where the magic happens. Unleash the power of the MGP-1A by choosing the active model for each channel.
The Mod switches act like a second bank, conjuring up an alternative model to one selected.
Clean Channel Input Section
Like many vintage amps, the MGP-1A's clean channel is a dual-input design with Bright and Normal channels. The Input switch virtually 'plugs in' to either channel, indicated by the LED next to the Bright and Normal knobs. When both LED's are lit, the channels are 'jumpered' together for a touch more gain and overdrive.
Bright and Deep Voicing Switches
Adjust the high and low frequency voicing to taste. These controls behave differently depending on the active model and mod combination to recreate features on the originals or to nail the tone of similar amplifiers.
EQ Voicing Switches
Each model has 4 unique EQ voicings. Eq Shift shifts a targeted frequency. Alt EQ swaps in a completely different tone stack model.
Store and recall up to 128 presets with a MIDI foot controller or DAW.
Let's you know the MGP-1A's tubes are warm and ready to sound their best.
Not your typical standby. A high-voltage electronic switch deactivates the tube B+ along with all non-essential auxiliary power, and the tube heaters are run at a reduced voltage to keep them ready to go during set breaks.
- Series: Eclipse Series
- Model: MGP-1A Modeling Guitar Preamp
- Tube Compliment: 4 - Tung-Sol 12AX7
- Warranty: 1 Year, limited
- Presets: 128 user presets via MIDI
- Running Presets: 9, auto-saved by model
- Input Impedance: 1 Meg Ω
- Output Impedance: ≈ 710 Ω
- Input Voltages: 120V / 240V
- Enclosure: Thick steel, white powder coat
- Height: 3.438 in. (8.73 cm)
- Width: 19 in. (48.26 cm)
- Depth: 14 in. (35.56 cm)
- Weight: 20.5 lbs (9.3kg)