14% price drop

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. When a model is selected, VEnuM™ rewires the nearly the entire tube signal path down to the tone stack 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 active 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 low-noise 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.


  • 3 channel, 6 models per channel, 18 all-tube preamp circuits
  •  “Dual Input” Clean Channel with Bright, Normal and Bridged (jumpered inputs) Modes
  • Crunch and Drive channels feature Bright and Deep voicing switches whose function is unique based on the selected model
  • Two unique tone stacks per model, each with selectable EQ shift
  • Warm LED indicates when vacuum tubes are ready to use 
  • Front and Rear Inputs, ¼” unbalanced outputs and ground lift switch
  • Save and recall 128 custom presets via MIDI
  • FS-3 channel switching footswitch included
  • Audiophile grade components used throughout
Technical Specs
  • Tube Complement: (4) Tung-Sol 12AX7
  • Dimensions: 19" x 3.43" x 14"
  • Weight: 20.5 lbs
  • Warranty: 5 Year Limited

Product Specs

Brand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
Brand Black Widow
Model MGP-1A Modeling Guitar Preamplifier
Categories Microphone Preamps
Made In United States

Accepted Payment Methods

Shipping Policy

Ships from St. Louis, MO, United States to:

Continental U.S.
Europe (Non-EU)
European Union
Everywhere Else

We ship most orders placed before 3pm CST Monday through Friday the same day payment has been approved. Orders placed Saturday-Sunday will ship the following Monday.

All packages are shipped fully insured at no additional charge. We use UPS to ship to the US and Canada, and USPS to ship everywhere else. USPS international rates are far lower, but their tracking system is not always accurate.

All shipping rates do not include VAT, import taxes, or brokerage fees. These are the buyer’s responsibility.

We will only ship to confirmed addresses on your PayPal or Credit Card accounts.

Tax Policies

Taxes are charged in the following regions either by the seller, per their tax policy, or by Reverb as a Marketplace Facilitator:

District of Columbia*
New Jersey*
New Mexico*
New York*
North Carolina*
North Dakota*
Rhode Island*
South Carolina*
South Dakota*
West Virginia*
*Marketplace Facilitator State. Reverb collects tax on the sellers behalf. Learn More

Return Policy

Return Window

This product can be returned within 30 days of receipt.

General Terms

Items must be returned in original, as-shipped condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs unless the item was not received as described.


Buyer receives a full refund in their original payment method less any shipping costs.

Special Conditions

Returned items must be returned in original condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs. Black Widow Audio Designs reserves the right to refuse any return if the item has been damaged, is not returned in new, untouched conditions or is missing original packaging materials, included cords and cables, tubes, etc. Items returned damaged may be subject to a repair charge and restocking fee of 15% at our discretion. Refunds will be initiated once we can verify the condition of the received item. The time it takes for a refund to post to your account may vary based on your bank’s processing times. Please contact us IMMEDIATELY if the item arrives damaged during shipping. If you have any further questions, please contact us; we are happy to help.

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Black Widow Audio Designs

St. Louis, MO, United States
Joined: Oct 2017

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As low as $176/month

Black Widow MGP-1A All-Tube Modeling Guitar Preamplifier
+ $42 Shipping