Ampeg SGT-DI Preamp and DI Pedal

SKU: AM990404105 MFR: 99-040-4105
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Key Features

  • Ampeg SGT-DI preamp: Experience legendary Ampeg tone with low noise performance.
  • Shape your bass sound: Sculpt your ideal tone with the versatile EQ and gain controls.
  • Studio-quality sound: Capture pristine audio with this preamp's exceptional sound quality.
  • Perfect for recording: Use as a DI for direct input, ensuring a clean, balanced signal.
  • Versatile connectivity: Connect to amps, mixers, and interfaces via XLR and 1/4" outputs.
  • Road-ready build: Rugged construction ensures reliability for stage and studio use.
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Special Order?Estimated to Ship: 08/10/2025
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Ampeg SGT-DI Specifications

  • Signal-To-Noise Ratio

    Headphone Out: 106dB (20Hz-20kHz A-Weighted, Preamp and SGT disabled)

  • Maximum Gain

    Preamp Out: 57dB (@ 1kHz, EQ flat, Pre-amp and SGT enabled, maximum Grit, maximum Volume)
    Headphone Out: 57dB (@ 1kHz, EQ flat, Pre-amp and SGT enabled, maximum Grit, maximum Volume, Cab Mode disabled)
    XLR Out: 37dB (@ 1kHz, EQ flat, Pre-amp and SGT enabled, maximum Grit, maximum Volume, Cab Mode disabled)

  • Power Requirements

    External: 9V DC @ 500mA, center-negative (use the included adapter)

  • Dimensions (H x W x D)

    2.5 x 7.4 x 4.9" (65 x 189 x 126mm) (With side panel knobs recessed, no rubber feet applied)
    2.5 x 7.9 x 4.9" (65 x 201 x 126mm) (With side panel knobs extended, no rubber feet applied)

  • Weight

    1.9 lbs (850g)

  • UPC Code

    614252332316

About Ampeg SGT-DI

The SGT-DI preamp and DI gives modern bassists an entire rig in a single stompbox. It delivers an enhanced Super Grit Technology overdrive circuit featuring iconic Ampeg SVT and B15 voices, versatile 3-band EQ now with sweepable Mid circuit, Ultra-Hi and 3-way Ultra-Lo switches, a variable compressor, and an Aux /Headphone section. Plus! Introducing the first IR Loader/Cab Simulator from Ampeg. Choose from three classic factory cabs or up to three cabs of your own by using the free Ampeg IR Loader application.

What is an IR and why should I care
A speaker cabinet impulse response or "IR" is essentially a digital audio snapshot of a cabinet that captures the acoustic characteristics of that specific cab, along with the signal chain used to record it-microphone(s), preamp(s), cable, etc.-and the room in which it was recorded. IRs allow you to "virtually" switch between different cab sounds in the same way you would swap physical cabs.

SGT-DI is the first physical Ampeg product featuring IRs and IR loading.
SGT-DI comes with six preloaded Ampeg factory cab IRs, three of which may be replaced with your own:
• Cab Mode includes Ampeg Heritage B-15, Heritage SVT-410HLF, and SVT-810 Squareback IRs
• User Mode includes overwritable Ampeg SVT-112AV, SVT-210AV, and SVT-212AV IRs

The Cab Level control enables you to adjust and save the amount of cab IR sound in your signal. The IR Off Mode bypasses the IR circuitry altogether.

VOL/COMP
This is your preamp level control. Oh, and we decided to throw in a slammin' compressor.

Caution, Cabs On Board
Introducing the first IR Loader/Cab Simulator from Ampeg. Choose from three Ampeg factory cabs or three of your own using the Ampeg IR Loader application (visit ampeg. com/software for details).

Cab Level
Independent level control of your full-resolution IRs. Keep an eye out for that red peak LED to avoid clipping.

All-New Sweepable Mid
We took that 5-way Mid switch you know and love and gave you all the frequencies in between!

SGT Level
This is your SGT Overdrive level control. Tweak wisely.

Two Iconic SGT Voices
With just a flick of a switch you can tap into the tube magic of the hailed B-15 or the titanic SVT.

Super Grit Technology
Use the independent Grit and Level controls to go from a clean boost to mild tube-amp saturation to all-out monster SVT grind.

Ampeg SGT-DI Features

  • 3-Band EQ with sweepable mids
  • SGT circuit with SVT and B15 voicing switch
  • Onboard IR Loader/Cab Simulator
  • Ultra-Hi and 3-way Ultra-Lo switches
  • Variable 10:1 compressor
  • Free Ampeg IR Loader application
  • Aux /Headphone section
  • Balanced XLR and 1/4" line outputs

Warranty Information

This product has a limited warranty of 12 months.

Product Documents

User Manual

Key Features

  • Ampeg SGT-DI preamp: Experience legendary Ampeg tone with low noise performance.
  • Shape your bass sound: Sculpt your ideal tone with the versatile EQ and gain controls.
  • Studio-quality sound: Capture pristine audio with this preamp's exceptional sound quality.
  • Perfect for recording: Use as a DI for direct input, ensuring a clean, balanced signal.
  • Versatile connectivity: Connect to amps, mixers, and interfaces via XLR and 1/4" outputs.
  • Road-ready build: Rugged construction ensures reliability for stage and studio use.

What's in the box:

  • Ampeg SGT-DI Preamp and DI Pedal
  • USB-C Cable
  • Adhesive Rubber Feet
  • Power Supply
  • Quick Start Guide
  • Ampeg 1 Year Limited Warranty