---
product_id: 520208297
title: "Ampeg Bass Amplifier Preamp (AMG SGTDI)"
brand: "ampeg"
price: "$26128"
currency: MXN
in_stock: true
reviews_count: 5
category: "Ampeg"
url: https://www.desertcart.mx/products/520208297-ampeg-bass-amplifier-preamp-amg-sgtdi
store_origin: MX
region: Mexico
---

# Ultra-Hi & 3-way Ultra-Lo switches 3-band EQ with sweepable mids SGT circuit with SVT & B15 voicing Ampeg Bass Amplifier Preamp (AMG SGTDI)

**Brand:** ampeg
**Price:** $26128
**Availability:** ✅ In Stock

## Summary

> 🎸 Own the stage and the studio with Ampeg’s ultimate bass tone machine!

## Quick Answers

- **What is this?** Ampeg Bass Amplifier Preamp (AMG SGTDI) by ampeg
- **How much does it cost?** $26128 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/520208297-ampeg-bass-amplifier-preamp-amg-sgtdi)

## Best For

- ampeg enthusiasts

## Why This Product

- Trusted ampeg brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Iconic Ampeg Voices:** Switch effortlessly between SVT and B15 voicings with the advanced Super Grit Technology™ circuit for authentic amp tones.
- • **Compact Powerhouse Rig:** All-in-one preamp and DI with IR Loader/Cab Simulator delivers studio-quality tone without bulky gear.
- • **Precision Tone Sculpting:** Dial in your signature sound with a versatile 3-band EQ featuring sweepable mids for ultimate control.
- • **Dynamic Frequency Control:** Ultra-Hi and 3-way Ultra-Lo switches let you tailor your bass presence and depth to any venue or style.
- • **Practice Without Compromise:** Silent practice mode with USB-C connectivity lets you jam quietly while preserving your family’s peace.

## Overview

The Ampeg AMG SGTDI Bass Amplifier Preamp is a compact, battery-powered analog preamp featuring a 3-band EQ with sweepable mids, an enhanced Super Grit Technology overdrive circuit with authentic SVT and B15 amp voicings, and Ultra-Hi/Ultra-Lo frequency switches. It includes an IR Loader/Cab Simulator for versatile tone shaping and USB-C connectivity for silent practice, making it a complete rig in a pedal-sized package favored by professional bassists.

## Description

The SGT-DI™ preamp and DI features an enhanced Super Grit Technology™ overdrive circuit with SVT® and B15 voices, 3-band EQ with sweepable mids, and an IR Loader/Cab Simulator.

Review: The SGT-DI is an awesome pedal/ preamp that sounds great. Is it the last thing you’ll ever need? Probably not, but if getting started or need an additional to your kit, it’s worth it. B15. I have a ‘66 B-15. It sounds exact. I have used the SGT at gigs with my B-15 so I didn’t have to mess around using a microphone. The overdrive channel is great to give that boost and growl B-15 do when turned up. The preamp gives more accessibility to key tones but maintains the touch sensitivity of the actual amp and tubes. SVT. Super close. It’s a legitimate gripe others have commented that it’s not the “best” but it’s probably top 3. Like the B15 setting all the really great tones are real easy to dial in. The OD circuit makes it grind like a stack. Having the B15 circuit makes the SGT my choice. If you only used SVT. Still my choice. Why? Quiet practice. Plugging my iPad in to quiet practice is huge. I don’t disturb my family, I get yelled at by my wife less, score. I didn’t believe I’d use that function much, but I’ve gotten to where I use it the most! Compressor. Boy this is griped about in other reviews. Not the most “useful” but I use it a lot! As an easy one knob compressor, like an orange squeeze or on board mixing board compressor, 100% worth it. The single knob compressor on the SGT does that sweet one knob thing to give more pop. It’s actually the perfect little add. If you need more, get one of the really nice ones out there. If you “need” the extra compressor features, you need the extra compressor anyway. Overdrive to fuzz distortion. The Grit channel is a huge plus. You may play with it on all the time! I love just a real light OD. It stacks with fuzzes well too. Build quality. I did receive 2 as the first had an issue. The first had a loose connection with the auxiliary input for my iPad and the silent practice. It became obvious early the silent practice was going to be a huge beneficial use. I returned and received a different. Longevity. I worry about longevity of cables going in and out, the way the solder on jacks on anything should give everyone concerned on anything electronic. With soldering experience they are easily fixable if you can find the part. But it’s still a big inconvenience.
Review: Es perfecto, el 810 suena genial y el sgt le da un toque especial además me gusta mucho la perilla de medios le saco mucho provecho

## Features

- The All-In-One Bass Box
- · 3-Band EQ with sweepable mids
- · SGT circuit with SVT and B15 voicing switch
- · Ultra-Hi and 3-way Ultra-Lo switches

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BXBL6QQS |
| Body Material | Metal |
| Color Name | black |
| Connector Type | USB Type-C |
| Customer Reviews | 4.5 4.5 out of 5 stars (63) |
| Date First Available | 28 March 2023 |
| Hardware Interface | USB Type C |
| Item Weight | 907 g |
| Item model number | AMG SGTDI |
| Material Type | Metal |
| Output Wattage | 15 Watts |
| Power Source | Battery Powered |
| Product Dimensions | 31.12 x 17.78 x 11.56 cm; 907.18 g |
| Signal Format | Analog |
| Voltage | 9 Volts |

## Product Details

- **Brand:** Ampeg
- **Colour:** black
- **Item weight:** 907 g
- **Style:** Overdrive
- **Voltage:** 9 Volts

## Images

![Ampeg Bass Amplifier Preamp (AMG SGTDI) - Image 1](https://m.media-amazon.com/images/I/51716YqRamL.jpg)
![Ampeg Bass Amplifier Preamp (AMG SGTDI) - Image 2](https://m.media-amazon.com/images/I/51dTWnrNwjL.jpg)
![Ampeg Bass Amplifier Preamp (AMG SGTDI) - Image 3](https://m.media-amazon.com/images/I/61WQChztlwL.jpg)
![Ampeg Bass Amplifier Preamp (AMG SGTDI) - Image 4](https://m.media-amazon.com/images/I/61XOZS0c1ZL.jpg)
![Ampeg Bass Amplifier Preamp (AMG SGTDI) - Image 5](https://m.media-amazon.com/images/I/61mOv+7v2kL.jpg)

## Questions & Answers

**Q: Does this come with an AC adapter?**
A: Yes, an AC adapter comes with the unit in the box.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***T on 28 December 2024*

The SGT-DI is an awesome pedal/ preamp that sounds great. Is it the last thing you’ll ever need? Probably not, but if getting started or need an additional to your kit, it’s worth it. B15. I have a ‘66 B-15. It sounds exact. I have used the SGT at gigs with my B-15 so I didn’t have to mess around using a microphone. The overdrive channel is great to give that boost and growl B-15 do when turned up. The preamp gives more accessibility to key tones but maintains the touch sensitivity of the actual amp and tubes. SVT. Super close. It’s a legitimate gripe others have commented that it’s not the “best” but it’s probably top 3. Like the B15 setting all the really great tones are real easy to dial in. The OD circuit makes it grind like a stack. Having the B15 circuit makes the SGT my choice. If you only used SVT. Still my choice. Why? Quiet practice. Plugging my iPad in to quiet practice is huge. I don’t disturb my family, I get yelled at by my wife less, score. I didn’t believe I’d use that function much, but I’ve gotten to where I use it the most! Compressor. Boy this is griped about in other reviews. Not the most “useful” but I use it a lot! As an easy one knob compressor, like an orange squeeze or on board mixing board compressor, 100% worth it. The single knob compressor on the SGT does that sweet one knob thing to give more pop. It’s actually the perfect little add. If you need more, get one of the really nice ones out there. If you “need” the extra compressor features, you need the extra compressor anyway. Overdrive to fuzz distortion. The Grit channel is a huge plus. You may play with it on all the time! I love just a real light OD. It stacks with fuzzes well too. Build quality. I did receive 2 as the first had an issue. The first had a loose connection with the auxiliary input for my iPad and the silent practice. It became obvious early the silent practice was going to be a huge beneficial use. I returned and received a different. Longevity. I worry about longevity of cables going in and out, the way the solder on jacks on anything should give everyone concerned on anything electronic. With soldering experience they are easily fixable if you can find the part. But it’s still a big inconvenience.

### ⭐⭐⭐⭐⭐ Review
*by S***O on 27 March 2025*

Es perfecto, el 810 suena genial y el sgt le da un toque especial además me gusta mucho la perilla de medios le saco mucho provecho

### ⭐⭐⭐⭐⭐ Review
*by T***I on 8 July 2025*

Excelente pré-amp, fantástico! Atendeu todas as minhas expectativas e valeu cada centavo investido nele. Pode comprar sem medo, pois irá te surpreender. Super indico!

## Frequently Bought Together

- Ampeg Bass Amplifier Preamp (99-040-4105)
- D'Addario Accessories Guitar Pedal Power Supply - DC 9V Power Cord - 9V Power Supply for Guitar Pedals - Pedalboard Power Supply - PW-CT-9V
- MXR Patch Cable 6 in|15 cm - 3 Pack (3PDCP06)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-10*