---
product_id: 195456583
title: "3Pcs AD828 Stereo Dynamic Microphone Preamplifier Board Pickup Module DC 3.8V-15V MIC Preamp Module"
brand: "acxico"
price: "$16.85"
currency: USD
in_stock: true
reviews_count: 8
category: "Acxico"
url: https://www.desertcart.us/products/195456583-3pcs-ad828-stereo-dynamic-microphone-preamplifier-board-pickup-module-dc
store_origin: US
region: United States of America
---

# Ultra-sensitive piezoelectric ceramic for string instruments Compact 2.5x1.6cm size, ultra-small footprint Wide DC 3.8V-15V low-voltage operation 3Pcs AD828 Stereo Dynamic Microphone Preamplifier Board Pickup Module DC 3.8V-15V MIC Preamp Module

**Brand:** acxico
**Price:** $16.85
**Availability:** ✅ In Stock

## Summary

> 🎤 Elevate your sound game with precision preamp power — don’t let your music blend in!

## Quick Answers

- **What is this?** 3Pcs AD828 Stereo Dynamic Microphone Preamplifier Board Pickup Module DC 3.8V-15V MIC Preamp Module by acxico
- **How much does it cost?** $16.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/195456583-3pcs-ad828-stereo-dynamic-microphone-preamplifier-board-pickup-module-dc)

## Best For

- acxico enthusiasts

## Why This Product

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

## Key Features

- • **Power Smart:** Operates seamlessly on low voltage (3.8-15V) with AD828 op amp chip, perfect for portable setups.
- • **Customizable Gain:** Adjustable onboard resistor (5k-150k) lets you dial in the perfect amplification for your unique sound.
- • **Compact & Discreet:** Tiny 0.98x0.63 inch board fits effortlessly into any instrument rig or DIY audio project.
- • **Precision Sound Capture:** Piezoelectric ceramic tech isolates solid vibrations, slashing environmental noise for crystal-clear audio.
- • **Dual-Channel Flexibility:** Two-channel design lets you power with a single lithium battery and customize input for zero crosstalk interference.

## Overview

The Acxico 3Pcs AD828 Stereo Dynamic Microphone Preamplifier Board is a compact, dual-channel preamp module designed for low-voltage operation (3.8-15V). Featuring a sensitive piezoelectric ceramic element, it effectively reduces environmental noise and self-excitation whistling, making it ideal for string instruments like guitars and erhus. Its ultra-small size and customizable gain resistor provide flexible integration and precise sound amplification for professional and DIY audio enthusiasts.

## Description

Note: The on-board resistor R5 is adjusted by the magnification. If the magnification is not suitable, the resistance of R5 can be adjusted. It can be selected from 5k to 150k. The larger the resistance, the higher the magnification. If the plug-in resistor is used, the original chip resistor can be removed, and the plug-in resistor is soldered to the reserved pad on both ends of the original chip resistor. We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Package Includes: 3pcs

Review: Variable voltage regulator - Very easy hook up 3 wires in out and ground.
Review: They don’t work. - I ordered a tree peace set got one item twice. Seller gave me a refund. But the one peace I have doesn’t work. Yes put together correctly. I know electronics. So no money lost thanks to refund from seller. Thank you.

## Features

- The piezoelectric ceramic piece is sensitive to the sound wave vibration transmitted by the solid, and is not sensitive to the acoustic vibration of the gas, which can effectively reduce the environmental noise and avoid the whistling caused by the self-excitation. Can be used for guitar, erhu and other musical instruments.
- Ultra-small volume dynamic microphone preamplifier board,two-channel design,suitable for a single lithium battery-powered,using AD828 fever op amp chip,suitable for low voltage power supply (3.8-15V)
- If you only used one channel,the other channel needs to short-circuit the input with GND,To avoid interference with the signal crosstalk.
- Working voltage:DC3.8V-15V.This microphone amplifier board without power regulator circuit,can only use the battery or linear power supply,can not use switching power supply,otherwise there will be interference.
- Size:2.5x1.6cm/0.98x0.63inch

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B081YPCQHC |
| Best Sellers Rank | #23,308 in Musical Instruments ( See Top 100 in Musical Instruments ) #40 in Microphone Preamps |
| Color Name | 3PCS |
| Customer Reviews | 3.8 3.8 out of 5 stars (51) |
| Date First Available | November 25, 2019 |
| Item Weight | 0.317 ounces |
| Package Dimensions | 4.8 x 3.11 x 0.47 inches |

## Images

![3Pcs AD828 Stereo Dynamic Microphone Preamplifier Board Pickup Module DC 3.8V-15V MIC Preamp Module - Image 1](https://m.media-amazon.com/images/I/61KTNP7MbuL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: does this circuit have dc blocking caps?**
A: I don't know since I have never seen a schematic for this product.   Why not, just assume 
none were provided and install them external to the board .... just to be safe rather than sorry  !

**Q: Can this be used with an electret mic?**
A: YES,   but only as far as for amplification.  You will need to come up with the  voltage
to be applied to the Mike Element.  Might I mention that his board has no easy means of gain adjustment.  I think there are other Pre-Amplifier boards that provide the voltage to supply the element. and pads to solder on adjustment resistors to select gain.

**Q: What is the input impedance**
A: Impedance is not mentioned,
check out the Velleman  K-1803  which was my second purchase.  mono pre-amp.  Works like a champ !

**Q: How do I verify operation? I have tried two different boards with two different microphones. I am not getting any output.**
A: my has a heat sink under 
not all the board work the same
waith till i get mine and try to tell a is wirwd

## Customer Reviews

### ⭐⭐⭐⭐⭐ Variable voltage regulator
*by R***G on January 27, 2026*

Very easy hook up 3 wires in out and ground.

### ⭐ They don’t work.
*by T***N on February 15, 2025*

I ordered a tree peace set got one item twice. Seller gave me a refund. But the one peace I have doesn’t work. Yes put together correctly. I know electronics. So no money lost thanks to refund from seller. Thank you.

### ⭐⭐⭐⭐⭐ Sounds great with the high speed amp chip installed.
*by T***I on May 22, 2021*

Nice sounding amplifier, used it in an acoustic guitar with a piezo sensor. Easy to change the gain by changing r5 for one channel, and r7 for the other.... gain is r5/r6, and r7/r8. Installed is 100k and 2.2k. Maintain the 2.2k and change the 100k. Has a voltage gain of 45, and a db gain of 33...

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-08*