---
product_id: 30376245
title: "VELLEMAN MK171 Voice Changer Kit, 1.5\""
brand: "velleman"
price: "S$252"
currency: SGD
in_stock: true
reviews_count: 13
url: https://www.desertcart.sg/products/30376245-velleman-mk171-voice-changer-kit-1-5
store_origin: SG
region: Singapore
---

# 1.5W max output power Robot voice modulation Adjustable pitch & vibrato VELLEMAN MK171 Voice Changer Kit, 1.5"

**Brand:** velleman
**Price:** S$252
**Availability:** ✅ In Stock

## Summary

> 🎤 Own the mic, morph your vibe!

## Quick Answers

- **What is this?** VELLEMAN MK171 Voice Changer Kit, 1.5" by velleman
- **How much does it cost?** S$252 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/30376245-velleman-mk171-voice-changer-kit-1-5)

## Best For

- velleman enthusiasts

## Why This Product

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

## Key Features

- • **Precision Pitch Control:** Use dedicated pitch buttons to lower or raise your voice with professional-grade accuracy.
- • **Compact & Portable Design:** Small 3” x 1.8” footprint fits perfectly on any desk or stage setup.
- • **Customizable Amplifier Gain:** Boost output volume by modifying the amplifier gain for louder, clearer sound.
- • **Transform Your Voice Instantly:** Switch between robot, vibrato, and pitch-shifted tones for endless creative fun.
- • **Perfect for Social & Creative Play:** Ideal for parties, pranks, recordings, and theatrical performances—stand out in every crowd.

## Overview

The VELLEMAN MK171 Voice Changer Kit is a compact, DIY audio device that lets you modulate your voice with robot effects, vibrato, and pitch adjustments. Featuring a built-in microphone, 1.5W amplifier output, and customizable gain settings, it’s perfect for creative professionals and hobbyists looking to add unique vocal effects to parties, recordings, or performances. Requires soldering and external speaker for full assembly.

## Description

Voice changer Kit 35 sold ER ABLE pieces features: • make your voice sound like a robot • add vibrato effect • use the 'pitch'-buttons and make your voice sound lower or higher • built-in microphone and power amplifier with volume control, just add a speaker • hours of fun! • great for parties, plays, recordings, games, prank Phone calls etc. Specifications: • speaker/line output • on/off switch • Max. Output power: 1.5W (4 ohm) • power supply: 9Vdc/300MA • dimensions: 3.0 inch x 1.8 inch.

Review: Great kit for all experience levels. - This is a great little kit. As stated in many other reviews for this product, you do require a soldering iron and a speaker to assemble this thing fully. The instructions, in my opinion, are excellent. They don't have much words or explanation but they make up for that with their very complete diagrams showing location, orientation, and proper assembly practices. One common problem I've read about this kit is the lack of volume, and while details on preventing this are briefly noted in the instructions, I do see how it could easily be overlooked. First is speaker selection. This circuit is designed for used with either a 4 ohm or 8 ohm speaker, if you use higher resistance speakers (more ohms) then you will get a much quieter output. If you want the most volume possible, pick a 4 ohm as it will give double the Watts of an 8 ohm speaker. Second is the actual amplifier circuit used. This kit uses an LM386 amplifier IC that has a hardware-programmable gain. If you build this kit as specified, it will have a gain of 50. However if you feel that this is insufficient for your particular application, do not place component R10 and instead solder a wire where it should be. By shorting R10, you will increase the gain to a much more substantial 200. (Please note that you MUST put a short in place of R10, if you remove the resistor and leave it open you will get the minimum gain of 20)
Review: IT HAS TO BE SOLDERED- not a ready to go product. - It was unclear on the description that this is just all the parts and needs soldering!! It was for my son's Halloween party, so we weren't able to use it because it was in pieces. Luckily my dad was able to put it together before trick or treat time. Then it was a neat little novelty toy.

## Features

- Make your voice Sound like a Robot
- Add vibrato effect
- Use the 'pitch'-buttons and make your voice Sound lower or higher
- Package Dimensions: 3.302 L x 13.97 H x 7.874 W (centimeters)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EYJJH5G |
| Batteries | 1 9V batteries required. |
| Best Sellers Rank | #242,032 in Electronics ( See Top 100 in Electronics ) #1,018 in Digital Voice Recorders |
| Date First Available | May 10, 2004 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.94 pounds |
| Item model number | 2130731 |
| Manufacturer | VELLEMAN INC. |
| Product Dimensions | 0.98 x 4.76 x 7.87 inches |

## Product Details

- **Brand:** Velleman
- **Compatible Devices:** Personal Computer
- **Hardware Interface:** USB
- **Headphones Jack:** No headphones jack
- **Item Weight:** 1.9 Pounds
- **Memory Storage Capacity:** 16 GB
- **Microphone Form Factor:** Built-In
- **Number of Batteries:** 1 9V batteries required.
- **Product Dimensions:** 3.03"D x 1.81"W x 3.03"H
- **Screen Size:** 1.5 Inches

## Images

![VELLEMAN MK171 Voice Changer Kit, 1.5" - Image 1](https://m.media-amazon.com/images/I/51oIkIllarL.jpg)
![VELLEMAN MK171 Voice Changer Kit, 1.5" - Image 2](https://m.media-amazon.com/images/I/61Q9JAiAAhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great kit for all experience levels.
*by M***L on October 28, 2014*

This is a great little kit. As stated in many other reviews for this product, you do require a soldering iron and a speaker to assemble this thing fully. The instructions, in my opinion, are excellent. They don't have much words or explanation but they make up for that with their very complete diagrams showing location, orientation, and proper assembly practices. One common problem I've read about this kit is the lack of volume, and while details on preventing this are briefly noted in the instructions, I do see how it could easily be overlooked. First is speaker selection. This circuit is designed for used with either a 4 ohm or 8 ohm speaker, if you use higher resistance speakers (more ohms) then you will get a much quieter output. If you want the most volume possible, pick a 4 ohm as it will give double the Watts of an 8 ohm speaker. Second is the actual amplifier circuit used. This kit uses an LM386 amplifier IC that has a hardware-programmable gain. If you build this kit as specified, it will have a gain of 50. However if you feel that this is insufficient for your particular application, do not place component R10 and instead solder a wire where it should be. By shorting R10, you will increase the gain to a much more substantial 200. (Please note that you MUST put a short in place of R10, if you remove the resistor and leave it open you will get the minimum gain of 20)

### ⭐ IT HAS TO BE SOLDERED- not a ready to go product.
*by 4***S on January 10, 2020*

It was unclear on the description that this is just all the parts and needs soldering!! It was for my son's Halloween party, so we weren't able to use it because it was in pieces. Luckily my dad was able to put it together before trick or treat time. Then it was a neat little novelty toy.

### ⭐⭐⭐ Need to augment audio for Halloween project...
*by D***R on August 12, 2015*

The audio quality is not as good as I expected. I did enjoy putting this kit together. I need to augment another audio device for a complex Halloween project. I'll be using it but not as I planned. In fact, I'm looking for an inexpensive device to deploy for multiple Halloween related projects. Any suggestions?

## Frequently Bought Together

- VELLEMAN MK171 Voice Changer Kit, 1.5"
- Portable Voice Amplifier, Towevine Rechargeable Microphone for Teachers, Speaker with Headset and Waistband for Classroom, Singing, Coach, Training, Presentation, Tour Guide
- Lsgoodcare 20PCS 3.5mm 1/8 inch Female Stereo Jack Panel Mount Connector

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-06*