--- product_id: 1459998 title: "Velleman K1803 Universal Mono Pre-Amplifier Kit, Multi-Colour" brand: "velleman" price: "€ 45.77" currency: EUR in_stock: true reviews_count: 13 category: "Velleman" url: https://www.desertcart.at/products/1459998-velleman-k1803-universal-mono-pre-amplifier-kit-multi-colour store_origin: AT region: Austria --- # 50cm cable length for flexible setup 10-30V DC power supply, 10mA Universal mono pre-amp module Velleman K1803 Universal Mono Pre-Amplifier Kit, Multi-Colour **Brand:** velleman **Price:** € 45.77 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate every note with precision power! ## Quick Answers - **What is this?** Velleman K1803 Universal Mono Pre-Amplifier Kit, Multi-Colour by velleman - **How much does it cost?** € 45.77 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/1459998-velleman-k1803-universal-mono-pre-amplifier-kit-multi-colour) ## 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 - • **DIY Audio Upgrade:** Assemble your own pro-grade pre-amp kit and elevate your sound game - • **Plug & Play Power:** Operates efficiently on a low 10-30V DC power supply with minimal current draw - • **Compact & Convenient:** Includes a 50cm cable for easy integration into your audio setup - • **Boost Your Audio Signal:** Amplifies weak input signals for crystal-clear sound - • **Versatile Audio Applications:** Perfect as a microphone pre-amplifier or level corrector ## Overview The Velleman K1803 Universal Mono Pre-Amplifier Kit is a compact, versatile audio pre-module designed to amplify weak input signals. Operating on a low 10-30V DC power supply with just 10mA current consumption, it includes a 50cm cable for flexible installation. Ideal for microphone pre-amplification or level correction, this kit empowers audio enthusiasts and professionals to enhance sound clarity and performance with a hands-on DIY approach. ## Description Product Description Velleman kit was developed as pre-module for a number of audio applications where the input signal is too weak. APPLICATIONS as a microphone pre-amplifier or for level correction. Power supply: 10-30vdc/10mA. Cable length: 50 cm. Set Contains: 1 x Universal Mono Pre-Amplifier Review: Perfect for our purpose! - I did a lot of kit and scratch-built stuff many years ago, so I'm not new to this. However, it has been a long long time, and my soldering did need a little brushing up. The design was brilliantly done; values of the resistors and capacitors were kept very simple, and the sequence of installation was a very good idea. We are using it as a line booster between a telephone headset output and a computer sound system for listening to Kingdom Hall meetings, since my wife is unable to attend most of our meetings in person. I settled on a single 9-volt battery (toggle switched) and have so much gain that I can hardly turn the pot. I would recommend this little board to anybody. Review: It's a good and cheap way to practice soldering and observe basic ... - It's a good and cheap way to practice soldering and observe basic circuit signal flow. Mine did not work the way it was supposed to, but I still got the credit I needed for my physics lab. It's not a preamplifier you would put in a professional recording studio, but it's a good starting place if you plan to advance your circuitry knowledge! ## Features - Pre-Module for Audio Applications: Kit was developed as pre-module for a number of audio applications - Signal Amplification: Used where the Input signal is too weak - Versatile Usage: Used as a microphone pre-amplifier or for level correction - Cable Specification: Cable length: 50cm - Power Requirements: Power supply operates on 10-30VDC with 10mA current consumption for reliable performance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002Z82XU | | Antenna Location | Audio Application | | Best Sellers Rank | #171,867 in Musical Instruments ( See Top 100 in Musical Instruments ) #296 in Microphone Preamps #3,908 in Computer Graphics Cards | | Brand | Velleman | | Built-In Media | 1 x Velleman Universal Mono Pre-Amplifier Kit | | Compatible Devices | Desktop | | Customer Reviews | 4.2 out of 5 stars 84 Reviews | | Global Trade Identification Number | 05410329018030 | | Graphics Card Interface | PCI-Express x16 | | Graphics Processor Manufacturer | NVIDIA or AMD | | Included Components | 1 x Velleman Universal Mono Pre-Amplifier Kit | | Item Type Name | Universal Mono Pre-Amplifier Kit | | Item Weight | 0.27 g | | Manufacturer | Velleman | | Mfr Part Number | K1803 | | Model Number | K1803 | | Number of Items | 1 | | Recommended Uses For Product | Audio Application | | Unit Count | 1 Count | | Video Output Interface | DisplayPort , HDMI | | Video Processor | NVIDIA or AMD | ## Product Details - **Brand:** Velleman - **Graphics Processor Manufacturer:** NVIDIA or AMD - **Included Components:** 1 x Velleman Universal Mono Pre-Amplifier Kit - **Recommended Uses For Product:** Audio Application - **Video Output Interface:** DisplayPort, HDMI ## Images ![Velleman K1803 Universal Mono Pre-Amplifier Kit, Multi-Colour - Image 1](https://m.media-amazon.com/images/I/61M2AqR7SpL.jpg) ![Velleman K1803 Universal Mono Pre-Amplifier Kit, Multi-Colour - Image 2](https://m.media-amazon.com/images/I/61dLWfQtQ7L.jpg) ![Velleman K1803 Universal Mono Pre-Amplifier Kit, Multi-Colour - Image 3](https://m.media-amazon.com/images/I/61zJ30Uf-4L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect for our purpose! *by C***K on February 3, 2013* I did a lot of kit and scratch-built stuff many years ago, so I'm not new to this. However, it has been a long long time, and my soldering did need a little brushing up. The design was brilliantly done; values of the resistors and capacitors were kept very simple, and the sequence of installation was a very good idea. We are using it as a line booster between a telephone headset output and a computer sound system for listening to Kingdom Hall meetings, since my wife is unable to attend most of our meetings in person. I settled on a single 9-volt battery (toggle switched) and have so much gain that I can hardly turn the pot. I would recommend this little board to anybody. ### ⭐⭐⭐⭐ It's a good and cheap way to practice soldering and observe basic ... *by A***R on July 9, 2017* It's a good and cheap way to practice soldering and observe basic circuit signal flow. Mine did not work the way it was supposed to, but I still got the credit I needed for my physics lab. It's not a preamplifier you would put in a professional recording studio, but it's a good starting place if you plan to advance your circuitry knowledge! ### ⭐⭐⭐⭐⭐ This kit is super, it was very simple to assemble and it worked beyond my expectations !!! *by J***E on September 4, 2021* To my surprise it draws less than ONE MILL when operating with my Icom 756. The gain is easily adjusted to the necessary value with the pot. on the board. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/1459998-velleman-k1803-universal-mono-pre-amplifier-kit-multi-colour](https://www.desertcart.at/products/1459998-velleman-k1803-universal-mono-pre-amplifier-kit-multi-colour) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-10-12*