---
product_id: 327990512
title: "Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits"
brand: "kuuleyn"
price: "5166 kr"
currency: ISK
in_stock: true
reviews_count: 11
category: "Kuuleyn"
url: https://www.desertcart.is/products/327990512-tube-amplifier-kit-diy-tube-preamp-kit-tube-preamp-diy
store_origin: IS
region: Iceland
---

# 8x 470μF capacitors for ultra-clean power DIY kit for hands-on custom assembly 6J1 vacuum tube preamp for warm analog sound Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits

**Brand:** kuuleyn
**Price:** 5166 kr
**Availability:** ✅ In Stock

## Summary

> 🎶 Build your vibe, amplify your soul — DIY tube magic awaits!

## Quick Answers

- **What is this?** Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits by kuuleyn
- **How much does it cost?** 5166 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/327990512-tube-amplifier-kit-diy-tube-preamp-kit-tube-preamp-diy)

## Best For

- kuuleyn enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Sleek:** Slim 5.12 x 3.94 inch board fits effortlessly into your creative workspace
- • **Noise-Free Power:** Eight 470μF capacitors deliver crystal-clear, hum-free audio performance
- • **Pure Analog Warmth:** 6J1 vacuum tube preamp filters digital harshness for rich, natural sound
- • **Custom-Build Experience:** Assemble your own amplifier and own the process from soldering to sound
- • **Plug & Play Flexibility:** Compatible with standard 12V AC transformers—no special plugs needed

## Overview

This Kuuleyn DIY Tube Amplifier Kit features a 6J1 vacuum electron tube preamp and eight 470μF capacitors for clean, warm analog sound with minimal noise. Designed for hands-on assembly, it connects easily to standard 12V AC power sources and delivers a rich audio experience that filters out digital harshness. Compact and FCC-certified, it’s perfect for audiophiles and creative professionals seeking to customize their sound setup.

## Description

Buy Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits: Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great value for your money!! - Outstanding! My love for kit building started in 1963, when I was young and out to prove that a woman could do anything. Not being overly domestic, I quickly developed a love for soldering. I've soldered on stained glass...built an Heathkit stereo FM receiver, a small FM radio, and now this pre-amp. It took a day to build this pre-amp, and the end result is awesome. Coupled with an inexpensive amp I bought from desertcart and a couple of small speakers, the sound is amazing!!! Although there were no instructions, the pcb was well marked so no written instructions were needed. If you're looking for a fun project, I highly recommend buying this kit. You won't be disappointed.
Review: Good kit, product picture a little misleading - First off the plastic case is sold separately which was a slight bummer. I did end up buying one. I tried running it initially off DC 12v which is what most power adapters are. Was quiet and distorted. Figured out I needed 12v AC and got the correct adapter and it worked. The 2 best cheap mods I have found: Either replacing R14 and R19 with 100ohm resistors or just soldering a 220 ohm resistor on the underside of those supplied two resistors. This slightly opens up the sound stage and raises the volume some. Replacing C10 and C12 with 10uf caps or just bridging the originals with 10uf caps does really help the bass response like another review said. Also getting a matched pair of GE tubes helps improve the sound over the cheap ones supplied. This will cost you about as much as the kit though. With a nice set of headphones this little preamp does sound quite good. That resistor mod to R14/R19 really helped give the volume I wanted on my headphones. They are 40ohm speakers and I doubt you would get near the needed volume on any headphones of much higher resistance.

## Features

- 【Funtion】: This vacuum tube amplifier can connect the 6J1 tube pre-amp between sound source and amplifier, it will effectively filter digital flavor, the music and human voice will be relatively good.
- 【Eight 470uf Capacitor Filter】: Eight 470UF capacitor filter is very clean, excellent power system to no hum, filaments are powered with DC 12V and need to be connected in series in order to reduce noise.
- 【High Frequency And Low Proof】: The eight 470UF capacitors included in the DIY tube amplifier kit have very clean filtering, and the power system is excellent and noise-free. The filament is powered by DC 12V and needs to be connected in series to reduce noise.
- 【Assemble Yourself】: This diy amplifier kit comes in parts so you can assemble them together by yourself, enjoy the process of building your own tube amplifier.
- 【Easy To Use】: This vacuum tube amplifier uses a DC 5.5*2.1 socket and an AC 12V transformer. You can also use an AC 12V transformer. No plug is needed, just solder the power cord to the circuit board.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08Z3C5YXP |
| Best Sellers Rank | #75,445 in Electronics ( See Top 100 in Electronics ) #465 in Audio Component Amplifiers |
| Brand | Kuuleyn |
| Date First Available | March 16, 2021 |
| Item Weight | 2.89 ounces |
| Item dimensions L x W x H | 5.12 x 3.94 x 0.98 inches |
| Item model number | Kuuleynga4ktp5v7w881 |
| Manufacturer | Kuuleyn |
| Material | Electronic Components, Circuit Board Materials |
| Maximum Supply Voltage | 12 Volts (AC) |
| Minimum Supply Voltage | 12 Volts (AC) |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Product Dimensions | 5.12 x 3.94 x 0.98 inches |
| Specification Met | FCC |
| Supply Current | 0.8 Amps |
| Voltage | 12 Volts (AC) |

## Product Details

- **Item dimensions L x W x H:** 5.12 x 3.94 x 0.98 inches
- **Manufacturer:** Kuuleyn
- **Maximum Supply Voltage:** 12 Volts (AC)
- **Minimum Supply Voltage:** 12 Volts (AC)
- **Voltage:** 12 Volts (AC)

## Images

![Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits - Image 1](https://m.media-amazon.com/images/I/41CZevJ3bjL.jpg)
![Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits - Image 2](https://m.media-amazon.com/images/I/41Xm5pr5VYL.jpg)
![Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits - Image 3](https://m.media-amazon.com/images/I/514t6r6PIhL.jpg)
![Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits - Image 4](https://m.media-amazon.com/images/I/515b3K3asfL.jpg)
![Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits - Image 5](https://m.media-amazon.com/images/I/51KVCmg0Q9L.jpg)

## Questions & Answers

**Q: Does this come with the acrylic case shown in the photos?**
A: No, acrylic case not included

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great value for your money!!
*by M***Y on April 30, 2025*

Outstanding! My love for kit building started in 1963, when I was young and out to prove that a woman could do anything. Not being overly domestic, I quickly developed a love for soldering. I've soldered on stained glass...built an Heathkit stereo FM receiver, a small FM radio, and now this pre-amp. It took a day to build this pre-amp, and the end result is awesome. Coupled with an inexpensive amp I bought from Amazon and a couple of small speakers, the sound is amazing!!! Although there were no instructions, the pcb was well marked so no written instructions were needed. If you're looking for a fun project, I highly recommend buying this kit. You won't be disappointed.

### ⭐⭐⭐⭐ Good kit, product picture a little misleading
*by J***W on November 5, 2023*

First off the plastic case is sold separately which was a slight bummer. I did end up buying one. I tried running it initially off DC 12v which is what most power adapters are. Was quiet and distorted. Figured out I needed 12v AC and got the correct adapter and it worked. The 2 best cheap mods I have found: Either replacing R14 and R19 with 100ohm resistors or just soldering a 220 ohm resistor on the underside of those supplied two resistors. This slightly opens up the sound stage and raises the volume some. Replacing C10 and C12 with 10uf caps or just bridging the originals with 10uf caps does really help the bass response like another review said. Also getting a matched pair of GE tubes helps improve the sound over the cheap ones supplied. This will cost you about as much as the kit though. With a nice set of headphones this little preamp does sound quite good. That resistor mod to R14/R19 really helped give the volume I wanted on my headphones. They are 40ohm speakers and I doubt you would get near the needed volume on any headphones of much higher resistance.

### ⭐⭐⭐⭐⭐ A true DIY delight.
*by D***R on December 10, 2025*

Haven't soldered it up yet but looks like a great kit with quality components. You really want a soldering station, desoldering tool meter and schematic following. Very nice kit

## Frequently Bought Together

- Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits
- Enclosure Protection Parts Kit Tube Preamp Box, Vacuum Tube Preamp Box, for 6J1 Valve Preamp 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.is/products/327990512-tube-amplifier-kit-diy-tube-preamp-kit-tube-preamp-diy](https://www.desertcart.is/products/327990512-tube-amplifier-kit-diy-tube-preamp-kit-tube-preamp-diy)

---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-01-25*