--- product_id: 327990512 title: "Musical Fidelity Tube Amplifier & Preamp Board - 6J1 Vacuum Tube, Headphone Amp Kit" brand: "kuuleyn" price: "VT7587" currency: VUV in_stock: true reviews_count: 13 category: "Kuuleyn" url: https://www.desertcart.vu/products/327990512-musical-fidelity-tube-amplifier-and-preamp-board-6j1-vacuum-tube store_origin: VU region: Vanuatu --- # 6J1 vacuum tube for warm, rich audio 8x 470μF capacitors for ultra-clean power DIY assembly for hands-on mastery Musical Fidelity Tube Amplifier & Preamp Board - 6J1 Vacuum Tube, Headphone Amp Kit **Brand:** kuuleyn **Price:** VT7587 **Availability:** ✅ In Stock ## Summary > 🎶 Build the sound that sets you apart — DIY tube warmth, no compromises! ## Quick Answers - **What is this?** Musical Fidelity Tube Amplifier & Preamp Board - 6J1 Vacuum Tube, Headphone Amp Kit by kuuleyn - **How much does it cost?** VT7587 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/327990512-musical-fidelity-tube-amplifier-and-preamp-board-6j1-vacuum-tube) ## 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 - • **Noise-Free Power:** Eight 470μF capacitors deliver crystal-clear filtering and hum-free performance. - • **Pure Analog Warmth:** 6J1 vacuum tube preamp filters digital harshness for smooth, natural sound. - • **Compact & Versatile:** Surface mount design fits neatly into your custom audio rig or headphone setup. - • **Plug & Play Simplicity:** Uses standard DC 5.5*2.1 socket and AC 12V transformer for easy power setup. - • **Build Your Own Audio Legacy:** Complete DIY kit lets you solder and assemble your personalized tube amplifier. ## Overview The Kuuleyn DIY Tube Amplifier Kit features a 6J1 vacuum electron tube preamp with eight 470μF capacitors for superior noise filtering and power stability. Designed for hands-on assembly, it connects easily via a DC 5.5*2.1 socket and 12V AC transformer, delivering warm, analog audio enhancement ideal for audiophiles and DIY enthusiasts seeking to elevate their sound experience. ## Description Product description Great for 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. Features 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. Coupling capacitor is electrodeless electrolytic capacitor with high frequency and low resistance. Please Note Using DC 5.5*2.1 socket and AC 12V transformer, you can also use AC 12V transformer without plug, just need to weld the power cord onto the circuit board. This kit comes in parts so you can assemble them together by yourself, enjoy the process of building your own tube amplifier. Specifications ## 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 | #100,645 in Electronics ( See Top 100 in Electronics ) #648 in Audio Component Amplifiers | | Brand Name | Kuuleyn | | Customer Reviews | 3.8 out of 5 stars 44 Reviews | | Item Dimensions | 5.12 x 3.94 x 0.98 inches | | Item dimensions L x W x H | 5.12 x 3.94 x 0.98 inches | | Manufacturer | Kuuleyn | | Material Type | PCB, tube bases, and materials of 6J1 tubes | | Maximum Supply Voltage | 12 Volts (AC) | | Minimum Supply Voltage | 12 Volts (AC) | | Model | Kuuleynga4ktp5v7w881 | | Mounting Type | Surface Mount | | Number of Channels | 2 | | Part Number | Kuuleynga4ktp5v7w881 | | 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 ![Musical Fidelity Tube Amplifier & Preamp Board - 6J1 Vacuum Tube, Headphone Amp Kit - Image 1](https://m.media-amazon.com/images/I/71JVI4O9v3L.jpg) ![Musical Fidelity Tube Amplifier & Preamp Board - 6J1 Vacuum Tube, Headphone Amp Kit - Image 2](https://m.media-amazon.com/images/I/71edF5KiHYL.jpg) ![Musical Fidelity Tube Amplifier & Preamp Board - 6J1 Vacuum Tube, Headphone Amp Kit - Image 3](https://m.media-amazon.com/images/I/71Nzg-9a4HL.jpg) ![Musical Fidelity Tube Amplifier & Preamp Board - 6J1 Vacuum Tube, Headphone Amp Kit - Image 4](https://m.media-amazon.com/images/I/81Rjlu6xYTL.jpg) ![Musical Fidelity Tube Amplifier & Preamp Board - 6J1 Vacuum Tube, Headphone Amp Kit - Image 5](https://m.media-amazon.com/images/I/61-ogcjuIBL.jpg) ## Questions & Answers **Q: Does this come with the acrylic case shown in the photos?** A: No, acrylic case not included ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***N on April 12, 2026* ### ⭐⭐⭐ Review *by P***S on June 8, 2024* ### ⭐⭐⭐⭐ Review *by J***W on November 5, 2023* ## 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.vu/products/327990512-musical-fidelity-tube-amplifier-and-preamp-board-6j1-vacuum-tube](https://www.desertcart.vu/products/327990512-musical-fidelity-tube-amplifier-and-preamp-board-6j1-vacuum-tube) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-09*