--- product_id: 182098882 title: "Korg - Nu:Tekt HA-S Nutube Headphone Amplifier Kit" brand: "korg" price: "FREE" currency: EUR in_stock: false url: https://www.desertcart.nl/products/182098882-korg-nu-tekt-ha-s-nutube-headphone-amplifier-kit store_origin: NL region: Netherlands --- # Headphone Amplifier Authentic Sound Battery Powered Korg - Nu:Tekt HA-S Nutube Headphone Amplifier Kit **Brand:** korg **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🎶 Elevate Your Sound Game with DIY Delight! ## Quick Answers - **What is this?** Korg - Nu:Tekt HA-S Nutube Headphone Amplifier Kit by korg - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/182098882-korg-nu-tekt-ha-s-nutube-headphone-amplifier-kit) ## Best For - korg enthusiasts ## Why This Product - Trusted korg brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Build Your Own:** Craft your unique audio experience with ease! - • **Compact Design:** Perfectly portable at just 108g for on-the-go listening. - • **USB Connectivity:** Seamlessly connect to your devices for versatile use. - • **Intermediate Level Fun:** Engage your DIY skills while enjoying superior sound. - • **Authentic Vacuum Tube Sound:** Immerse yourself in rich, warm audio quality. ## Overview The Korg Nu:Tekt HA-S Nutube Headphone Amplifier Kit allows you to build your own headphone amplifier, delivering the beloved authentic vacuum tube sound. With a compact design and USB connectivity, this kit is perfect for audiophiles and DIY enthusiasts alike, weighing only 108g and designed for intermediate skill levels. ## Description Product Description The Korg Nu:Tekt HA-S Nutube Headphone Amplifier Kit is a pristine, compact sound amplifier you build yourself.No soldering needed, you can put the Korg Nu:Tekt HA-S Nutube Headphone Amplifier Kit together even if you're completely new to DIY gear. What's more, it's easy and fun Now it's your chance to enjoy the authentic vacuum tube sound loved by audiophiles. Equipped with an NFB (Negative Feedback) switch, the HA-S headphone amplifier allows you to choose between high fidelity, clean sound or the warmer, harmonically rich sound you expect from a vacuum tube. You can further modify the sound of the Korg HA-S with the two included OP amp options for the output. You can install the MUSE01 for premium audio or the industry standard NJM4580. What's more, these can be replaced easily so you can really customise the Korg HA-S headphone amplifier to your own exact liking. With the circuit diagrams readily available, advanced users can easily customise the HA-S amplifier even further. Directions Assembly and use instructions included (English language not guaranteed) P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Manufacturer's Description A Pristine, Compact Sound Amplifier You Build YourselfThe HA-S is a Nutube-equipped DIY Headphone amp kit that will let you enjoy the highest quality audio anywhere. No soldering is required, so even if you are new to the world of DIY, you will be able to assemble the HA-S to add a warm, analogue tube-driven signal boost to any sound source in no time!Build your own Headphone amplifierThis DIY HA-S kit allows you to build your very own Headphone amplifier in an easy and fun way, without any soldering needed. Not only that, it provides the authentic vacuum tube sound that audiophiles know and love.Built-in NutubeNutube is a new and revolutionary fully analogue vacuum tube developed by KORG INC. The same as a conventional vacuum tube, generating the response and same rich harmonic characteristics of conventional vacuum tubes in a more compact, stable and energy-efficient way. The transparent case of the HA-S delivers a glimpse into this technology; allowing the glow of the tube to be visible at all times.The filament of the Nutube is powered by a DC to DC converter, which consumes less electric current and thus allows for a longer battery life than other vacuum tube equipped amplifiers. The design is so efficient that the HA-S can drive the Nutube with a line voltage of 26 V using only two A4 batteries, for a rich and authentic vacuum tube sound.Sound possibilitiesThe HA-S has a special NFB (Negative Feedback) switch, that allows you to choose from a high fidelity clean and pristine sound, or a warmer, more harmonically rich sound as expected from a vacuum tube. For further sound modification, we have included two OP amp options for the output: the premium audio oriented "MUSES01" and the industry standard “NJM4580”, both from JRC. These can be easily replaced so even the most purist audiophiles will be able to customize and adapt the sound of their HA-S to heir heart’s content. For advanced users who want to customize their amplifier even more, the circuit diagrams are readily available, making it really easy to change discrete components and make your own and unique headphone amp matching your desired tone and performance -, the possibilities are endless!SpecificationsVacuum Tube: Nutube 6P1Connections: INPUT/OUTPUT stereo mini-jackControls: volume, internal NFB (Negative Feedback) switchOutput impedance: 10Ω recommended load15Ω or morePower:2 alkaline AAA batteriesAutonomy: approx. 9 hoursDimensions (W x D x H):111 × 65 × 29mmWeight：110g (without batteries)Tools required: Precision screwdriver (Philips head No. 0, No. 1. flathead 2.4mm), Wrench (2 sided, 10mm wide)(Included items: manual See more ## Features - Build your very own Headphone amplifier in an easy and fun way - Provides the authentic vacuum tube sound that audiophiles know and love - Nutube is constructed with an anode, grid and filament - Operates as a complete triode tube, effectively generating the response - Delivers a glimpse into this technology ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B083VJ2PK2 | | Audio Sensitivity (in Decibels) | 20 Decibels | | Battery Weight | 108 Grams | | Best Sellers Rank | 429 in Headphone Amplifiers | | Brand Name | KORG | | Colour | beige | | Compatible Devices | Smartphone, Tablet, Music Player | | Control Type | Button Control | | Customer Reviews | 4.5 4.5 out of 5 stars (75) | | Fit Type | body-worn | | Headphone Folding Features | Wearable Unit | | Included Components | manual | | Item Type Name | Headphone Amplifier | | Item Weight | 213 Grams | | Manufacturer | KORG | | Material | Plastic | | Model Name | Nu:Tekt | | Model Number | HA-S | | Noise Control | None | | Number of Batteries | 1 Unknown batteries required. | | Number of Items | 1 | | Outer Material | Plastic | | Part Number | HA-S | | Power Source | Battery Powered | | Product Style | HA-S Headphone Amplifier | | Product Warranty | 1 year limited warranty. | | Rechargeable Batteries Included? | No | | Recommended Uses For Product | audio amplification for headphone use | | Software Update Supported to Date | unknown | | Special Features | Authentic tube sound | | Strap Type | Over Ear Hook | | Unit Count | 1.0 count | ## Product Details - **Brand:** KORG - **Colour:** beige - **Material:** Plastic - **Model name:** Nu:Tekt - **Style:** HA-S Headphone Amplifier ## Images ![Korg - Nu:Tekt HA-S Nutube Headphone Amplifier Kit - Image 1](https://m.media-amazon.com/images/I/61ObF0tUtSL.jpg) ## Available Options This product comes in different **Style** options. ## Frequently Bought Together - Korg - Nu:Tekt HA-S Nutube Headphone Amplifier Kit - Korg - SQ-CABLE6 - 75cm Mini Jack Patch Leads with Two Adaptors - Pack of 6 - Mixed Colours - Novation Circuit Tracks: Groovebox Sequencer With Synth Tracks, MIDI Tracks And Drum Tracks Electronic Music Making --- ## 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.nl/products/182098882-korg-nu-tekt-ha-s-nutube-headphone-amplifier-kit](https://www.desertcart.nl/products/182098882-korg-nu-tekt-ha-s-nutube-headphone-amplifier-kit) --- *Product available on Desertcart Netherlands* *Store origin: NL* *Last updated: 2026-11-15*