--- product_id: 3734228 title: "JJ Electronics 12AU7 / ECC82 Preamp Vacuum Tube" brand: "british audio" price: "R$417" currency: BRL in_stock: true reviews_count: 8 category: "British Audio" url: https://www.desertcart.com.br/products/3734228-jj-electronics-12au7-ecc82-preamp-vacuum-tube store_origin: BR region: Brazil --- # Reliable JJ Electronics build Smooth gain control Enhanced clean headroom JJ Electronics 12AU7 / ECC82 Preamp Vacuum Tube **Brand:** british audio **Price:** R$417 **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your amp’s voice with smooth, pedal-perfect clarity! ## Quick Answers - **What is this?** JJ Electronics 12AU7 / ECC82 Preamp Vacuum Tube by british audio - **How much does it cost?** R$417 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/3734228-jj-electronics-12au7-ecc82-preamp-vacuum-tube) ## Best For - british audio enthusiasts ## Why This Product - Trusted british audio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Master Your Tone:** Tame excessive gain for perfectly balanced sound without harsh distortion. - • **Boost Clean Headroom:** Modestly increases clean headroom on low watt amps for versatile sound shaping. - • **Lightweight & Compact:** Easy to install and fits seamlessly into your existing amp setup. - • **Trusted Craftsmanship:** Manufactured by JJ Electronics, known for durability and consistent audio quality. - • **Pedal-Ready Performance:** Optimizes your amp for cleaner, pedal-friendly overdrive and distortion tones. ## Overview The 12AU7 / ECC82 Preamp Vacuum Tube by JJ Electronics is a premium, reliable tube designed to reduce excessive gain and enhance clean headroom in guitar amplifiers. Ideal for musicians seeking smoother distortion and improved pedal compatibility, this lightweight, compact tube delivers consistent, high-quality sound performance trusted by professionals. ## Description 12AU7 / ECC82 Preamp Vacuum Tube Review: Great tubes - JJ tubes are my preferred tube manufacturer these days. They are reliable, well made, reasonably priced, and they sound very good imho. This preamp tube is a good choice if your amplifier has more gain than you need and you are looking to take it down a notch from what a 12AX7 is giving you. You can also use this tube to modestly increase clean headroom on some low watt amps. I used it to bring down the gain on an overdrive pedal that used a 12ax7. I bought this tube through desertcart with the vendor Musician's Friend. When the tube did not arrive, they sent a replacement via 2nd day mail. The original eventually made it's way to me and they told me to keep it- Thanks, Musician's Friend :) Review: Tamed the beast! - As many other reviewers have commented this is exactly what I wanted for my Behringer Tube Monster! I had a Groove Tube 12AX7 left over from a tube swap in my amp and replaced the stock tube in the monster with it. The JJ sounded good with my Telecaster, really good! However, I have a Stratocaster with Texas Specials and the hotter windings were just that too hot for the Tube Monster. There was zero smooth creamy overdrive! Just grind to super grind! Great! If that’s what your looking for. Enter the 12AU7. With the Strat there is at least a smooth transition from 0 to 1 1/2 then it starts getting gritty, in a good way! With the Tele.....Heaven!! Seriously, think Hotel California and Joe Walsh’s tone! Easily achieved! I do use a 2amp power supply for the Tube Monster because the 12AU7 although a lower output tube, does require more power than a 12AX7. ## Features - 12AU7 / ECC82 Preamp Vacuum Tube ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002M728O | | Additional Features | Lightweight | | Age Range Description | Adult | | Antenna Location | Audio Monitoring | | Audio Driver Type | Balanced Armature Driver | | Best Sellers Rank | #19,925 in Musical Instruments ( See Top 100 in Musical Instruments ) #55 in Guitar Amplifier Tubes | | Bluetooth Version | 4 | | Brand | british audio | | Brand Name | british audio | | Built-In Media | Cable | | Cable Features | Detachable | | Color | Black | | Compatible Devices | Desktops, laptops, mobile phones, tablets, music production equipment, smart speakers, TVs, car audio systems, phones, game consoles, motorcycles | | Connectivity Technology | Wired | | Control Method | Remote | | Control Type | Remote Control | | Customer Package Type | FFP | | Customer Reviews | 4.7 out of 5 stars 259 Reviews | | Ear Placement | Over Ear | | Earpiece Shape | Round | | Enclosure Material | Faux Leather | | Form Factor | Circumauricular | | Frequency Range | 20 Hz - 20,000 Hz | | Headphone Folding Features | Circumauricular | | Headphone Jack | 3.5 mm Jack | | Headphones Ear Placement | Over Ear | | Impedance | 16 Ohms | | Is Autographed | No | | Manufacturer | JJ ElectronICs | | Model Name | T-12AU7-JJ | | Model Number | T-12AU7-JJ | | Noise Control | None | | Number of Items | 1 | | Specific Uses For Product | Music | | UPC | 844632022074 | | Unit Count | 1.0 Count | | Water Resistance Level | Not Water Resistant | | Wireless Technology | Bluetooth | ## Product Details - **Brand:** JJ ElectronICs - **Color:** Black - **Ear Placement:** Over Ear - **Form Factor:** Circumauricular - **Impedance:** 16 Ohms ## Images ![JJ Electronics 12AU7 / ECC82 Preamp Vacuum Tube - Image 1](https://m.media-amazon.com/images/I/6192XRwcpRL.jpg) ## Questions & Answers **Q: 9 pin?** A: Yes, this tube has 9 pins. **Q: Can these tubes be used in a vintage Vibro Champ?** A: Read through a few articles about your vintage Vibro Champ, and it looks like the consensus is that this tube would work better for the V1 position. V2 would be a 12AX7, V3 6V6, and V4 5Y3GT. It is my understanding the 12AU7 has less gain. You could try a few different tubes in the pre gain to see what you think. **Q: I assume 12 AU 7 is two tubes in one obviously maintains stereo sepeartion Common cathode which is grounded normally anyway ?** A: To be precise, the 12AU7 is two independent triodes in a single tube. Like any other electronic component, these can be used in all sorts of applications, limited only by the circuit designers imagination and ingenuity. They can by used in audio and RF circuits... These could be used in a stereo design, but they are not limited to that application. The cathodes are not common between each section, and depending on the circuit design may operate at some potential other than ground. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great tubes *by C***E on December 6, 2012* JJ tubes are my preferred tube manufacturer these days. They are reliable, well made, reasonably priced, and they sound very good imho. This preamp tube is a good choice if your amplifier has more gain than you need and you are looking to take it down a notch from what a 12AX7 is giving you. You can also use this tube to modestly increase clean headroom on some low watt amps. I used it to bring down the gain on an overdrive pedal that used a 12ax7. I bought this tube through Amazon with the vendor Musician's Friend. When the tube did not arrive, they sent a replacement via 2nd day mail. The original eventually made it's way to me and they told me to keep it- Thanks, Musician's Friend :) ### ⭐⭐⭐⭐⭐ Tamed the beast! *by W***B on November 26, 2019* As many other reviewers have commented this is exactly what I wanted for my Behringer Tube Monster! I had a Groove Tube 12AX7 left over from a tube swap in my amp and replaced the stock tube in the monster with it. The JJ sounded good with my Telecaster, really good! However, I have a Stratocaster with Texas Specials and the hotter windings were just that too hot for the Tube Monster. There was zero smooth creamy overdrive! Just grind to super grind! Great! If that’s what your looking for. Enter the 12AU7. With the Strat there is at least a smooth transition from 0 to 1 1/2 then it starts getting gritty, in a good way! With the Tele.....Heaven!! Seriously, think Hotel California and Joe Walsh’s tone! Easily achieved! I do use a 2amp power supply for the Tube Monster because the 12AU7 although a lower output tube, does require more power than a 12AX7. ### ⭐⭐⭐⭐⭐ Electronics *by L***E on September 2, 2025* Good quality ## Frequently Bought Together - JJ ElectronICs 12AU7 / ECC82 Preamp Vacuum Tube - JJ Electronics Amplifier Tube (T-12AX7-S-JJ) - JJ Electronics Amplifier Tube (T-12AT7-JJ) --- ## 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.com.br/products/3734228-jj-electronics-12au7-ecc82-preamp-vacuum-tube](https://www.desertcart.com.br/products/3734228-jj-electronics-12au7-ecc82-preamp-vacuum-tube) --- *Product available on Desertcart Brazil* *Store origin: BR* *Last updated: 2026-05-13*