--- product_id: 3310794 title: "12AX7EH Preamp Vacuum Tube, Single" brand: "electro-harmonix" price: "€ 37.15" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.it/products/3310794-12ax7eh-preamp-vacuum-tube-single store_origin: IT region: Italy --- # ECC83/7025 compatible Ultra low noise spiral filament High gain Twin Triode 12AX7EH Preamp Vacuum Tube, Single **Brand:** electro-harmonix **Price:** € 37.15 **Availability:** βœ… In Stock ## Summary > 🎢 Elevate your amp’s voice with the tube pros swear by! ## Quick Answers - **What is this?** 12AX7EH Preamp Vacuum Tube, Single by electro-harmonix - **How much does it cost?** € 37.15 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/3310794-12ax7eh-preamp-vacuum-tube-single) ## Best For - electro-harmonix enthusiasts ## Why This Product - Trusted electro-harmonix brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Trusted Quality:** Backed by Electro-Harmonix’s legacy and a 90-day warranty for peace of mind. - β€’ **Compact & Durable:** Lightweight metal enclosure built to withstand rigorous gigging and studio sessions. - β€’ **Crystal-Clear Tone:** Experience ultra low noise with a unique spiral filament that eliminates hum for pristine sound. - β€’ **High Gain Powerhouse:** Delivers detailed, musical tone with high gain Twin Triode short plate design. - β€’ **Pro-Grade Versatility:** Perfect drop-in replacement for all 12AX7/ECC83 circuits, compatible with guitar and bass amps. ## Overview The Electro-Harmonix 12AX7EH Preamp Vacuum Tube is a high gain, low noise replacement tube designed for guitar and bass amplifiers. Featuring a unique spiral filament to eliminate hum, it offers a detailed, musical tone and is compatible with all 12AX7/ECC83 circuits. Lightweight and durable, it’s a trusted choice for musicians seeking professional sound quality and reliability. ## Description High gain Twin Triode short plate format, with detailed, musical tone. Most popular replacement for all circuits requiring 12AX7/ECC83 types. ## Features - Ultra low noise thanks to unique spiral filament which eliminates cathode-to-filament induced hum (common on amplifiers that use AC on the filaments) - Best all-around choice & best value - Single tube - ECC83/7025 equivalent ## Technical Specifications | Specification | Value | |---------------|-------| | Amplifier Type | Tube | | Asin | B0002M72JS | | Best Sellers Rank | #26,269 in Musical Instruments (See Top 100 in Musical Instruments) #63 in Guitar Amplifier Tubes | | Brand | Electro-Harmonix | | Color | Black | | Compatible Devices | Guitar, Bass | | Customer Reviews | 4.7 4.7 out of 5 stars (315) 4.7 out of 5 stars | | Enclosure Material | Metal | | Global Trade Identification Number | 00683274020099 | | Item Weight | 9.07 g | | Manufacturer | New Sensor | | Mfr Part Number | 12AX7EH | | Model Name | Electro-Harmonix 12AX7EH Preamp Vacuum Tube | | Model Number | 12AX7EH | | Number Of Items | 1 | | Number Of Packs | 1 | | Power Source | Corded Electric | | Sound Profile | Musical, high-quality sound profile | | Unit Count | 1 Count | | Upc | 133587597974 410000095447 846408004918 683274020099 844632022289 410000095386 735757050588 610370783832 | | Warranty Description | New sensor will credit or replace, at its discretion, a vacuum tube product that fails to operate due to defects in materials or workmanship for a period of 90 days from date of purchase. This applies only to original purchasers who have bought their product from amazon directly (and not through a third party seller). Replaced products will then be warranted for the unexpired portion of the original warranty term. | ## Product Details - **Brand:** Electro-Harmonix - **Color:** Black - **Compatible Devices:** Guitar, Bass - **Item Weight:** 0.02 Pounds - **Material:** Metal ## Images ![12AX7EH Preamp Vacuum Tube, Single - Image 1](https://m.media-amazon.com/images/I/71AZ8f9PslL.jpg) ## Questions & Answers **Q: Will this work for a vox vt30 valvetronix?** A: It's the standard preamp tube used in just about every tube guitar amp. it's also the same as an ECC83... look up the tube currently in your amp, and google for cross reference tubes for other "models" that will work... generally speaking, any of 12AX7, 12AT7, and 12AY7 will work in place of each other... they will also work in place of an ECC83... hope this helps... **Q: Will this work for audible illusion modulus 2 pre amp** A: No. You need the 6DJ8/6922 tubes for this amp. **Q: Does this vacumm tube work with the presonus preamps?** A: Yes, if your preamp requires a 12AX7 preamp tube then this will work well. **Q: I have a crate gt80 non dsp amp. will this work in it?** A: It looks like your amp takes one 12AX7 and two 12AU7's. This Electro-harmonix 12AX7 will work and you can find the 12AU7 on our page. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great sound. *by on Reviewed in the United States May 25, 2026* This Russian made 12AX7 tube was installed in my Ibanez TSA15h amplifier in the first preamp slot, replacing an old J/J 12AX7 tube.Installation was straightforward and it seated properly without any issues. Once installed, the amp powered up normally and operated as expected.In terms of sound, the change is noticeable in a good way. The amp feels a bit more responsive and has a slightly smoother overall character compared to the older J/J 12AX7 tube I replaced. Nothing extreme or dramatic, but a clear improvement in clarity and feel when playing. The distortion is a little better with the EHX over J/J. I also run a 12AT7 in preamp slot 2 so I get a slightly cleaner tone.Build quality on the tube itself appears solid. It arrived in its own box with a layer of bubble wrap, which was good initial protection. However, Amazon shipped it in a soft bag instead of a box, which was not ideal for something fragile like vacuum tubes. Fortunately, it still arrived undamaged.So far it has been stable during use with no unwanted noise, microphonics, or intermittent behavior.Overall, this is a reliable replacement preamp tube that performs as expected and works well in my amplifier. It is a straightforward upgrade or replacement part that does its job without any complications.10/10 it’s worth every penny. EHX always hits it out of the park with their products. ### ⭐⭐⭐⭐⭐ what a surprise *by on Reviewed in the United States December 29, 2016* This is the best sounding preamp tube currently in production, full stop. I don't know what they're doing differently with these because it looks like all the other ones, but it has way better bass response, and overall more lively frequency response and just much wider clarity. I was really surprised because Electro-Harmonix tubes don't have the best reputation in terms of tone or consistency. I've since replaced almost all of my preamp tubes with these, and man oh man what a difference. If you're not happy with how your amp sounds, put one of these in at least V1 and you should IMMEDIATELY be able to tell the difference.Caveat is: I have no idea how they sound in an overdrive channel. I don't have any amps that switch between clean and dirty. I would have to imagine it'd sound good there too. They are also really good PI tubes, I've got one in my Music Man (the ones that have the tube power section, but solid state preamp section, but with a tube PI) and it woke the thing up in ways I did not expect. ### ⭐⭐⭐⭐⭐ Brought my new amp to life *by on Reviewed in the United States February 11, 2017* Just got a used Jet City JCA22H amp head that is in perfect condition but the tubes were not very good. Someone had installed a real mixed bag of not only brands but types as well. Two of them had gone microphonic. So i ordered 3 of these EHX tubes and holy crap what a difference. They're high gain no doubt which is what a 22H needs (it's a Soldano desgn) but these are really musical throughout and are never shrill or fizzy. They tightened up the bottom end a little and gave the mids a little push too. I used a vintage USA made Sylvania 12AT7 for the PI and a Tung-sol 5751 for the effects loop and this amp really came to life. I couldn't be more pleased. I'm going to order a duet of their EL84 power tubes next to see if they're as good. ## Frequently Bought Together - Electro-Harmonix 12AX7EH Preamp Vacuum Tube, Single - JJ Electronics Amplifier Tube (T-EL84-JJ) - Tung-Sol 12AX7 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/3310794-12ax7eh-preamp-vacuum-tube-single](https://www.desertcart.it/products/3310794-12ax7eh-preamp-vacuum-tube-single) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-08-20*