--- product_id: 43338190 title: "Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single" brand: "electro-harmonix" price: "€ 45.04" currency: EUR in_stock: true reviews_count: 9 url: https://www.desertcart.pt/products/43338190-electro-harmonix-12at7-eh-preamp-vacuum-tube-single store_origin: PT region: Portugal --- # Perfect for guitar amp circuits High-fidelity Twin Triode design Superior dissipation for longer life Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single **Brand:** electro-harmonix **Price:** € 45.04 **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your tone with the tube that pros trust! ## Quick Answers - **What is this?** Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single by electro-harmonix - **How much does it cost?** € 45.04 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/43338190-electro-harmonix-12at7-eh-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 - • **Amp-Ready Versatility:** Seamlessly integrates into guitar amp circuits for that pro-level tone. - • **Twin Triode Powerhouse:** Ideal for driver and reverb circuits, delivering rich, dynamic sound. - • **HiFi-Grade Sound Clarity:** Experience pristine audio with the best 12AT7 choice for high-fidelity setups. - • **Robust Large Plate Format:** Enhanced dissipation outperforms vintage NOS tubes, ensuring durability. - • **Trusted Brand Reliability:** Backed by Electro-Harmonix and New Sensor warranty for peace of mind. ## Overview The Electro-Harmonix 12AT7 EH is a premium single vacuum tube designed for high-fidelity audio and guitar amplifier circuits. Featuring a large plate Twin Triode format, it offers superior heat dissipation compared to vintage NOS tubes, ensuring durability and consistent performance. Perfect for driver and reverb applications, this ECC81 equivalent tube is backed by a 90-day warranty from New Sensor, making it a reliable choice for musicians and audiophiles seeking professional-grade sound enhancement. ## Description Large plate format Twin Triode, ideal for use in driver and reverb circuits. Offers superior dissipation compared to NOS versions of this tube. ## Features - Best 12AT7 choice for HiFi - Also suitable for guitar amp circuits - Single tube - ECC81 equivalent ## Technical Specifications | Specification | Value | |---------------|-------| | Amplifier Type | Tube | | Asin | B01HT8U2BC | | Best Sellers Rank | #43,558 in Musical Instruments (See Top 100 in Musical Instruments) #163 in Guitar Amplifier Tubes | | Brand | Electro-Harmonix | | Customer Reviews | 4.5 4.5 out of 5 stars (99) 4.5 out of 5 stars | | Enclosure Material | Glass | | Global Trade Identification Number | 00683274021768 | | Manufacturer | New Sensor | | Mfr Part Number | 12AT7 EH | | Model Number | 12AT7EH | | Number Of Items | 1 | | Number Of Packs | 1 | | Upc | 683274021768 844632022272 609722128308 846408004888 | | 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 - **Item dimensions L x W x H:** 1 x 1 x 2.75 inches - **Manufacturer:** New Sensor - **Mounting Type:** Surface Mount - **Brand:** Electro-Harmonix - **Number of Channels:** 1 ## Images ![Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single - Image 1](https://m.media-amazon.com/images/I/71uO6qeikSL.jpg) ## Questions & Answers **Q: Why is Mine not working** A: It could be a bad tube or the amp itself. We are more than happy to set up a return if the tube is bad, but we can not verify without testing the tube. We suggest consulting a professional repair tech to verify if the amp is the problem or if the tube is bad. If they conclude that the tube is the issue, get in touch with us to set up a return/exchange. **Q: What are the shipping dimensions of this item?** A: From a web search ... the "mechanical" (NOT shipping) dimensions of the tube are below. However, shipping dimensions would vary depending upon how the supplier decides to package the tube for shipment. It has been my experience that this is inconsistent and nearly impossible to predict. Suppliers typically package based on what will be sufficient to protect the item in transit and what materials they happen to have on hand. So, you might order from the same company 2 times and the shipping materials could be different. I think this question can only be answered by the supplier during the actual order process.MECHANICAL Maximum Overall Dimensions Length 2 3/16 inches Seated Height 1 15/16 inches Diameter 7/8 inches **Q: Would there be further volume reduction if I also replaced the second preamp tube?** A: Since a 12AT7 has only 60% of the gain of a 12AX7 yes it would reduce preamp output and volume at that stage. **Q: Do these work** A: I have this in a Zenith C845 AM/FM radio for over six years and so far it has worked and held up just like an NOS 12AT7. I have had no problems with it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very Cool *by on Reviewed in the United States May 30, 2025* This is a great tube! I bought it to try in a preamp for a warmer acoustic guitar tone, and it really made a difference. Really well made, as expected from Electro Harmonics ### ⭐⭐⭐⭐⭐ great tube! *by on Reviewed in the United States December 31, 2023* These are a good quality tube. EH has always worked well in my amps. Can't say how long it will last since I just installed. ### ⭐⭐⭐⭐⭐ Excelente valvula *by on Reviewed in the United States August 4, 2025* Muy buena valvula si quieres reducir la ganancia y volumen de tu amplificador de guitarra, usandola en V1. ## Frequently Bought Together - Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single - Electro-Harmonix 7025EH Vacuum Tube - JJ Electronics Amplifier Tube (T-12AX7-S-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.pt/products/43338190-electro-harmonix-12at7-eh-preamp-vacuum-tube-single](https://www.desertcart.pt/products/43338190-electro-harmonix-12at7-eh-preamp-vacuum-tube-single) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-08*