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EH 7025 (12AX7 / ECC83 HQ)
Electro-Harmonix has released a low noise, low microphonic version of the 12AX7 that meets all specifications required for the tube to be designated 7025. The original 7025 tube was a 12AX7 that was tested and selected for the lowest noise and microphonics for use in the critical first preamp stages of amplifiers where noise and microphonics could be an issue. In order to ensure that the 7025 specification is consistently met, Electro-Harmonix has redesigned the structure of the 12AX7 and has implemented construction techniques to ensure the absolute lowest noise and microphonics possible. In all samples tested, noise and microphonics could not be detected.
The Electro-Harmonix 7025EH has a mid-range that gives clarity and definition to the sound and a smooth top end for warmth and balance. With these characteristics, along with the exceptionally low noise and low microphonics, the Electro-Harmonix 7025EH will work equally well in vintage and modern high-gain guitar amplifiers, as well as sensitive phono preamps.
The Electro-Harmonix 7025EH has a mid-range that gives clarity and definition to the sound and a smooth top end for warmth and balance. With these characteristics, along with the exceptionally low noise and low microphonics, the Electro-Harmonix 7025EH will work equally well in vintage and modern high-gain guitar amplifiers, as well as sensitive phono preamps.
Safety Information for Vacuum Tubes
For all electrical, electromechanical and mechanical components, the specifications and operating parameters arising from the respective type standard generally apply.
Further information, where available, can be found in the respective data sheets and product descriptions included with the product.
For all electrical, electromechanical and mechanical components, the specifications and operating parameters arising from the respective type standard generally apply.
Further information, where available, can be found in the respective data sheets and product descriptions included with the product.
General Information
- NOT SUITABLE FOR CHILDREN - choking hazard due to small parts
- NOT SUITABLE FOR UNTRAINED PERSONS - danger to life due to high voltages
- The safety and processing requirements applicable to the component must be observed
- CE conformity applies only when installed professionally
- Warranty becomes void in case of improper handling
- The operator is responsible for proper installation
- Local regulations and VDE provisions must be complied with
- Never exceed the rated power
- Never exceed the rated voltages and currents
Required Expertise
- Use of measuring instruments (multimeter, oscilloscope) and evaluation of measurement results
- Safe handling of high voltages (up to 500V and more)
- Reading and understanding circuit diagrams
- Selection of appropriate tools
- Knowledge of electrical components and their characteristics
- First-aid knowledge for electrical accidents
- Knowledge of VDE regulations and safety requirements
Amplifier Tubes
- Hazard due to high voltages
- Hazard due to very high heat generation
- Hazard due to glass breakage
- Hazard due to UV radiation in case of defective tubes
Herstellerinformationen | Manufacturer Information
EU-Wirtschaftsakteur | EU Economic Operator
Tube-Town GmbH, Rumbergring 37, 66969 Lemberg, Germany, info@tube-town.de
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- Electro Harmonix
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- Genalex (Reissue)
- Mullard (Reissue)
EU-Wirtschaftsakteur | EU Economic Operator
Tube-Town GmbH, Rumbergring 37, 66969 Lemberg, Germany, info@tube-town.de
Essential information about customer reviews We do not verify that the published reviews come from such consumers who have actually used or purchased the rated goods or services. All reviews, i.e. positive and negative, are published. No reviews that are unobjective, offensive or unrelated to the product will be published.
- Laurent S., 01/16/2021Top tube to get rid of microphony issue without having to make compromises on the tone. Works perfect in a Friedman Smallbox clone in V1 position.
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