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Electro-Harmonix 12AX7
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Electro-Harmonix 12AX7
Voivod K Voivod K
Published on 04/01/10 at 03:05
This original lamp tubait my head Peavey 6505 +, ie, 6 preamp tubes!
The sound and the gain are really good because this lamp is pretty neutral in terms of the sound spectrum, and its dynamics is known to be relatively good. It is brighter and much more nervous than JJ ECC83 for example, other reference material. Very good lamp therefore found in a large number of products (Vox, Marshall, Peavey etc..). Since this lamp is widely used in general, it is very hard to give an objective opinion on it. But ...

I changed 3 of the 6 lamps (become microphonic), namely by Tung-Sol 12AX7 input (V1), a JJ ECC83 in V6 (clear channel) and another Electro-Harmonix 12AX7 in V3 (loop effects).

First note: Tung-Sol 12AX7 crushes everything in its path in terms of gain. HE is a good lamp for those who want to gain correct without taking off the wallpaper from the volume pot exceeds 5 / 10. In addition, the Tung-Sol is an ultra-bright compared to the EH. Conclusion: HE is actually a lamp with a good gain and a fairly neutral sound.

Second point: the clean sound is much more velvety, meaning that the JJ ECC83 is softer than the EH, with a sound spectrum more pronounced in the midrange. The EH is definitely a lamp that combines several traits without success in a particular field.

It's a perfect light for its neutrality musical, it respects the sound of the instrument and allows for a very correct gain. That is why it is used in a large number of amps because it produces a very standard. Ideal for who wants to change a lamp into an amp without radically changing the sound.

Furthermore, very low microphonics, no background noise and high reliability. Moreover, it is a very affordable product (14.50 € on www.passion-audio-tube.com). A must.