Electro-Harmonix 12AX7
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12AX7, Guitar Amp Tube from Electro-Harmonix.

kaoslord 05/22/2013

Electro-Harmonix 12AX7 : kaoslord's user review

«  good light, very rich »
4

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This is a lamp with a gain quite expensive (comparable to Tunsol 12AX7)
a little ground in the mids, it sounds a little "vintage".
I think it sounds great in position V1 low gain, it adds wealth to clear his (nice bass + treble crystalline).

on the other hand, it goes to the gain (> 3 on my amp) it begins to saturate VERY quickly and the sound management of low frequencies, which is fairly typical of Russian lamps.
So, in my amp (100w Jetcity) saturated sound loses the definition (but what a potato!).
I therefore prefer to V2 position (lamp used only by the saturation of the amplifier channel), the grain is very "grainy" and the distortion quite elevated.

To summarize, a good lamp cheap. But beware, if your bass amp has already beautiful, it will be a little too heavy. on the other hand, if you have a feeble or too loud amp, it apporterta gain and depth to your sound.