Preserves overall tonality but gives "in your face" sound
I replaced 12AX7 to Warm Stone in AMT SS-20 guitar preamp and Warm Audio EQP-WA equalizer. And I like the sound in both cases! In SS-20 it gives me more modern, less compressed, aggressive, "in your face" sound. For EQP-WA the sound became tighter. Also I passed some audio files through EQP-WA before and after the replacement and performed blind tests on friends and they chose Warm Audio version.
This "tube" built very well and I replaced original 12AX7 without any problems.
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Does not really replace the sound of an empty lamp
The integrated electronics (without "vacuum tube") can basically do the job of a vacuum tube (or lamp), with the same pinning and same supply voltage? ? But the arrival of the distortion has nothing in common with distortion. Of a lamp.
Maybe useful if you're below the distortion threshold? But as this threshold is fast, I do not see too much interest!
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