Installed it on the carvin first (DC135), works like a breeze!!! It is the first double action (dive/pull) trem stabilizer that I know of that does not require intrusive permanent modification to the guitar. Took me about 5-10 mins to set it up! Sustain improved marginally. Next Target Ibanez uv70p. It is so good I am thinking of ordering another!
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I tried it and on the Ibanez UV70p (7 strings). This installation was even easier. A total of 5 minutes. This time not even screwing / unscrewing the claw!!!! Unbelievable! The sustain became more "consistent" and predictable without being increased on average. (which strengthens my belief that sustain is 99% dependent on wood alone). The tuning stability from very good became perfect. Ultimately, however, the result did not make me keep it there, meaning that the sound was already good anyway, and stability was not a problem from the start. I was hoping to increase sustain at the 24th fret which from 3-3.5 seconds to 5+ (I know I ask too much), but didn't happen. So I took it off and will either put back in the Carvin or in the Kramer (FR) or the strat.
Generally I think that for the money (20EUR) compares well to the competition! Too bad there is no company behind it, because IMHO it really is a clever design, the man (an elderly gentleman named Alexandr Chromov) has a patent on this in Russian patent registry.
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