i just completed the pedal PCB Zapper (Systech Harmonic Energizer) and mounted it ina 1590B, after also building Aion effects version. They are very similar (sound almost exactly the same) although i personally think the Aion version sounds a little better albeit requires a larger 125B enclosure.
here's a couple of pics of both of them:
Aion version on the left, pedalPCB version on the right
PedalPCB version on the left, Aion version of the right:
PedalPCB version pics:
Before mounting it in a the enclosure i was getting some rumbling feedback at the deepest setting so i replaced the 10uf cap (C2) with a 1uf one like the Aion version and that solved it. to get some of the lows back, i replaced the zapper's C8 (100n) witht the Aion's (1u). They do sound nearly identical although the Aion version just has a bit more "fullness/roundness" to it's sound.
i still own a Systech Overdrive that i bought in 1975 and cloned it a few years ago, but also added Baxandall treble and bass controls to it (which IMO, makes it sound ALOT better):
so now i have both of their pedals in 1590B form (with all top jacks):
and by the way, all of them have relayed true bypasses.
here's a couple of pics of both of them:
Aion version on the left, pedalPCB version on the right
PedalPCB version on the left, Aion version of the right:
PedalPCB version pics:
Before mounting it in a the enclosure i was getting some rumbling feedback at the deepest setting so i replaced the 10uf cap (C2) with a 1uf one like the Aion version and that solved it. to get some of the lows back, i replaced the zapper's C8 (100n) witht the Aion's (1u). They do sound nearly identical although the Aion version just has a bit more "fullness/roundness" to it's sound.
i still own a Systech Overdrive that i bought in 1975 and cloned it a few years ago, but also added Baxandall treble and bass controls to it (which IMO, makes it sound ALOT better):
so now i have both of their pedals in 1590B form (with all top jacks):
and by the way, all of them have relayed true bypasses.
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