The ABY-HT (hard touch) has a hard click in the switch (only for the driver's feel & not evident through the amp). The ABY-ST (soft touch) has silent soft switches. No pops, no ticks, and no electrocutions, thanks to a Nickel core custom-wound 1:1 transformer that doesn't boost the treble frequencies like the "industry standard" Jensen transformer does, so fuzzes played through the True-Path sound round and distortions don't sound strident.
Using the most advanced 4 opto switching system ever, yet also offering the purest signal.
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