- Tremolow PCB – Schaller Harmonic Tremolo – Rullywow DIY Pedal PCB Store
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- 1977 Schaller TR-68 Black > Effects | Rivington Guitars
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- Guitar Effect Pedals - Parabola Solid State Tremolo | Mass Street Music
- Tremolo Showdown]Boss Mooer Toadworks Schaller - YouTube
- 1977 Schaller TR-68 Black > Effects | Rivington Guitars
- Pedal | Reverb