General
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Music-DSP Source Archive
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Tube Sheets and schematics
Vintage
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Triodeel
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Neve and Teletronix
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Fairchild 670 stereo limiter
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Pultec EQ
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Pro Audio Equipment
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Hammond Organs
Guitar
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Schematic Heaven
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GuitarFX
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Duncan's Amp
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Stompboxes
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Geo's effects
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Aron Nelson's Stompbox
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Effectronix stompboxes