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Seventh Circle Audio

High quality DIY and fully assembled microphone preamplifiers and other professional audio recording gear

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SCA 500 Series Documentation

N72-500 BOM

N72-500 Schematic

N72-500 Assembly Instructions

N72-500 Overlay

A12-500 BOM

A12-500 Schematic

A12-500 Assembly Instructions

A12-500 Overlay

J99-500 BOM

J99-500 Schematic

J99-500 Assembly Instructions

J99-500 Overlay

C84-500 BOM

C84-500 Schematic

C84-500 Assembly Instructions

C84-500 Overlay

T15-500 BOM

T15-500 Schematic

T15-500 Assembly Instructions

T15-500 Overlay

S90-500 BOM

S90-500 Schematics

S90-500 Assembly Instructions

S90-500 Overlay

B16-500 BOM

B16-500 Schematic

B16-500 Assembly Instructions

B16-500 Overlay

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