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Seventh Circle Audio
High quality DIY and fully assembled microphone preamplifiers and other professional audio recording gear. Made in the USA
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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
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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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