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Orphan Audio
Preservation & Restoration of Classic Audio Equipment
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Home
About
About Orphan Audio
Orphan Audio: Services
Recommended Links
Orphan Audio News & Audio Industry Notes
Classic Audio Equipment
ADM Archive
ADM Gallery
ADM Equipment List
ADM History
Electrodyne Archive
Electrodyne Gallery
Electrodyne Equipment List
Electrodyne History
Helios Archive
Helios Gallery
Helios Equipment List
Helios History
Langevin Archive
Langevin Gallery
Langevin History
Langevin Equipment List
Quad-Eight Electronics Archive
Quad-Eight Gallery
Quad-Eight Equipment List
Quad-Eight History
Sphere Archive
Sphere Gallery
Sphere Equipment List
Sphere History
Galleries by Equipment Type
Cards & Accessories
Channel Strips
Compressors
Consoles
Custom Rackmounts
EQs
Parts
Preamps
Pinouts, Schematics & Spec Sheets
Contact
Helios Equipment List
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Classic Audio Equipment
Helios
Helios Equipment List
Helios Gallery of Images
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Helios History
| Helios Documentation
Helios | OB Module Russian Hill Recorders
Details
Helios | Module Amp Cards
Details
Helios | D4ab 1
Details
Helios | 22113 Amp Card
Details
Helios | 3012 EQ Preamp
Details
Helios | 2128 Amp Card
Details
Helios | 0011 EQ Preamp
Details
Helios | 0011 Early
Details
Helios | 3Band SW
Details
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