The G7 is a tube condenser microphone based on the Neumann U67 and U47. The designer describes the circuit as a combination of the M49 and U47, but with the tube from the U67. Instructions, a bill of materials, and a PCB layout are available on the Gyraf website.
Images courtesy of Gyraf Audio
- Switchable between omni, cardiod, and figure-eight pickup patterns
- Designed for AKG C12 capsule, with other options available
- EF86 tube
- Lundahl transformer
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For more information visit www.gyraf.dk.