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EF 86 Microphone preamp circuit
Old Brimar EF86 tube to be used in a Bogen CHB14A conversion. What can I expect from a EF86 in comparison to the usual dual triode based preamps found in most guitar
AmplitudeModulation
CV4085 Special quality EF86
SM5CBW - Tubedata
The EF86 Tube
EF 86, Tube EF86; Röhre EF 86 ID2011, Vacuum Pentode | Radiomuseum.org