EF86 Telefunken Germany <> bottom gray shield NOS (72-06=1972) same date codes in white box from Telefunken factory case with Eagle Crest logo

2.7mA

Gm=2000

Best you can buy

Tested on Amplitrex

Good Ma range 2.6-3.5ma

Good Gm range 1800-2200

Recommended for

– Microtek Gefell UM92S
– Eastern Electric M520 amp
– VOX AC10
– Soundelux U99 [ LUCKY DEVIL SOUND (Oakland, CA) ]
– Neumann U47, U48, U67
– Manley Baby Tube mic
– Lawson L47MP
– Microtek UM92.1S mic [ CATFISH STUDIO (Lombard, IL) ]
– U67 [Sugar Hill Recording Studios (Houston, TX) “”Abbey Road of the South”” ]
– U67 (Bucbonera Records SL, Spain)
– U67 [ Retromedia Sound Studios (Red Bank, NJ)]
– Blue Bottle [Vertigo Sound Lab (Boulder, CO)]
– U47 [ Kyle Homme (Orange, CA)]
– Shindo Monbrison Phono preamp
– JADIS JP80MC preamp