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

2.9mA

Gm=2100

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