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If you don't, have switchable microphone inputs see below
If you have the switchable microphone inputs this is not for you, if you don't, to change the mike or line pre-amps take out the two screws under the Nagra as above and pull the plug in amps out, you can use 3 types
above is a QPM-6 LINE INPUT PREAMP, above a QPSE MICROPHONE PREAMP, above a QPM 3-5 MICROPHONE PREAMPLIFIER,
QPM-6 ASYMMETRICAL LINE INPUT, makes the 3 pin XLR a line input,
QPSE MICROPHONE PREAMPLIFIER 200 or 50 Ohm Dynamic microphone input, or any microphone with internal battery.
QPSI MICROPHONE PREAMPLIFIER as above
QPM 3-5 MICROPHONE PREAMPLIFIER, makes the 3 pin XLR a microphone input, that powers the 12 volt "T" powered microphones like the Sennheiser MKH 405, 415, 805, & 815 T these microphones are the same as the MKH 435, 416, 816 P48 phantom powered microphones but work from 12 volt "T" and are much cheaper to perches.
QPM 3-4 as above but older type
Other microphone inputs used with the Nagra 4 / IV-
SENNHEISER KAT 15-2 see item UA210 plugs into the line input and uses the line level control
AKB-11 12 VOLT see item UA100 Plugs into a Dynamic input and powers the 12 volt "T" microphones
Dual 12- 48 volt Phantom microphone power supply, see item UA48 plugs into dynamic input
To buy this item please telephone: MIKE 01932 241948 OR Email firstname.lastname@example.org