Neumann BV33 STEREO Moving Coil (MC) step up input transformer

Description

Neumann BV33
This is up for the Neumann BV33 STEREO Moving Coil (MC) step up input
transformer is made byHaufe, German transformer manufacture.
This is in metal case with input and outpur RCA jacks with Ground terminal.!
Neumann BV33 step-up MC input transformers were used in Neumann WV2
and WV2a tube equalizer amplfier in early 1960's.
After 1962, used the One stereo BV33 transformer instead with type number 2xV264.
This transformer is New edition of the BV33 produced by Haufe with Limited edition.
The BV33 MC transformer were produced by Haufe manufacture on behalf of Georg
Neumann company in Berlin, and were used in the broadcast studio preamp/equalizer
Neumann WV2a, and as well in the little brother of the Neumann WV2 the SEV 1, an
MC phono preamp/equalizer for general purpose application. The Haufe Neumann
BV33 consists of two identical and matched MC transformers installed in one heavy
gauge mu-metal screening can. This MC transformer is perfectly suitable for operation
with all MC cartridges, with output impedance from 2 to 100 Ohm (for example from
low output impedance Ortofon SPU to high output impedance EMT TSD15)
Made in Germany. Comes in metal case with RCA jacks RCA sockets
Technical data : Standard ratio 1 : 50 with open output (no loaded)
Actual ratio 1:40 with load resistor about 100 kOhm - as in the originally circuit of
Neumann WV2 pre-amplifier
Actual ratio 1:30 with load resistor about 50 kOhm ?
as standard in each MM- phono equalizer preamplifier
Actual step-rate is 30 dB in case a operation with MM phono pre-amplifier,
with 47-50 kOhm load/input resistance
Input DC resistance : 8 ohm Suitable for use with all cartridges
with output impedance from 3 to 100 ohm
Recommended for the low impedance cartridges
with an output impedance about 3 to 40 Ohm
Output DC resistance: 4,4 kOhm Output load resistance: 50 - 100 kOhm
Dimensions: W120 mm H90 mm D80mm
Shipping will be via EMS post world wide.
Thank you for looking.