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Vintage German Input Transformers - data  
   

Go to the mounted units for use with MC cartridges

Go to the input transformers made by Siemens / Haufe

 
     
 

Type

Picture

primary DC secondary DC

ratio

Comments and Suggestions

 

Beyerdynamic

 

35533

Beyerdynamic Beyer 35533 35549 35550 35553 35554 microphone input transformer phono MC eingangsübertrager

44 Ohms

1:3

 

4.8dB

  Outstanding frequency response (absolutely linear).

  Can size: 1,5cm x 2,0cm.

 
480 Ohms

Beyerdynamic

 

35549

25+28 Ohms

1:15

1:30

23.5dB

30dB

  Great overall frequency response (-3dB at less than 10Hz) - very linear highs (20kHz: +0.5dB, 35kHz: -3dB)

  Similar to type 35665 with split primary winding.

 
4.7 kOhms

Beyerdynamic

 

35550

16+18 Ohms

1:27

1:50

28.5dB

34dB

  Very high amplification and very good overall frequency response, but pretty low input impedance when used 1:50.

  Great transformers!

 
5.4 kOhms

Beyerdynamic

 

35553

37 Ohms

1:15

 

23.5dB

  Great overall frequency response (-3dB at less than 10Hz) - very linear highs (20kHz: +1dB, 35kHz: -3dB)

  Great transformers!

 
1.7 kOhms

Beyerdynamic

 

35554

Beyerdynamic Beyer 35533 35549 35665 35806 microphone input transformer phono MC eingangsübertrager

32 Ohms

1:30

 

30dB

  Great bass frequency response (7Hz: - 3.5dB, 40Hz: -0.6dB, 100Hz: -0.15dB, 10kHz: -1,2dB, 20kHz: -4dB) and high amplification.

  Great transformers!

 
5.3 kOhms

Beyerdynamic

 

35665

Beyerdynamic Beyer 35533 35549 35665 35806 microphone input transformer phono MC eingangsübertrager

58 Ohms

1:15

 

23.5dB

  Great overall frequency response (-3dB at less than 10Hz) - very linear highs (20kHz: +0.5dB, 35kHz: -3dB)

  Great transformers!

 
4.6 kOhms

Beyerdynamic

 

35806

Beyerdynamic Beyer 35533 35549 35665 35806 microphone input transformer phono MC eingangsübertrager

38 Ohms

1:10

 

20dB

  Great bass frequency response (-3dB at less than 10Hz) - slightly rising highs (20kHz: +1.8dB, 30kHz: +6dB) = very nice!

  Great transformers! Click here!

 
3.7 kOhms

Dynacord

 

3553

Dynacord 3553 Eminent EMT  microphone input transformer phono MC eingangsübertrager

50+50 Ohms

1:10

 

20dB

  Very common transformer found in many Dynacord amps (as MV46 or Eminent).

  Good overall frequency response. Not bad at all...

 
7.5 kOhms

Unknown

Dynacord 3553 Eminent EMT  microphone input transformer phono MC eingangsübertrager

62 Ohms

1:18

 

25dB

  Great overall frequency response. Excellent transformer.

 

 I don't remember where I found that one.

 
4.55 kOhms

Unknown

 

V127

255 Ohms

1:13

 

22.5dB

  Good bass frequency response (-1dB at 100Hz), but lacking highs (-6dB at 20kHz).

  Size: 1,3cm (dia.) x 1,2cm.

 
4.8 kOhms

Sennheiser

 

TB421

Sennheiser TB421 TB421 microphone input transformer phon MC eingangsübertrager

8+8 Ohms

1:45

 

33dB

  Great working transformer. One of the best I know.

 

  Size: 4,0cm (dia.) x 4,2cm.

 
 10.6 kOhms

Sennheiser

 

TM003

Sennheiser TM003 TM003 TM103 microphone input transformer phon MC eingangsübertrager

Ohms

1:15

 

22.5dB

  Very common, classic German microphone transformer from one of our biggest brands. Also found with 1:30 ratio.

 Size: 2,1cm (dia.) x 2,7cm.

 
kOhms

Telefunken

 

42.5102.055-26

Telefunken 42.5102.055-26 microphone input transformer phon MC eingangsübertrager

25 Ohms

1:16

 

24dB

  Great working transformer. Perfect with lower impedance cartridges as SPUs or Tondose.

  Size: 2.5cm (dia.) x 2.5cm.

 
 6.5 kOhms

Telefunken

 

8.506/647271

Telefunken 8.506/647271 microphone input transformer phon MC eingangsübertrager

35 Ohms

1:16

 

24dB

  Great working transformer. Perfect with lower impedance cartridges as SPUs or Tondose. Pretty similar to the above one

  Size: 2.5cm (dia.) x 2.5cm.

 
 5.9 kOhms

Telefunken

 

42-0198.00-02.7

 

21.5 Ohms

1:30

 

30dB

  Great working transformer. Perfect with lower impedance cartridges as SPUs or Tondose.

  Stereo in one μ-metal can.

 
 2.15 kOhms

Telefunken

 

41-5102.55-14.7

Telefunken Bv. 41-5102.55-14.7 microphone input transformer phon MC eingangsübertrager

68 Ohms

1:19

 

25.5

dB

  Great working xformer with great FR. Made by Haufe for Telefunken. Perfect  for lower input impedance MCs (SPU), but also for higher impedances (DL103).  Size: 2cm (dia.) x 2.2cm.

 
 10.7 kOhms

Melodium

 

E 40 ES

Melodium transfomateur french cinema microphone input transformer phono MC eingangsübertrager

Ohms

1:30

 

30dB

 This one comes from a big , French cinema amplifier. Great quality.

 

 Size: about 5cm (dia.) x 3,5cm.

 
kOhms
 

 

 

 

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