Author Topic: Mars Output Transformers  (Read 418 times)

Online Mars

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Mars Output Transformers
« on: February 17, 2017, 04:53:39 PM »
Hi All
I'll be posting details of the audio output transformers we manufacture.

First in line is the Mars 6K:8ohm 35 watt push-pull Ultra Linear transformer that is used in our Mars Stereo 70 amplifier:

Price: R2400 ea.


IMG_7510 by Karel Mars, on Flickr

This OPT measures 80mm(width) x 80mm(depth) x 100m(height)


  • 138H Primary inductance for excellent bass response.
  • Wide band width for excellent frequency response
  • We hand roll the transformers at our workshop.
  • The transformer are built up of 4 sections of Primary and three parallel connected Secondaries. The three secondaries cover the whole width of the bobbin, giving excellent coupling to the magnetic field (your music).
  • Ultra Linear taps are at 33% of the windings.
  • Fly leads are 400mm long to facilitate direct connection to tube sockets
  • We use South African made steel laminations.
  • We use South African manufactured copper wire

3-section-transformer by Karel Mars, on Flickr

IMG_7508 by Karel Mars, on Flickr
« Last Edit: February 17, 2017, 05:18:12 PM by Mars »
OEM manufacture of Tube Audio
Power and Integrated Amplifiers
Phono Pre-amplifiers
DIY Kits
DIY Workshops

Online Mars

  • Commercial Member
  • Trade Count: (+1)
  • ***
  • Posts: 940
  • “The path is the goal.” Mahatma Ghandi
    • Mars Tube Audio
Re: Mars Output Transformers
« Reply #1 on: July 18, 2017, 10:50:37 AM »
We are doig a run of C-core output transformers for single ended amplifiers. This is a 7watt 5k ohm transformer with 5 secondaries as specified by the customer. Ready to varnish.

Single ended output transformer by Karel Mars, on Flickr
OEM manufacture of Tube Audio
Power and Integrated Amplifiers
Phono Pre-amplifiers
DIY Kits
DIY Workshops