Author Topic: Mars SE88 power amplifier  (Read 1260 times)

Offline Mars

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Mars SE88 power amplifier
« on: March 13, 2017, 04:39:28 PM »
Mars-SE88-front-1024 by Karel Mars, on Flickr

Mars SE88 power amplifier

Single Ended Triode amplifier

  • R18000
  • KT88 power tubes
  • 2 x 8 watt triode class A power. Ideal for full range single driver loudspeakers
  • 0 negative feedback
  • 6SN7 driver tube
  • 5U4 or GZ34 rectifier tube and 10 Henry choke in power supply
  • Photo flash capacitors in power supply
  • WIMA film coupling capacitors
  • only one capacitor in signal path
  • XLR and RCA input connectivity
  • olive green and stainless steel enclosure options available


connectors by Karel Mars, on Flickr
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Offline Mars

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Re: Mars SE88 power amplifier
« Reply #1 on: August 30, 2018, 10:50:13 AM »
We have had a good response for this SE88 power amplifier design. Here is a current build in progress:

Mars SE88 by Karel Mars, on Flickr

The circuit is still the same as published, but the output transformers have been enlarged 20% for more power output. Primary inductance has been increased to 15 Henry on the 5000 ohm primary impedance.
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Offline Mars

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Re: Mars SE88 power amplifier
« Reply #2 on: September 17, 2018, 10:20:29 AM »
Correction: primary inductance is 20 Henry.
OEM manufacture of Tube Audio
Power and Integrated Amplifiers
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