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In the 1960s, Siemens was the first manufacturer to launch transistor technology for professional audio applications. With the so called Siemens Sitral technology audio gear could be built much smaller and lighter. The transistor technology oped the doors for larger mixing systems with more channels and features. You can fimd more onformation about the Siemens Sitral gear and other cassette formats in this article here.

Vintagetools does not offer a rack series for sitral modules yet. One reason is, that even within that series the module sizes and connectors differ and it´s very hard to design a good looking series with standard features for all of them. If you are interested in a custom rack or lunchbox, please send us an inquiry via email. 

A selection of the most sought after modules in the Siemens Sitral format.


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One pair of Siemens Sitral W295 vintage german equalizers
Siemens SiTraL oszilator cassette mit five selectable frequencies
Siemens SiTraL oszilator cassette mit a fixed 1kHz frequency and 6-step selectable gain
Siemens SiTraL power supply mit 24V DC output and 1.25A current
Siemens SiTraL transformer-balanced line-amplifier. 1x in / 3x out. Outlevel can be +11/+14/+20dB at 0 dB Input-Level
Siemens SiTraL line- or isolating amplifier. Can be connected in different ways for different jobs. Max. 15dB gain
Siemens SiTraL buss&group summingamp. Great for analog summing!
Siemens SiTraL buss&group summingamp. Great for analog summing!
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