2in1 Active Passive Dual Summing Mixer Advantages Benefits Neumann v475 Lawo Filtek Haufe - vintage

What is the 2in1, both Active and Passive summing mixer?
Benefits of 2in1 summing: different amp = different sound character, and gives you a wide range of different colour options, by different amplifiers.

Is an Active summing with inside amp, with Passive switching option.

Like you have 2 type of summing mixers in the box.


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