BoredBrain Xport

BoredBrain Xport

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The BoredBrain Xport is designed to convert eurorack audio to professional balanced line-level signals. Balanced audio is essential in pro audio applications due to its immunity to noise introduced in long cable runs. Audio signals in this format are commonly used with pro audio interfaces, mixers, patchbays and live sound equipment.

Its six ¼-inch TRS jacks, OUT 1-6, output differential signals are scaled to +4 dBu and can drive long cable runs with high capacitive loads. The compact 6-channel layout is possible by using high performance balanced line driver ICs rather than much larger isolation transformers.

These differential or “balanced” signals are the key to noise rejection. Prior to signal output, a duplicate is made with an inverted polarity. Using a TRS cable, the original signal, SIGNAL +, is connected the tip (T) of the plug, while the inverted signal, SIGNAL –, is connected to the ring (R). These two signals travel on separate wires within the same cable. At the balanced input, the inverted signal is re-inverted and combined with the original signal. Because any noise picked up across the cable affects both signals equally, it undergoes phase cancellation and is removed from the FINAL SIGNAL.


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