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Bi-Amp refers to the practice of using more than one amp to drive a pair of speakers. Bi-amping can be configured in two ways:

Horizontal bi-amping uses one amplifier to power bass drivers (woofers) and a different amplifier to power treble drivers (tweeter) or the midrange and treble drivers, depending on the speaker system.

Vertical bi-amping uses a single amp per speaker, with a dedicated channel for the bass driver and a dedicated channel for the treble or the treble and the midrange. Vertical bi-amping has the advantage of not having to use a single amp to power both bass sections, which can be very taxing on the amplifier, especially at higher volume or if the bass driver has a particularly low impedance at certain frequencies.



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