Amplification term used to describe the process whereby two channels of amplification are combined to operate as a single mono channel. Bridging allows a stereo amplifier to operate as a mono amplifier or any multi-channel amplifier to act as an amplifier with fewer channels. Each of the combined channels benefits from having more power than an individual, unbridged channel. However, bridging is not a substitute for using a single, high-quality mono (one channel) amplifier if that is desired. Bridged amplifiers provide more power but are limited in their ability to effectively output power into low impedance loads. Most amplifiers when bridged can only be operated at an 8 ohm level or higher. It is preferable to purchase two true mono amps or purchase a single stereo amp with more power than bridging two lower power amplifiers.