Rated Power into 2 Ohms
Rated Power into 2 Ohms states an amplifier’s electrical output in watts (W) per channel into a specified 2-ohm test load.
A rating of 2 × 200 W means 200 W per channel, not 400 W from either channel. At the same output voltage, lower resistance lets more current flow, increasing the demand on the amplifier.
Rated Power into 2 Ohms — Power Amp
Compare figures at the same load, frequency range, number of channels driven together and distortion limit. Continuous power describes sustained output under stated conditions; a brief burst rating cannot replace it. If test duration is missing, do not assume continuous output.
A resistor test cannot guarantee compatibility with every loudspeaker: speaker impedance varies with frequency. Check the maker’s minimum-load instructions for your operating mode. A stereo 2-ohm rating does not establish suitability or output power in bridged mode, which combines channels to drive one load.
Sources
- AHB2 output-power specifications — Benchmark Media Systems
- Measuring power amplifiers with reactive loads — Audio Precision
- Amplifier testing: current, voltage and load limits — Audio Precision
- Power measurements: continuous signals and bursts — Audio Precision