Impedance
Frequency-dependent electrical load and source impedance
Articles tagged Impedance
Do you need a separate headphone amplifier?
A separate headphone amplifier is useful when it solves an identified limitation in the existing output, such as insufficient usable level, unsuitable noise performance or a missing connection. Impedance alone does not decide the question. Compare headphone sensitivity with its reference units, the source’s output under the relevant load, and the volume-control range you can actually use.
How much amplifier power do your speakers need?
Amplifier power depends on speaker sensitivity, listening distance, required level and allowance for peaks. A calculation can show how those inputs change demand, but it cannot certify a speaker pairing. Check the amplifier’s supported load and rating conditions, the speaker’s limits, and the intended installation before turning an estimate into an equipment choice.