[Elecraft] headphone impedance

[Don Wilhelm]

Barry,

Normally for audio, the impedance is not a problem.  It is the voltage 
that matters.  The output of the headphone amplifier is a low impedance 
source which will drive loads of varying impedance.
Compare with plugging an appliance into a household AC receptacle - The 
power company provides a low impedance source, and the power transferred 
depends on the impedance of the appliance that you plug into the receptacle.

73,
Don W3FPR

On 12/28/2015 8:10 AM, Barry N1EU wrote:
> Is there an acceptable range of headphone impedance for the K3/K3s?
>
> I've got some 300-ohm headphones and wondering if the impedance alone
> makes them a poor choice for my K3s?
>
>