Pedal Output impedance

[FredB]

I was wondering if there was there was a standard target output impedance for pedals.  I just read were one pedal advertised 2.2k ouput impedance.  I have been aiming for something capable of driving a 10k load.  Is there a common value for this?

[CynicalMan]

A 15' cable has a capacitance of around 500pF. For your pedal to drive that with a 10kHz or higher rolloff, you need an output impedance of 32k or less (R = 1/(2*pi*C*f)). To drive a 20' cable, you need an output impedance of around 21k or less. In practice, output impedances go up to around 50k, and there isn't much of an effect.

If you're using guitar gear, you're unlikely to find something with a 10k input impedance. If you need to drive studio gear or stereo gear, then a buffer on the output of your effect would do the job nicely.

[PRR]

> you need an output impedance of 32k or less

And yet many stompable things output from the wiper of a 500K pot. Worst-case (and not unlikely): 125K output impedance.