Re:After roasting Apple about headphone jacks, Google dumps ...
by raverbashing on Friday May 13, 2022 @04:08AM
(#31364673)
> For example, Beyerdynamic offers 32, 80, and 250 ohm versions of several of their models.
Yes and you know what happens when you plug a higher impedance phone in a low impedance output right? (and the point is moot because we're talking about consumer devices)
> Headphones with impedance greater than 100 ohms are typically older or professional studio specific design
(or valve outputs - because of course it's "audiophile stuff") https://www.headphonesty.com/2019/04/headphone-impedance-dem...
> A cable has both resistance and capacitance, which means every cable is also a low pass filter.
A cable is a https://en.wikipedia.org/wiki/Transmission_line and while it is technically a low-pass filter you have to show me actual numbers to convince me that it will significantly affect, let's say > 10kHZ at usual headphone cable lengths.
A quick search for "high-impedance headphones" might be enlightening on this topic.
For example, Beyerdynamic offers 32, 80, and 250 ohm versions of several of their models.
> If cable length is an issue for you then you're using a really bad cable. I mean, really bad. Or have a severely underpowered output amplifier.
A cable has both resistance and capacitance, which means every cable is also a low pass filter.
If you are tuning the DAC/amplifier with power consumption as one of the criteria, then actually, yes, you will want the output power as low as possible -- which means cable length is a factor in the optimization.