4 ms·
That is unequivocally false. Amplifiers (inside the DAC) are not ideal voltage sources at all loads and frequencies. Depending on the capacitive loads the ampli
by tonmoy 4y ago
That is unequivocally false. Amplifiers (inside the DAC) are not ideal voltage sources at all loads and frequencies. Depending on the capacitive loads the amplifier might need to adjust compensation to make sure it remains stable in all situations. For resistance you will need to limit the output voltage to ensure you’re not going over the over current limit, or you can get hurt on dynamic range for high resistance loads. To make a good product then you’ll need to dynamically detect the resistance and adjust the voltage. All of these problems are trivial and would increase efficiency greatly if you know exactly how much load there is connected. With all the crazy 3.5mm jacks there are it is inefficient to make a product that fits all. And don’t even get me started on splitters and all the types there are.
- raverbashing 4y agoHeadphones are mainly inductive charges. A short cable won't have enough capacitance to change that. (maybe in audiophile crazy-land, that is). > amplifier might need to adjust compensation You're pushing audio, not a cable TV signal... > For resistance you will need to limit the output voltage to ensure you’re not going over the over current limit, or you can get hurt on dynamic range for high resistance loads. What crappy device are you plugging into a headphone jack that's even an issue? Short protection is common in most ICs. Or, you know, use a regular headphone with an impedance between 32 an 100 ohms and that should be fine. > crazy 3.5mm jacks there are it is inefficient to make a product that fits all What's so crazy about it? Yes, stereo and mic inputs might be unpredictable, but for usual stereo audio it's pretty predictable People are saying that like if most USB headphone vendor is not going to plug the cheapest DAC they could find and push whatever to the headphone.