Heres a variation of my amplifiers, a low power version meant to drive a pair of headphones:
http://i.imgur.com/mknb7.png
It does sound pretty good for beeing powered by a 2x14V 500mA wall wort and biased to around 20-25mA per channel.
http://i.imgur.com/mknb7.png
It does sound pretty good for beeing powered by a 2x14V 500mA wall wort and biased to around 20-25mA per channel.
Some headphones are hard to drive and needs large voltage swings or high power up to over a watt to give any satisfying volume, my headphones dont produce any usable volume at full volume when connecting to my mp3 players, at the computer line out u barely hear anything.
Why gain on my amp is so high is cuz its actually the driver stage for a bigger amp, it was just a test to see wut it'd sound like with headphones.
Why gain on my amp is so high is cuz its actually the driver stage for a bigger amp, it was just a test to see wut it'd sound like with headphones.
Agreed, my last amp was a gain of 2x with a 1.4vrms input and 64 ohm cans, and it was very loud at 12 o clock.
I always wondered why people have headphone amps with +-12v-15v rails. You cant send more then +-5v into a set of cans even at 600ohm.
I use 600-ohm AKG 240DF driven with Benchmark DAC-1 USB (+/-15V headphone amp?) every day and didn't feel they get incredibly loud. Signal of 5V peak over 600-ohm load would pump out 21mW(rms) power. Since most phones are rated at 1mW for its SPL, and if we think about a speaker system rated at 1W 1m for a comparable SPL, 21W power into that speaker really isn't much either. Many of us here have amps of way more than 100w/ch, so I guess +/-15V power rail for 600-ohm phone is not insane.
Agreed, my last amp was a gain of 2x with a 1.4vrms input and 64 ohm cans, and it was very loud at 12 o clock.
I always wondered why people have headphone amps with +-12v-15v rails. You cant send more then +-5v into a set of cans even at 600ohm.
I use 600-ohm AKG 240DF driven with Benchmark DAC-1 USB (+/-15V headphone amp?) every day and didn't feel they get incredibly loud. Signal of 5V peak over 600-ohm load would pump out 21mW(rms) power. Since most phones are rated at 1mW for its SPL, and if we think about a speaker system rated at 1W 1m for a comparable SPL, 21W power into that speaker really isn't much either. Many of us here have amps of way more than 100w/ch, so I guess +/-15V power rail for 600-ohm phone is not insane.
No need for double posting.
Sorry, but I never did post twice 15 minutes apart. Something must have gone wrong somewhere. I wish there was a way for me to get rid of one of them. You comment indicating double-posting could be out of someone's NEEDS is interesting.
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