KS Projects - High End Headphone Amplifier Construction
Sorry, I am new to the headphone forum. I don't know if you guys have seen this. Might be of interest
Sorry, I am new to the headphone forum. I don't know if you guys have seen this. Might be of interest
00940 you know that it is not 'top-end', but it does offer another schematic for the library of those new to investigating headphone amplifiers. It also demonstrates a nice clean enclosure and provides engineering drawings of the end plates as examples. Also, the construction photographs may be quite useful for those new to projects.
So not the ultimate, but may be helpful to some people.
So not the ultimate, but may be helpful to some people.
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Well, maybe I was a bit harsh. Still, it's a bit of a shame to use such expensive opamps, resistors and caps in a sub-optimal configuration.
I would at least do some simple mods: jumper the output caps (and caps in the feedback path, if my math is correct, DC offset should be under 5mV), reduce in value or jumper the resistor at the output.
I'm a bit puzzled by the use of the lm2940 when you're using a good old 7912 on the negative rail. I also don't see the point to burn 10ma just to bias the 1n4148 in the ccs.
The physical implementation is really nice though.
I would at least do some simple mods: jumper the output caps (and caps in the feedback path, if my math is correct, DC offset should be under 5mV), reduce in value or jumper the resistor at the output.
I'm a bit puzzled by the use of the lm2940 when you're using a good old 7912 on the negative rail. I also don't see the point to burn 10ma just to bias the 1n4148 in the ccs.
The physical implementation is really nice though.
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