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In Reply to: RE: Ordered my DIY headphone amplifier posted by jedrider on October 23, 2014 at 07:02:27
Let us know what you think when you get it.
"We are all in God's hands... and God is a malign thug."
-Mark Twain
Follow Ups:
Well, hooked it up with electricity exposed. Kind of harsh sounding at first, so put it away after half an hour.Second listen: What great sounding bass. The highs are a little detailed sounding. I listened for over an hour.
Overall, looking at the pre-assembled units, that sell for $200.00 shipped, I think they are worth it.
So far, $32.00 plus $16 for the toroidal transformer and it's my best headphone amp yet.
Now, I have to figure out how to do a case for it, which is ALWAYS the great difficulty of DIY. I would settle for two boxes and keep the PS separate, but I don't see any I like until we get > $85.00 shipped. I'm thinking wood and plexiglass. I have to keep the wood content down or else it becomes a very heavy case.
Edits: 11/05/14
Just ordered the case for it from Hong Kong.Case: $50.00
Electronics: $50.00Caveats are that the potentiometer seemed to be of low quality on my existing circuit board.
Bigger Caveat: Maybe, I should have never started this project. Casework is costing MORE than the original stuffed circuit board.
Shoehorning will be NECESSARY. Damn.Replaced the op-amp with a high-end one and, of course, much better detail overall.
I have to admit the design with output transistors, in general, gives a lot more bass reinforcement that exclusively op-amp based solutions probably miss.
Edits: 12/05/14
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