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3 Transistor HP Amplifier with low dist
3 Transistor HP Amplifier with low dist
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Old 16th June 2021, 08:31 AM   #251
joensd is offline joensd  Germany
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Join Date: Dec 2001
Location: Berlin, Germany
Quote:
Another one to add to the "basket" of designs. Test Board...
Beautifully compact & symmetric! Thatīs a very nice layout.
What SW is that? Looks nice for perfboard layouting. (I use Lochmaster which is OK too)

Are we already at 1 layout/page?

Quote:
Lots of pcb variants and just a few implementations.
You are correct. We shall all post our implementations, me included of course.
Shouldnīt have made a "temporary enclosure" because now I canīt stop listening!

Literally the only improvement I can think of for this amp, is to add an optional crossfeed. The amp is revealing enough that certain recordings are "tough" to listen to. Of course thatīs an inherent disadvantage of headphones in general. No blame on this beautiful amp.
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Old 16th June 2021, 09:25 AM   #252
BucketInABucket is offline BucketInABucket  Hong Kong
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Join Date: Aug 2015
Location: Audio heaven
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Originally Posted by avtech23 View Post
L_out trace is running too close to the heatsink mounting stud.
Ah dammit, hopefully it'll be fine since it's on the underside. Will fix for next revision.
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Old 16th June 2021, 10:07 AM   #253
knauf1919 is offline knauf1919  Europe
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Location: Romania
Quote:
Originally Posted by joensd View Post
Beautifully compact & symmetric! Thatīs a very nice layout.
What SW is that? Looks nice for perfboard layouting. (I use Lochmaster which is OK too)
It is not a special perfboard software. I use Easy-Eda.
The design is not original and is inspired by the others made by prasi and avtech23.
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Old 16th June 2021, 10:15 AM   #254
knauf1919 is offline knauf1919  Europe
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Originally Posted by joensd View Post

Please go ahead, Iīd love to hear your opinion, anytime.
BR
Jens
Regarding this discussion ...
I was thinking that just putting both ,headphone amplifier and power amplifier inputs in parallel, can bring minor changes. I don't know, maybe it's stupid to consider that.
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