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Model 0147 DIY Kit from 47 labs.
Model 0147 DIY Kit from 47 labs.
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Old 2nd June 2011, 03:22 PM   #1
rjm is offline rjm  Japan
Richard Murdey
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Model 0147 DIY Kit from 47 labs.
Default Model 0147 DIY Kit from 47 labs.

This seems new. Solid state, discrete transistor headphone amplifier kit form 47 labs. I like the styling and the old school layout. Price is quite reasonable too.

0147 Treasure

Interesting aside: I had never seen this before, but it ends up very similar to my Sapphire headphone amp I built recently, with a very similar design philosophy. The output stage is kept outside of the feedback loop, and the output stage is comprised of a pair of complementary transistors on each phase of the push pull buffer. I achieved this with a diamond buffer, they did it with two "sziklai pairs" but the end result is the same and it's done for the same reason: to lower distortion by having NPN and PNP transistors in each phase of the push pull output stage.
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Last edited by rjm; 2nd June 2011 at 03:33 PM.
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Old 14th December 2011, 06:27 AM   #2
rjm is offline rjm  Japan
Richard Murdey
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Model 0147 DIY Kit from 47 labs.
Now updated in grey.

MODEL 0147

And a version with a USB DAC built in,

MODEL 0247

Plus, check out the CD player, solid state power amp, and passive preamp ...

47 Labs Shop

I'm such a sucker for grey hammertone. Yeah, I know it's a commercial link, but this new stuff from Mr. Kimura is channeling the low-rent DIY vibe big time, it deserves to be here.
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Last edited by rjm; 14th December 2011 at 06:31 AM.
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Old 14th December 2011, 06:31 AM   #3
igor0203 is offline igor0203  Slovenia
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This looks like somebody made this in a garage...
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Old 14th December 2011, 12:47 PM   #4
Burnedfingers is offline Burnedfingers  United States
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Some of us need english
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Old 14th December 2011, 12:50 PM   #5
PreSapian is offline PreSapian
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why couldnt they have used fiberglass pcb? any sonic benefits from phenolic?
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Old 14th December 2011, 05:00 PM   #6
homemodder is offline homemodder  Portugal
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Quote:
Originally Posted by PreSapian View Post
why couldnt they have used fiberglass pcb? any sonic benefits from phenolic?
No, only disadvantages,

except if snake oil is involved......
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