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In Reply to: That was Andy Newell's headphone amp... posted by Garland on September 14, 2003 at 11:35:09:
It's a low voltage tube hybrid headphone/line amp, not from a kit, but from an article in the 11/02 issue of audioxpress. You can get all the parts from electronics suppliers, including the circuit board. Total cost is about $100. And, in the spirit of the $5 driver comment, it is the best $100 headphone amp I've ever heard.
Follow Ups:
Yeah, the one that worked was not mine, alas. Mark Hardy's little hybrid unit uses tubes designed for automotive use - B+ in the 12 to 18 Volt range. Cool!Tom1356 and I tried to light the fuse on my 27-801A headphone amp, but it refused to go. Hum in one channel, and silence in the other. Indian Burial Ground indeed. Today I finished the dovetailing of the birds-eye maple chassis, so next time it will look and sound much better.
I have a few photos from Saturday, but nowhere to host them....
Two things: one, if you scroll up top there's a post from badman. He sez he'll host photos. sounds like he's hot to see 'em, so maybe that would give all of us a quick fix until Dave's most excellent report can be done.Two, what was the design you based your headphone amp on? Was it one of the ones posted on Headwize? (I've got the tube headphone amp bug now).
Andy,You can send 'em to me and I'll cobble together a meet report with pix on my site.
Can't promise to have it up this week, (jammin' for a trip), but I'll take care of it, and it 'll go somewhere that won't wink out unexpectedly soon after it appears. (I'm happy to say Brad Brooks is my ISP and host.)
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