Burning Amp 2017 Updates Thread

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#121
Really loving the look of this preamp.
Will this be available in the store?
 

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#123
wrenchone said:
I've thought about making the Korg tube the centerpiece of a little preamp with some semi helpers, but the price is definitely a barrier to entry. It would definitely get along with the 30V supply I usually use for my preamp modules.
Click to expand...


Yeah korg looks good.
For my needs I need between 6dB to 12dB of gain to drive a source follower output stage direct.
Not more than 2% THD at 15V peak.
Papa's circuit looks like it was designed as a preamp for Sony V2 or other high gain push pull circuit based on the distortion specs.

Applying 10dB of feedback would get me close to what I need.
 
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#125
2 picoDumbs said:
Really loving the look of this preamp.
Will this be available in the store?
Click to expand...

Nelson Pass said:
Unfortunately the sweet zone for the Korg circuit as shown is less than 2
volts out, so you would want to think of some means of getting more gain.

I'm working on a nice Fet gain stage that might do that for you, and driving
a transformer for voltage gain is an option.

Apart from that, I find the Nutube to be a good match for amplifiers with 3rd
harmonic character, which is most push-pull types, including F4.

🙂
Click to expand...

Still in development, hopefully it makes it to the store!
 
#138
gibber said:
I can't help but feel this is a thread on a trade show...
Am i too german(e) w/ respect to diy roots perhaps?
Click to expand...

Unfortunate if that is the impression it gives. As far as I can tell, the closest
thing to a commercial entry was the Avermetrics analyzer, which I personally
thought was very interesting.

No item in my talk, or Wayne's or Siegfried's made reference to product for
sale - or if there was that potential, couldn't be easily made without the
assistance of the DIYaudio store, and I did not notice any significant
commercial aspect to the displays.

Stuff that was raffled off was donated, as were the 250 ACA amp channels,
where a $5 donation got you about $30 worth of parts.

I thought the whole thing was hugely DIY (including the management).

🙂
 
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