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Millett "Starving Student" hybrid amp
Jan 20, 2018 at 9:31 PM Post #7,111 of 7,277
Sorry to revive an old topic from the dead... just wanted to inform everyone a friend built this amp for me, here is a pic... I love it... sounds much much better than my Vali 2 amp did. I need to get feet for it and a volume knob, but I must stay overall it is a definite upgrade from the Vali 2. Thanks @Tjj226 Angel for building it for me. He rushed it out to me since I am flying out soon for grad school, hence the lack of feet and volume knob, not a big deal, I put some temporary rubber feet on it for now. I am surprised no one is making a side business of building these.

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Jan 21, 2018 at 11:16 AM Post #7,112 of 7,277
I've been really pleased with mine. I have an original that runs the 19j6 tubes and another running the 12au7. Both are better than they should be for the $ for sure.
 
Jan 21, 2018 at 6:33 PM Post #7,113 of 7,277
Wiljen said:
I've been really pleased with mine. I have an original that runs the 19j6 tubes and another running the 12au7. Both are better than they should be for the $ for sure.
Click to expand...


Yep, it is amazing no one has built these as a side operation, it beats everything on the market under $300 imo
 
Jan 21, 2018 at 6:42 PM Post #7,114 of 7,277
I think Pete Millett may still have some rights regarding commercial use of the design. I know some other common DIY amps have "no commercial use" or "no derivatives" clauses.
 
Jan 21, 2018 at 7:34 PM Post #7,115 of 7,277
Some of you guys need to read more of this thread and even Pete's website, where the following is found near the top of the home page:

PLEASE READ - Commercial usage of information on this site:

I consider all the information that I post here to be in the public domain. So, you can use it however you want, for commercial or non-commercial use.

That said, I would appreciate it if you at least let me know if you are going to use any of the circuits or especially PCB Gerber files to make commercial products, or to sell bare PCB's.

Also, Beezar Audio has sold a series of kits (the SSMH) on at least 2 or 3 occasions since 2009.
 
Jan 21, 2018 at 7:57 PM Post #7,116 of 7,277
Wiljen said:
I've been really pleased with mine. I have an original that runs the 19j6 tubes and another running the 12au7. Both are better than they should be for the $ for sure.
Click to expand...

How do you like the 12au7s compared to the 19j6 version? I have an amp that untill last month has been running since Pete had posted his design. I tried to get a pair of matched 19j6s, but the only matched set I found was from overseas and one came in pieces :/ So now I'm considering changing the circuit to accommodate the 12au7s, but really liked the 19j6 version.

If anyone has leads on matched 19j6s that don't cost a ton I'm one to that as well!

Thanks,
Nick
 
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Jan 21, 2018 at 8:22 PM Post #7,117 of 7,277
The 12a_7 version is definitely cheaper to feed at this point. I have a few pairs of 19j6 left but like you mentioned, they have become unobtainable without spending ridiculous money. For that reason, I am not letting go of the few I have as once gone, I'll have to convert that amp to 12a_7 too. The variety of the 12au7 and 12at7 variants give you a lot of options from ridiculously cheap to ridiculously expensive. I have found some really nice sounds at <$50 a pair.
 
Jan 21, 2018 at 9:06 PM Post #7,119 of 7,277
Trower said:
Okay thanks for the info!

Any good suggestions for 12au7s you liked?
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E182CC ( This is the tube I would upgrade to. This is a true special version. It is designed with much larger tube elements to reduce noise, microphones, and increase signal clarity. Mullard is the only one I know of that makes a E182CC).
 
Jan 22, 2018 at 9:31 AM Post #7,120 of 7,277
There is no easy answer to this as it largely depends on what you are pairing with.

WIth the Senn HD700s I really like the the GE 5 Star 5814. The RCA Command Version of the same tube is also very good.
For the Fostex T50RP and mods it would be very hard to go wrong with the 6829. it is a low Mu 12at7 variant that has a lot in common with the e128cc mentioned above but a lot cheaper.

A word of warning for enclosed units the E182cc and 6829 are both about 1/2 an inch taller than the standard 12a_7 series tubes and may cause fit problems.
 
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