Jeez, Mouser and Digikey are going to go bankrupt if all the Pass diy guys stop building while we're waiting for the new amp.
I know how they feel! I've spent way more than normal on this stuff during this pandemic!
And now this..
Thankfully.....
I guess!
Russellc
And now this..
Thankfully.....
I guess!
Russellc
Now is the perfect time to order a Mega328 component tester & RLC meter from eBay. The sooner you order it, the sooner you'll be able to use it to double check components as you're stuffing them into your VFET PCBs. "Wrong resistor" problems banished forever.
link to photos see post #1972 of M2x thread . . . . . more photos #1973
example listing
Beware, many sellers offer the PCB separately from the acrylic case or "shell" ; be sure you're ordering BOTH the PCB AND the shell.
Now is also a good time to replenish your supplies of soldering materials. Wire solder, flux, desoldering braid, replacement tips, sponges, tip activator ("tip tinner"), Soldapullt pump, and so on.
link to photos see post #1972 of M2x thread . . . . . more photos #1973
example listing
Beware, many sellers offer the PCB separately from the acrylic case or "shell" ; be sure you're ordering BOTH the PCB AND the shell.
Now is also a good time to replenish your supplies of soldering materials. Wire solder, flux, desoldering braid, replacement tips, sponges, tip activator ("tip tinner"), Soldapullt pump, and so on.
What The What....More Really Cool Stuff
I am still "Begging for Forgiveness" for buying a "FSP Ultra Phono PreAmp".
Not telling your Social Director and Money Man aka. Wife before hand can have dire consequences. I had to go to Her Cousins Wedding.
I will have to do some serious planning for this..........😎
I am still "Begging for Forgiveness" for buying a "FSP Ultra Phono PreAmp".
Not telling your Social Director and Money Man aka. Wife before hand can have dire consequences. I had to go to Her Cousins Wedding.
I will have to do some serious planning for this..........😎
Are the boards in post 11 and 12 populated for testing or will the boards be partially or fully populated for sale in the store?
Thx.
Thx.
from a post in the other thread on this:
https://www.diyaudio.com/forums/pass-labs/362836-amp-recommendation-solicitation-4.html#post6414393
"Yes. Given the price and scarcity of the Sony VFETs, I am mounting the
output transistors and enough parts to protect them and allow a
functional test.
This kit is designed to be friendly to newbies as well as you sophisticates,
and this way there will be fewer tears.
Don't worry, there are parts to add, and you can still pick your own
caps. It's powered by a desktop supply and I designed a nice little
filter to take the noise out.
There will be options for five, count 'em, five front end designs,
one of which is my M2 input stage, and the others are Mark Johnson's."
https://www.diyaudio.com/forums/pass-labs/362836-amp-recommendation-solicitation-4.html#post6414393
"Yes. Given the price and scarcity of the Sony VFETs, I am mounting the
output transistors and enough parts to protect them and allow a
functional test.
This kit is designed to be friendly to newbies as well as you sophisticates,
and this way there will be fewer tears.
Don't worry, there are parts to add, and you can still pick your own
caps. It's powered by a desktop supply and I designed a nice little
filter to take the noise out.
There will be options for five, count 'em, five front end designs,
one of which is my M2 input stage, and the others are Mark Johnson's."
Attachments
The old design was a sophisticated effort, but ended up not appropriate for these
parts. I will put it to use elsewhere in the future.
parts. I will put it to use elsewhere in the future.
@ Mr Pass
After this kit the next DIY amp could be something interesting with Germanium transistors or Tokin SIT's ?
After this kit the next DIY amp could be something interesting with Germanium transistors or Tokin SIT's ?
Hot damn! Looks like the MoFo I had planned as my next project just got bumped!
ahh haha yesss Papa Clause sends his UPS/FedEx reindeer this time of year to deliver VFET toys to all the good Greedy Boyz 😀
I'm in the same boat. I just built a couple of ACAs and decided on the F4 as my next project. I've been in love with a 3W singled-ended KT88 based cathode follower amp for almost 10 years. It will interesting to see what a good SS current drive amp sounds like.
Parts ordered. What could possibly go wrong?!
Parts ordered. What could possibly go wrong?!
Last edited:
They are on the march.
This my next! just finishing up my lil simple sit amp with 2sk180. Looking forward to building an amp with the Sony sit I have. Thank you Mr Pass!