For Sale Lots of PCBs - VRDN H9KPXG Milpitas UDP3 AmyAlice Holy Grail R21

[birdbox]

PCB's and some full kits "recently" purchased (early Oct 2024) received from JLCPCB as an ode to @Mark Johnson , @lhquam , @tombo56 , & @Zen Mod for all they have given to the community.


UPDATE May 20: (See the table for price/availability. Shipping is about $6 in USA. International shipping tends to be a lot more.)

• Yes It Can Drive An F4 (YICDAF4) full kits available. 15 qty stereo kits available with (or without) tightly matched B546C BJTs. Parts kits without the PCBs are also available if that's all that's needed.

• BJT Simple Matcher Full kits available. (around 10 left)

• AmyAlice Full kits available (still have lots). Really nice 2oz outer copper, 2mm board thickness, and ENIG finish!

• Korg B1 Soft Heat Kits available. (a dozen remain, but i have blank PCBs to make more)

• M2x IPS6 Full Stereo Kits (kits near complete, working J113 matching now)

• M2x IPS7 Full Stereo Kits (in work still)

• M2x IPS8 Cedarburg PCBs only

• M2x IPS9 Milpitas Boards and Full Stereo Kits available

• H9KPXG Full kits available. Made up about 10 kits. (2oz outer copper, purple PCB)

• VRDN 30qty Full kits available with OnSemi Regs (2oz outer copper, blue PCB) [Note: These do not include the 5A Schottky Diodes (SB5100), which is only needed if using a single secondary AC wall wart. The kit assumes you're using dual secondary transformer for AC input.]

• Cheapomodo R3 Full kits available (18 kits available now).

• R25 PCBs by tombo56 available for those wanting to try out the active rectifier approach to a PSU (Limited quantity on hand). These are the updated version of the R21 boards now as a single PSU package. Really nice 2oz outer copper, 2mm board thickness, and HASL finish!

• Holy Grail PCBs and unmatched FETs (FQA28N15P/ITXQ36P20P) available (matching not necessary according to Lynn). Also have some FQA36P20 if you'd prefer those over the ITXQ36P20 although they seem to be the exact same part overall. Some matched N to N and P to P by Vgs (measured at 50°C, 1A, 24V) are available if needed.

• Alpha Nirvana 39 FETS: A few FQA40N25/FQA36P20 are available as well with the additional 2SC3503F (Fairchild), so that's what you need for XRK and AKSA's AN39.

• IRFP140/9140 parts matched by Vgs are available if anyone wants to use those. They are IR brand and are N channel matched and P channel matched, not N to P though for awareness. Quads and a few octets available as well matched N to N and P to P by Vgs (measured at 50°C, 1A, 24V). Can be used in may of the Pass amps that also can use IRFP240/9240. The IRFP9140 don't have the "shelving issue" that the IRPF9240 parts may have.

• Replacements for the Toshiba 2SK2013/2SJ313 are FQA3N30/FQP3P20 are also available matched for either NN and PP, or NNPP (all matched at 20mA, 40°C, 24V)

• KSC/2SC3503E & KSA/2SA1381E are near unobtainable, the KEC versions KTC3503-Y and KTA1381-Y are available for super good price at cost procured from Profusion. Not matched, however, that could likely be done if requested. Need to still figure out how to do this, so it'll be a while to get it all done by Vbe and Hfe.

• A few remaining ACA Mini "Modification" kits suggested by @ClaudeG are available as well. Reference this link.

• HPA-1 boards with the hard to find components are available for a few interested folks. (Includes hard to find Tightly matched FQP MOSFETs, 4qty Harris IRF610, 1qty NCP7812TG, & TIP122/TIP127 darlingtons)

• Willing to 3D print items for super low cost (a buck or two). Search "3D" under the "Parts" to see what has already been posted. Some examples are the vertical Antek transformer mount and Zenductor II "chassis" feet. The designs are shared freely if you have access to a 3D printer. We can make up a custom design for your needs as well if that's helpful.

• Lastly, I have a Vinyl cutter if anyone wants custom stickers made up to put on an amp, or preamp. I'm willing to make a small quantity for custom designs (not bulk orders as it's really time consuming to "weed" the vinyl). Send me a PM if that's something I can help with.

Send me a PM and I can provide more details. All this stuff is what I wanted to build and just got in bulk with the hopes of helping others out as well with a "reverse group buy" approach.

Yes It Can Drive An F4 Full Kits - (just PCB's shown of course in picture

Mark Johnson's BJT Simple Matcher

Holy Grail by @lhquam

FETS (Not matched) for Holy Grail (FQA28N15/IXTQ36P15) for Holy Grail

VRDN - Voltage Regulator De-Noiser by @Mark Johnson [2 oz outer copper, HASL]

AC Power Relay Soft Start - H9KPXG by @Mark Johnson [2oz outer copper, ENIG]

Milpitas for M2x Amp by @Mark Johnson

Pearl 3 PSU Board(s) "UDP3" by @Mark Johnson

AmyAlice by @Mark Johnson [2mm thickness, 2oz outer copper, ENIG]

Korg B1 Soft Heat by @Zen Mod

Tombo's R25 PCBs (replacement for R21 boards with PSU) [2mm thickness, 2 oz outer copper, HASL]

Mark Johnson's Cheapomodo Full Kit

HPA-1 Clone with Tightly Matched FETs (FQP3N20/FQP3P30 @ 20mV, 24V, 40°C), 4qty Harris IRF610, TIP122/TIP127, Reg NCP7812TG

 

[kb2wyl]

What a beautiful gesture thank you birdbox 🙏

 

[bhjazz]

Dan, you are so kind to do this. Kudos! What a great selection of boards - and I really like the H9KPXG in purple 😉

 

[Kelly T]

Dan,
I appreciate your big heart for people and the hobby, the boards got here safe and sound! I have always been grateful for the awesome people and support of this community.

Kelly,

 

[northpaw]

I've just received a set of 4 AmyAlice boards with parts kits from Dan. The boards are nice and thick with the very generous pads that Mark J designed into them, and the parts themselves are really nice too. Dan did a super job of packing these up (see two of Dan's photos of my order below) and getting them in the mail.

This will be my first experience with soldering SMD parts (well, there was that USB hub that got wet on the inside a few years ago that I tried to rescue, but I'd rather not talk about that...), and I can't think of a better-configured small SMD project to try my hand at.

Thanks again to Dan for making this a painless opportunity to try something new, and to Mark Johnson for creating the AmyAlice design.

 

[thirdicomplex]

Received my boards yesterday. They were packaged well and arrived quickly. Thanks again to Birdbox for his generosity!

 

[manniraj]

Received my R21 boards yesterday. They were packaged well and arrived a bit late due to UPS issues but thanks to @birdbox for his follow up and making sure I get the delivery.

 

[pchw]

Package arrived safely today, thank you, Dan!!

 

[silver89]

Received my Holy Grail, H9KPXG, Milpitas, Amy Alice kits, and KB1 boards promptly yesterday. Awesome packaging. Excited to build!! Thank you Dan for your time and generosity!!

 

[BEYoung]

Many kudos to Dan

Wonderful communication and patience, great boards, excellent packaging/packing/tracking - vacuum-sealed like the very best beef!
Don't miss out folks.

Thank you!!

 

[angchuck]

Thanks Dan,

Received the boards and semis, well packed and shipped all the way to Singapore!

HPA boards are large! I was surprised shipping was affordable as well

 

[Oneminde]

Received the HPA-1 boards and semis as well and very happy with the packing, all good. Nice and large boards.. 🙂 Thanks a million

 

[Ixnay]

What boards/kits are still available?

 

[birdbox]

I'll be sure to keep that table in the first post up to date so everything listed in that table will be available. I picked up a lot of PCBs. I may have gone a little overboard as it was my first time ordering from a fab house

 

[wg45]

Hey birdbox- I received my package this week.

Thanks again for the ZD25 Boards/Fets, Amy/Alice and a few other items!

 

[Jacruzer787]

The tittle of this thread is wrong. Request it to be changed to Dan’s Ultra Generous Surplus Electronics Store…. As a matter of fact, maybe it should be moved to the vendors bazar!

 

[rag1]

Dan,
Do you have two of the H9KPXG boards available?

Thanks,
Ron

 

[birdbox]

@rag1
I sent you a PM.

 

[rag1]

Hi Dan,
Sorry for the delayed reply. My wife just returned from Africa yesterday. The PayPal account is under her name. Yes, I would like two boards. Let me know the next steps. Do you know of any through hole bare boards for speaker protection. I'm building a couple of Wolverine amps and the soft start and needed speaker protection boards will be implemented in these amps.

Thanks,
Ron

Thanks

 

[ItsAllInMyHead]

^ Best to not post your personal information in an open forum. Reported your post just to help out. PM this information to birdbox.