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FS: "Premium-ACA"-, / Matching- and "Simplistic B1-Buffer" - PCBs
FS: "Premium-ACA"-, / Matching- and "Simplistic B1-Buffer" - PCBs
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Old 12th November 2019, 11:48 AM   #1
Rudi_Ratlos is offline Rudi_Ratlos  Germany
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Default FS: "Premium-ACA"-, / Matching- and "Simplistic B1-Buffer" - PCBs

Gentlemen, I like and offer you 3 sets of PCBs (see image 1) consisting of:

1) a pair of Nelson Pass ACA - PCBs, implementing TungstenAudios "Premium ACA" modifications
Refer to TungstenAudios thread: ACA amp with premium parts

My pair of ACA-PCBs also includes 2 tested pcs. of 2SK170BL transistors.
The "Premium Parts ACA" works "flawlessly" and sounds absolutely nice.

It is powered by a "CapMX - PSU", designed by JKuetemann.
Refer to this thread for information about the used CapMx - PSU:

Simplified MrEvil / PMI Capacitance Multiplier

and read "Rod Elliotts Project page 15" to find out, why a CapMX PSU is the best suited PSU for the ACA.
I will of course give you all needed documents (schematic, layout, BoM, drill-template, ...) for my ACA-layout

Images 2 and 3 show you my "Premium Parts ACA".

2) a BJT - matching PCB
I have been in need of a PCB to match "big" BJT-Transistors and the N-Fet 2SK170BL. The result is shown in pictures 4 and 5.

3) Last, but not least: I include my version of the B1-Buffer in this offer.
Refer to Image 6. The Buffer is driven by a dual LT3082 PSU.You need 2 pairs of well matched 2SK170BL.

I will offer you a set (consisting of the 4 PCBs and 2 pcs. of 2SK170BL) for 18Ä; unregistered worldwide shipping is included.
I have 3 sets left.


If you are interested iny my offer: give me a PM.

Best regards - Rudi
Attached Images
File Type: jpg SNV34794.JPG (553.8 KB, 324 views)
File Type: jpg SNV34735.JPG (553.9 KB, 326 views)
File Type: jpg SNV34756.JPG (550.2 KB, 324 views)
File Type: jpg Matching_Rig.JPG (56.9 KB, 331 views)
File Type: jpg SNV34793.JPG (546.3 KB, 323 views)
File Type: jpg B1_Buffer.jpg (136.1 KB, 149 views)
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Old 12th November 2019, 02:05 PM   #2
Rudi_Ratlos is offline Rudi_Ratlos  Germany
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I have been asked to show the schematic of my "Simplistic B1-Buffer" PCB.
Find attached an image of it.
The buffer is driven by a dual LT3082 PSU (on the PCB), providing +/-10VDC.

Best regards - Rudi_Ratlos
Attached Images
File Type: jpg B1_Buffer_sch.jpg (70.5 KB, 149 views)
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Old 12th November 2019, 04:40 PM   #3
JRKO is offline JRKO
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Iím in!

Iíll send a pm
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Old 14th November 2019, 09:13 AM   #4
Rudi_Ratlos is offline Rudi_Ratlos  Germany
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Gentlemen, all of the PCBs have been sold.
Please don't ask anymore.

Regards - Rudi_Ratlos
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Old 20th November 2019, 09:22 PM   #5
randytsuch is offline randytsuch
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FS: "Premium-ACA"-, / Matching- and "Simplistic B1-Buffer" - PCBs
Any plans to make any more?
amp camp pwbs.
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