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Actidamp MkII phono preamplifier MM/MC - assembled DIY kit PCB
Description
This is a completed DIY kit for the popular Actidamp MkII phono preamplifier MM/MC. It is tested, adjusted and working.
The circuit was published in Amaterske radio (CZ) 02/1990 and is often built by audio enthusiasts even today, thanks to its properties and parts used that are not made from unobtainium.
PCB size is (180 x 77 mm) with black color.
The circuit should be supplied from a 24-0-24 VAC transformer (not included). It has input from MC or MM phono (adjustable type and load capacity of cartridge by jumpers) and line-level output.
Instructions how to complete it are on my web page that I am not allowed to link here, but you will get a link in your package or via private message.
Prefer to build your own from kit with parts and PCB? Or would you like a complete solution in a nice metal enclosure? Check out my other listings, I may have them.
The set of parts includes:
C1, C2, C17, C18 2n2
C3, C19, C25, C32 220M/35V
C4, C20, C26, C33 100n
C5, C21, C27, C34, C55, C56 100n
C6, C7, C8, C11, C14, C15, C16, C22, C28, C31, C36, C47 10M/35V
C9, C12 2200M/35V
C10, C13 680n
C23, C43 470n
C24, C44 10p
C29, C45 3M3
C30, C46 33p
C35, C37, C48, C49 100p
C38, C50 220p
C39, C51 15n
C40, C52 330p
C41, C53 68n
C42, C54 47M/35V
D1, D2, D3, D4, D5, D6, D7, D8 1N4002
Q1, Q3 BC546
Q2, Q4 BC556
R1, R6, R10, R15 10
R2, R3, R5, R7, R11, R17 220
R4, R8, R12, R19, R24, R36 2k2
R9, R14, R27, R29 220k
R13, R28 1M32
R16, R18, R25, R30, R31, R37 47k
R20, R23, R32, R35 2k7
R21, R33 5k6
R22, R34 100
R26, R38 300
RV1, RV2 4k7
RV3, RV4 22k
U1 LM317
U2 LM337
U3, U6 TL071
U4, U5, U7, U8 NE5534
J1, J5, J6 3-pole PCB terminal block
J3, J7 2x3 pin header 2,54 mm
J4, J8 1x3 pin header 2,54 mm
All parts are new and from reputable distributor, not some Chinesium.
Category: Electronics
Published on: November 1, 2025
Views: 2
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About the trader
Verified profiles
Electronic enthusiast, IT engineer from Slovakia, EU. Check my web site for more info.
I am a long time ebayer with 100% feedback - see my profile at https://www.ebay.com/usr/mek747474
Buy and sell with confidence. I am a real person looking to trade, not scam like many others.
About shipping: I ship with Slovak Post or Packeta (to countries where Packeta supports it), and always with tracking. My shipping prices in listings are estimates. Contact me if you want to know the exact shipping price. I also combine shipping. If you buy multiple items and pay shipping for all of them, I will send all in one package and reimburse you with any remaining amount.
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