Best way to dampen a micro-vibrating Printed Circuit Board inside an amp? Thanks!

@yoyoyaya Holy Grail Record

Do you remember a previous discussion about a rare $1,200 record for customs declaration. We never found out what that record was either.

@mylogic - +1 for your powers of recall/association. Now you mention it, yes - I do indeed remember that discussion.

Let's see if we find out this time.

I note that it has a PCB, so all the point to point wired tube amp owners can rest easy in their beds.

Tubes can have microphonics, and they are easily measured and heard. Soli state, not so much. P-P wiring does away with PCBs, but the wires can ring - audibly and measurably in a P-P wired tube amp also. So at what frequencies did the micro-resonances occur? You can change the frequencies by mass loading the PCB or you can absorb them by mounting the PCB on Sorbothane.

@panzrwagn “what frequencies did the micro-resonances occur?”

Don’t hold your breath or bank on an answer

I modify, dampen quite a lot inside a chassis, even those with point-to-point wiring. I start with isolating the onboard power supply transformer from the chassis, as all transformers vibrate / resonate, which is one of the reasons transformers are "potted" in some designs. I use many different materials, such as a Dynamat type product and some heat pipe tape. Types of silicon are also excellent. Ignore those nonbelievers. Amazing what chassis damping can do for the performance. Enjoy! MrD.