Knobs!

No, not the Jeremys Paxman or Clarkson, but these:

Elma K1 knobs

Elma K1 knobs

They can be had with 4mm or 6mm shafts suiting both the 4mm shaft of the 2 pole 6 way Elma switch I got from HiFi collective I’m using, along with the 6mm shaft of the Vishay 50k logarithmic rotary potentiometer I got from Farnell.

Here’s the amplifier with the dimple knobs in situ:

Knobs with dimples

Knobs with dimples

I bought these from 4most electronics, who have a stock now of 19 of each of the 6mm and 4mm dimple and dome type.  Their website is bit out-of-date, but they are the main distributor for Elma (including audio quality switches) in the UK.  Haydn has been very helpful to me, so I recommend you contact him directly.

This might sound like a bit of paid advertising, but it’s unpaid; one of the hardest things I’ve ever found about DIY HiFi is finding hardware that looks as good as the circuitry sounds.  And finally, I think I’ve achieved it thanks to their kind help!

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