I replaced the volume pot on my tube preamplifier.

I replaced the damaged OE pot in my Krell pre with a TKD 2CP-2511.

I originally wanted a resistor ladder attenuator, but couldn't find one that physically fit in the limited space. So I settled on the TKD 2CP-2511 and, as @mulveling shared, it is fantastic, in terms of both sound quality and feel.

I ordered mine from Michael Percy and I am comfortable recommending both (the TKD and Michael Percy that is).

My understanding is that Goldpoint is working on a new subcompact resistor ladder attenuator suitable for space-constrained retrofits. 

Happy listening! 

@bolong

This VC should fit quite nicely and give you a substantial improvement in sound quality.

https://www.hificollective.co.uk/catalog/potentiometer/100k-tkd-2dp-2511-mc.html

TKD is a little hard to get in the US. Michael Percy is normally the best source, but I'm not sure whether he stocks motorized versions. Google him and reach out to him.

Good luck!

Maybe we need to pressure manufacturers to use better pots.

Too many audiophiles are incurious what is inside their components and never take the covers off, and some manufacturers take advantage.

Meanwhile, the 2P65CS is superb. The stepper mechanism (whose only function is to provide tactile and auditory feedback) is a thing of beauty, with its exposed gear and ball-bearing detent.

Unfortunately, the limited space in my Krell pre only allowed for a 25 x 25 mm form factor, but had I installed a 2P65CS in there I don't think I'd ever put the cover back on 😃