I replaced the volume pot on my tube preamplifier.


Replaced the two mono Alps pots in phono preamp with Tocos (Tokyo Cosmos), RV24 units. I heard good things about these pots on other forums. Fair bit of work getting them to fit into the Croft 25R. I had to loosen the tube boards and drill out the mounting holes for the larger threads. The pots were only $26 for both inc tax and shipping. Huge improvement in speed, clarity, solidity, and transparency. I'm blown away. 

noromance

I can think of many SS/hybrid manufacturers that avoid Blue Velvet pots.  But when it comes to pure valves I can only think of BAT and Aric Audio that do the same.  I am sure there are more, but it seems tube gear falls into the ALPS trap more easily.  Any help on other options (pre or integrated)?

"It's the damndest thing."
When I replaced the pots in two different tube preamps, I noticed an annoying trade off with the improved sound quality, transparency and air etc. Sibilance. This peed me off no end. The weird thing is that after about six hours or so over the next few days, it disappeared. I guess the carbon track needed to bed in or something. Anyhow, if you encounter this, give 'em time to run in. 

I just tried a new aftermarket volume control that turned out to be pretty good..it has remote as well. Relay based attenuator I bought off the 'bay from Ukraine. Though he also sells on Etsy. I don't have a link but sold by Serglobo. Hiend volume control Relay attenuator. 

I rolled the dice & bought the cheapest stereo version to give it a try. In my Aikido circuit preamp I perceived better dynamics right away. It's a pretty good attenuator for the money. I have no affiliation with the seller/designer.