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Old 23rd February 2011, 09:01 PM   #1
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Default Best pots for headohone amps?

I'm designing a high-end Line level preamp that will have four tone controls, balance and volume pots. I'm wondering which pots will do the least damage, and be reliable over time? It's been suggested that nobody will know better than the headphone guys. I'm looking at the new TDK CP600 series (plastic element), the Audio Note pots (might be exactly the same thing), and some Noble pots (carbon element) that are apparently being discontinued. I heard a few bad things about the ALPS pots, so not sure about them. Any thoughts will be appreciated.
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Old 23rd February 2011, 10:58 PM   #2
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Will these pots all be linear, or some audio taper?
And will some or all be ganged (stereo) pots?
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Old 26th February 2011, 04:01 AM   #3
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I'm using them in a line level preamp that will have passive tone control sections (james style (similar to Baxandall with out feedback)). I've gone ahead and ordered 5 of the TKD CP600 series pots (100K Log dual), and am trying to get the Noble AP25's as well, if I can find some (They've been discontinued). These appear to be the best out there, unless you want to use switched attenuators that shows the reactive circuit elements an impedance that is consistant with what a regular pot would show, which I believe is out of my price range (I'd want spec'd gold contacts as in how thick is the gold etc.).
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Old 26th February 2011, 07:11 AM   #4
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Sounds like quite a project.....you should definitely post your progress and design here at diy.
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Old 26th February 2011, 09:36 AM   #5
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Michael Percy sells Noble AP25 http://www.percyaudio.com/Catalog.pdf

If 100K Panasonic motorized it's a very good alternative to Alps due to the fact are better tracking.

Also Michael Percy have TKD conductive plastic motorized.
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Old 1st March 2011, 11:48 AM   #6
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How about those:
Multi-Channel Rotary Fader | Penny + Giles
or "second best":
Rotary Fader | Penny + Giles
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Old 1st March 2011, 12:16 PM   #7
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Quote:
Originally Posted by gk7 View Post
Very good pots used for old ML stuff
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Old 1st March 2011, 06:15 PM   #8
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Michael Percy told me that because he's getting low on the Noble AP-25 pots, he's only willing to sell two to a customer. I need five.
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Old 1st March 2011, 06:20 PM   #9
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I had trouble finding pricing info on Penny and Giles pots, but I've been led to believe that they are way too expensive for me. It looks like I will be using the $35/each TKD CP-600 series pots, since Percy refuses to sell me more than 2 of the Nobles. This project requires 5 of these pots.
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