Help choose a pot for a passive preamp

[dublin78]

Hi

I want to install a pot to use as a passive volume control between a Cambridge Audio DACmagic 200m and a Aiyima A07 integrated amplifier.
The DAC has an output impedance of 50 ohms (I am using the unbalanced outputs).
The amplifier has an input impedance of 23kOhms @1kHz.
What makes my question slightly different is that the amplifier is mounted out of sight in a case (with a dedicated power supply), and I want to leave the integrated volume control at circa 50% so that kids cannot blow my speakers. I do not want to use the DAC volume control for separate reasons.
I am just going to use an APLS blue with less than 20cm of interconnect cable each side.

What value pot should I use?

 

[rayma]

The typical 10k stereo log pot will be fine. If necessary, 20k will also do.

 

[dublin78]

Thanks rayma. I have purchased one from Hifi Collective.

N.B. to others i have accidentally purchased fakes in the past, with imbalanced volume at low levels, and who knows what impedance. Hence the purchase from Hifi Collective.

 

[rayma]

Significant channel imbalance at lower levels in cheap volume controls is fairly common.

 

[Mark Tillotson]

Linear taper are more likely to be channel-matched, and active volume circuits can use linear pots, one of several advantages.

For passive attenuation adding a switchable L-pad before the pot can extend its useful matched range at low volume.

 

[profiguy]

10k lin would be my choice.

 

[Bare]

One can do better than a Alps blue. Even the Cheap Chinese SMD stepped attentuator is immediately /obviously better sounding.

 

[rayma]

Certainly, if the resolution is acceptable, discrete resistors will be better.
https://www.ebay.com/itm/404182871058

 

[stocktrader200]

I have a Denon dra435r which has a passive preamp input > vol > power amp < tone controls
Works better then expected but is noisy as the amp has a gain over 200 with bass and treble maxed.

 

[rayma]

Why would you do that? Turning up the bass and treble, besides wacking the frequency response,
lowers the overload margin and increases both distortion and noise.