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Are digital/stepped attenuators far more balanced than potentiometers?
Are digital/stepped attenuators far more balanced than potentiometers?
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Old 30th October 2019, 05:53 AM   #11
CowCat is offline CowCat
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Quote:
Originally Posted by abraxalito View Post
OK in a general sense to listen to or OK for channel balance? I'd not myself bother with any TPA3116-based amp as I've heard and played with that chip and moved on from it many years ago. There are plenty of options - more modern classD chips - which sound better than that one. STA326 is an open-loop FDA and so is very sensitive to PSU quality - particularly bass suffers if the power supply isn't optimized. Its much better than TPA3116 in the mid and HF with a reasonably low impedance PSU.
What kinds of class-D amps do you recommend? I currently own a TPA3251 amp and a TPA3255 amp. Both are cheap chinese implementations. Other than channel imbalance at very low volumes, they sound fine.
So, I reduce the amplifier volume to the point where there is no perceptible channel imbalance and reduce DAC or software volume.
I read that Allo Volt+ D is a fine amplifier despite being a dual TPA3118 amplifier.

Last edited by CowCat; 30th October 2019 at 06:04 AM.
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Old 30th October 2019, 06:39 AM   #12
abraxalito is offline abraxalito  United Kingdom
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I've yet to find a classD amp I would recommend in stock form. This is after all DIY audio. But yeah TPA3251 and TPA3255 are much better starting points for an amp than TPA3116. Channel imbalance has never bothered me, I'm so lazy I pretty much always use software volume control.
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Old 3rd November 2019, 07:34 AM   #13
CowCat is offline CowCat
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Quote:
Originally Posted by abraxalito View Post
I've yet to find a classD amp I would recommend in stock form. This is after all DIY audio. But yeah TPA3251 and TPA3255 are much better starting points for an amp than TPA3116. Channel imbalance has never bothered me, I'm so lazy I pretty much always use software volume control.
In my case, a lot of channel imbalance comes from computer fan noise.
Beucase my computer case is placed to the left of my speakers, fan noise affects the left speaker a lot.

I've felt a veil in front of the left speaker. I didn't know what the veil was until I realized it was my computer's fan noise.

Fan noise is problematic if you listen to music quietly.
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