The BA-3 as preamp build guide

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Tomcat1969

Member
Joined 2019
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I got round to swapping the stepped att' over from my phono stage to the BA-3.

It uses takman resistors and naked Zfoil resistors. It was an immediate and obvious improvement. I knew it would be.

It's built round a Blore Edwards switch and is 25k.
 
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spryor

Member
Joined 2013
These last few posts have me thinking about upgrading the volume control on my BA3FE. I built mine with a 23 step attenuator off ebay for $25. It sounds great at is... but of course I'm wondering what else might be possible with an upgrade. Curious to know what others would recommend? I've looked at the Goldpoints, browsed through the impressive selection of stepped attenuators at hificollective. I don't know enough about how they work to evaluate the various options, so any suggestions welcome!
 
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Tomcat1969

Member
Joined 2019
spryor said:
These last few posts have me thinking about upgrading the volume control on my BA3FE. I built mine with a 23 step attenuator off ebay for $25. It sounds great at is... but of course I'm wondering what else might be possible with an upgrade. Curious to know what others would recommend? I've looked at the Goldpoints, browsed through the impressive selection of stepped attenuators at hificollective. I don't know enough about how they work to evaluate the various options, so any suggestions welcome!
Click to expand...

The one I showed in my post above is a kit from hi-fi collective.
 
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evershumi

Member
Joined 2014
BA-3 preamp done. it's delicious

I am looking for a dac to occupy the free space. any suggestion? must have coaxial, optical, usb and Bluetooth.
Thanks
 

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myleftear

myleftear

Member
Joined 2017
Paid Member
basic questions

Hi!

I think I'll settle down on the BA-3 for nursing my F4...
It's clear that this is a great combo, but I am confused about the difference between the BA-3 as line-stage or as pre-amp...

as a line-stage, it hasn't no attenuator/selector, is that it?

The other question: What would be a good (good as in as good as reasonably feasible) PSU for it?

Thanks!
david
 
codyt

codyt

Member
Joined 2019
Paid Member
I recently picked up a Focusrite Scarlett Solo and have been having fun measuring distortion with REW. Specifically, it's really proved to be the missing link to truly understanding/optimizing the P3 pot in my BA3 pre. The one thing that I have a question about are a few consistent weeds I'm finding in my measurements. I'm seeing notable spikes at 2.9k, 4.9k, 6.8k and 8.8k. They present consistently on both channels and are not impacted when adjusting P3. Has anyone else seen this in their BA3? Or am I overlooking some obvious explanation for these spikes?
 

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