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ACA amp with premium parts
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Old 8th May 2019, 08:40 AM   #141
davidjt is offline davidjt
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ACA amp with premium parts
Many thanks. That clarifies things perfectly.
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Old 18th May 2019, 03:17 AM   #142
wg45 is offline wg45  United States
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I recently bought a balanced preamp to go with my ACA 1.6. I figured Iíd buy another ACA and run them as balanced monoblocks.

After ordering the second amp, I ran across this thread and thought Iíd update the second amp with the premium parts. One board finished yesterday and I should have the second board finished this weekend, if my home projects allow.

Iíll listen to the second amp and see if I can hear a difference for the better, comparing the first to the second. If I do, Iíll update the first amp with the premium part changes.
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Old 10th June 2019, 09:56 PM   #143
tooppy is offline tooppy  France
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Quote:
Originally Posted by wg45 View Post
I recently bought a balanced preamp to go with my ACA 1.6. I figured Iíd buy another ACA and run them as balanced monoblocks.

After ordering the second amp, I ran across this thread and thought Iíd update the second amp with the premium parts. One board finished yesterday and I should have the second board finished this weekend, if my home projects allow.

Iíll listen to the second amp and see if I can hear a difference for the better, comparing the first to the second. If I do, Iíll update the first amp with the premium part changes.
Did you have the time for that comaparative listening ?
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Old 11th June 2019, 02:47 AM   #144
wg45 is offline wg45  United States
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Quote:
Originally Posted by tooppy View Post
Did you have the time for that comaparative listening ?
I did. I found a noticeable difference between the two amps- one ACA 1.6 stock and on ACA 1.6 modified following TungstenAudioís mods. (Post #31, I think).

The modded ACA was more interesting and lively. I could hear more details in the modded amp and easily pick out which channel it was driving. When I played each amp driving both channels, I preferred the modded one.

I bought the parts from Mouser. Maybe $50 total for both amps. The reworking of the first amp was a slight pain, but not too bad. Worth the time and money. I set the bias to 12.4v.

My current set up is high efficiency speakers, a balanced preamp and the ACA monoblocks balanced.
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