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AB100 Class AB Power Amplifier
AB100 Class AB Power Amplifier
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Old 17th August 2019, 06:00 PM   #661
Karl vd Berg is offline Karl vd Berg
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From OnSemi and ST manufacturers' datasheets, I see slightly different internal schematics from each TIP142 and TIP147 (resistors)...

Which of them is preferable?
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Old 17th August 2019, 06:04 PM   #662
osscar is offline osscar  Latvia
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For me ON semi seems little better..
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My DIY so far: two Leach amps,two Pass AB100, Pass F5, B1 buffer, Hiraga le monstre, two LM3875, LM1875, OPA549, 6C33C SE, GU32 PP, 6p3c-e PP, Marsh headphone amp.Phono - OBH-8se, Pacific RIAA, inDiscreet Phono, MF A1 Clone, Whammy headphone amp.
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Old 17th August 2019, 06:06 PM   #663
Mark Johnson is offline Mark Johnson  United States
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AB100 Class AB Power Amplifier
Build Left channel with ST devices and Right channel with On Semi devices. Listen to each (in mono). If you have a strong preference, implement that in both channels. If you don't have a strong preference, leave the amp alone and start listening in stereo.
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Old 17th August 2019, 07:02 PM   #664
Karl vd Berg is offline Karl vd Berg
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Thanks, Osscar!

Mark Johnson, very interesting idea! Could also mix the 2 manufactures' parts.
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Old 17th August 2019, 07:34 PM   #665
prasi is offline prasi  India
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AB100 Class AB Power Amplifier
most probably you wont be able to detect any differences in sound
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Old 20th August 2019, 12:13 AM   #666
Freecrowder is offline Freecrowder  United States
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AB100 Class AB Power Amplifier
So Osscar, I have not built a stereo pair yet to listen to in my system. I will compare the A40 to the AB100 when I do. I have had the A40 for over 10 years and it is the best amp I own right now. I also have the Honeybadger and it is a close second. I need the power though for running maggies.
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Old 20th August 2019, 07:23 PM   #667
osscar is offline osscar  Latvia
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thank you for information.
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My DIY so far: two Leach amps,two Pass AB100, Pass F5, B1 buffer, Hiraga le monstre, two LM3875, LM1875, OPA549, 6C33C SE, GU32 PP, 6p3c-e PP, Marsh headphone amp.Phono - OBH-8se, Pacific RIAA, inDiscreet Phono, MF A1 Clone, Whammy headphone amp.
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