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Old 5th February 2013, 09:48 AM   #1
Stee is offline Stee  Italy
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Default Marantz M9 clone in bridge

This project is intended for connection to bridge with input transformer
have diamond input solution and very low feedback (set to 40dB)
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Old 7th February 2013, 05:56 PM   #2
Stee is offline Stee  Italy
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Default new version

the diamond buffer stage drives a voltage then a current stage
with exactly the same mode

the gain is different only for feedback shutter
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Last edited by Stee; 7th February 2013 at 06:00 PM.
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Old 19th June 2015, 08:57 PM   #3
Stee is offline Stee  Italy
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Default from ebay

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Last edited by Stee; 19th June 2015 at 09:04 PM.
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Old 19th July 2015, 09:29 AM   #4
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Hi,
I've seen this amp on aliexpress and e-bay too. So, have you tried it? Someone on diyaudio has written that the measured slew rate is very low 4V/uS for a current feedback amplifier.
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Old 19th July 2015, 01:39 PM   #5
Stee is offline Stee  Italy
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Default not yet

but I have a new project
IPANEMA AMP
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Old 20th July 2015, 06:09 AM   #6
Stee is offline Stee  Italy
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Default modify the original VAS current

a solution can be this
doubling the current that drives the output stage follower
just add a resistor in parallel for each branch
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