Marantz M9 clone in bridge

[Stee]

This project is intended for connection to bridge with input transformer
have diamond input solution and very low feedback (set to 40dB) 🙂

 

[Stee]

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 😕

 

[Stee]

from ebay

🙂

 

[sharbatgula]

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.

 

[Stee]

not yet

but I have a new project 😎
IPANEMA AMP

 

[Stee]

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