qr amplifier - made in Italy

[Stee]

Hi,
this is my idea
a special system with resistors differential stage
and inverting buffer for HQ negative feedback accuracy 🙂

 

[JMFahey]

Can you say something about it?
Thanks.

 

[Stee]

2 x Deluxe Current Feedbackk with DC Servo Power Amplifier Kit Based on Hdam SA | eBay

the idea is to isolate the gain of complementary differential stage

is precisely the input stage that produces differences between the pnp and npn rails
This is because moving very low currents

so if the difference of currents occurs between two large buffer is expected to sound more balanced

 

[TANDBERGEREN]

Ah.
This is the Maranz MA9.
Should have recognized it by the schematics alone.
NICE amp.

 

[Stee]

and this is a clone of M9

Jeff Rowland😎