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Old 2nd February 2013, 11:36 AM   #1
Stee is offline Stee  Italy
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Default qr amplifier - made in Italy

Hi,
this is my idea
a special system with resistors differential stage
and inverting buffer for HQ negative feedback accuracy
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Last edited by Stee; 2nd February 2013 at 11:44 AM.
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Old 2nd February 2013, 12:20 PM   #2
JMFahey is offline JMFahey  Argentina
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Can you say something about it?
Thanks.
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Old 2nd February 2013, 04:00 PM   #3
Stee is offline Stee  Italy
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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
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Old 2nd February 2013, 04:41 PM   #4
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Ah.
This is the Maranz MA9.
Should have recognized it by the schematics alone.
NICE amp.
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Old 3rd February 2013, 07:57 AM   #5
Stee is offline Stee  Italy
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Default and this is a clone of M9

Jeff Rowland
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