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2nd February 2013, 11:36 AM
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#1 |
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diyAudio Member
Join Date: Jul 2005
Location: milan
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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 
Last edited by Stee; 2nd February 2013 at 11:44 AM. |
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2nd February 2013, 04:00 PM
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#3 |
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diyAudio Member
Join Date: Jul 2005
Location: milan
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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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2nd February 2013, 04:41 PM
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#4 |
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diyAudio Member
Join Date: Jan 2011
Location: Fosser, Aurskog-Holand, Akershus, Norway.
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Ah.
This is the Maranz MA9. Should have recognized it by the schematics alone. NICE amp.
__________________
Sooner or later you end up with TANDBERG |
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3rd February 2013, 07:57 AM
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#5 |
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diyAudio Member
Join Date: Jul 2005
Location: milan
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and this is a clone of M9
Jeff Rowland
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