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Old 18th October 2013, 02:11 PM   #1
400kg is offline 400kg  Turkey
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Default nirvana amplifier

my 1mhz cfa amplifier.
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Old 18th October 2013, 05:45 PM   #2
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Looks good. Tell us more about it.
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Old 18th October 2013, 06:55 PM   #3
Bensen is offline Bensen  Belgium
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Did you build it?

I'm really curious to know whether this one is sounding better than your sapphire amp (BJT drivers and Jfet-input).
Must say that the SOA of the 216/79 is not that supper for such an output stage.
Classé did used these Fet's in some of there amps as drivers and changed them in later amp's to lateral fet's.
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Old 18th October 2013, 07:37 PM   #4
400kg is offline 400kg  Turkey
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is working very stable.
very detailed sound.
MOSFETs connected to the main cooler currents separate coolers increases.
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Last edited by 400kg; 18th October 2013 at 07:43 PM.
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Old 18th October 2013, 07:55 PM   #5
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technically better than sapphire. nirvana, the better feedback. JFETs lowest wants feedback resistance. it is unlikely that a high-powered amplifiers
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Old 25th November 2013, 05:04 PM   #6
400kg is offline 400kg  Turkey
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Default update

update
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Old 25th November 2013, 05:51 PM   #7
MiiB is offline MiiB  Denmark
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The laterals are no longer to get.. Those were the best part for preamps, here for drivers i am not so sure..
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Old 29th November 2013, 08:27 AM   #8
400kg is offline 400kg  Turkey
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Default Multisim thd test

8ohm 100w 1khz
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Old 3rd December 2013, 01:55 PM   #9
400kg is offline 400kg  Turkey
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Default final update

final update
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Old 6th December 2013, 07:10 PM   #10
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Hello. Papa do not you have any suggestions for improvements to this amp?
400kg says it is like marantz schematic but with mosfet drivers instead of cascoded bjt drivers.
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