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#1 |
diyAudio Member
Join Date: Aug 2017
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I am just wondering
Will it be a good idea to use opa 1632 for say a preamplifier, Which have susy. And output them to a discrete transistor for better drive? 1632 have internal servo.. Or just build something like a balanced bba3 or aleph p will be better? What are the advantages quality wise.musicality .thd, harmonics etc.. Please shed some lights. |
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#2 |
The one and only
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Why not? TI licensed the patent from us....
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#3 |
Official Court Jester
diyAudio Member
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as far I remember , that chip likes lower values for Rin ?
worth checking datasheet besides that , good sounding one , I did use it as final stage , after xformer I\V DA conversion , where Rin(s) were also acting as adequate load on xformer secondary , resulting in proper linearity
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#4 |
diyAudio Member
Join Date: Sep 2006
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Isn't Russ from twisted pear audio did something similar?
Maybe i'm wrong, you can check on their site, and here on this forum... |
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#5 |
diyAudio Member
Join Date: Sep 2009
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juma gave it a shot...
Simple Circlotron with Lateral MOSFETs But I suspect you want a more conventionnal arrangement, I would love a single OP pair design with the 1632 as well, laterals? |
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#6 |
diyAudio Member
Join Date: Aug 2017
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So..
I'll just stick this in front of any preamp say ba3? Susy ba3. Sounds right? |
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#7 |
Official Court Jester
diyAudio Member
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why in front of preamp , if you making a preamp itself?
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#8 |
diyAudio Member
Join Date: Aug 2017
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Susy opamp + preamp.. Lol I don't know how to design and make the best of what I can. That's why I am asking
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#9 |
Official Court Jester
diyAudio Member
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I mean - that chip is capable of being preamp itself , only care is range of preferred Rin values , so it'll need buffer in front , as Juma made it in his application for Circlotron
read datasheets and related papers, think about possible parts you have for input buffers (JFets?) , do not underestimate need for decent power supply ...... and when you done with preliminary thinking about approach and concept , write back here
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#10 |
diyAudio Member
Join Date: Aug 2017
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Worthwhile to make a jfet complementary input? Output 1632? Or just opa 1642 1612 like what other does? I see this can be very high end as well... Corus Jeff Roland.
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Thread | Thread Starter | Forum | Replies | Last Post |
Bias voltage for Class A/B output and output transistor choices | maggiesnmacs | Solid State | 20 | 6th May 2016 04:26 AM |
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