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Old 8th November 2017, 12:55 PM   #11
Cifte12AU7 is offline Cifte12AU7  United States
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Thank you! What recommendations do you have for an upgrade? Id be happy to do it.
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Old 8th November 2017, 04:44 PM   #12
vkung is offline vkung  Canada
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there are a lot of replacement
if you google on the web, you can find your preference..
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Old 9th November 2017, 12:32 AM   #13
Cifte12AU7 is offline Cifte12AU7  United States
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Viktor, I was thinking:

1. Burr Brown/TI OPA2604AP
OPA2604AP Texas Instruments | Mouser

or

2. Analog Devices OP275GPZ
OP275GPZ Analog Devices | Mouser

Will I be ok with one of these? Thank you kind Sir!
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Old 9th November 2017, 12:40 AM   #14
vkung is offline vkung  Canada
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ELEKIT speaker

you can use TI2777 too
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Old 9th November 2017, 01:56 AM   #15
Cifte12AU7 is offline Cifte12AU7  United States
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Thank you Viktor!
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Old 10th November 2017, 01:27 PM   #16
Steve Morley is offline Steve Morley  Canada
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Default CIFTE: Try the Genalex KT77

My favourite tube from the EL34 family is the reissue (Russian) Genalex KT77. They are more expensive than the basic E-H EL34 but worth it as far as I'm concerned.


Check with Victor to make sure the power trans in the 8200 can handle the increased filament demands of a pair of KT77s versus stock 6L6s.


Steve
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Old 12th November 2017, 04:41 AM   #17
HarryY is offline HarryY  United States
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Victor,

Are you talking about Changing the op amp in the DAC?
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Old 12th November 2017, 04:43 AM   #18
vkung is offline vkung  Canada
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yes
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Old 12th November 2017, 05:07 AM   #19
HarryY is offline HarryY  United States
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Thank you
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