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Old 22nd June 2020, 11:40 PM   #141
drjlo is offline drjlo  United States
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Join Date: Jul 2005
Location: SoCal
Quote:
Originally Posted by pelliott View Post
I am liking the 8800 quite a bit better than a borrowed 8600 in my system. The 300b is a bit soft for me at either end.
8600 is a 300B SET after all, although I find it to have better detail and extension compared to the average 300B SET amps.

Before drawing conclusions re 8600 being soft, I can suggest you try the 1960's RCA 6211 tubes in 8600's 12AU7 spots. These 1960's tubes are quite cheap on the Bay and synergizes with 8600 to bring out the top end into balance with the 300B.

Click the image to open in full size.RCA6211 by drjlo2, on Flickr

Last edited by drjlo; 22nd June 2020 at 11:53 PM.
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Old 23rd June 2020, 09:55 PM   #142
pelliott is offline pelliott  United States
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It is all very subjective. I did say "a bit soft" This was not a complaint or a declaration of something wrong. The TU-8600 is a very good amp, but I have heard 300b amps sound far more open and detailed. The TU-8800 is not perfect either but more perfect for me in my system in my room than the TU-8600. I am a realist and just because I own a piece of kit my lack of ego allows me to evaluate honestly.
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Old 24th June 2020, 05:59 PM   #143
SonnyMarrow is offline SonnyMarrow  United States
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I modded my TU-8800! I've done the resistor, cap, pot, and transformer upgrades and really enjoyed the amp. Yet one thing that bothered me was the stupid placement of the Z-out jumpers. To adjust the headphone output impedance, you have to remove the face plate and top of the case (which requires removing the big tubes). Super annoying, so I cut a hole in the case and bought jumpers with extended handles on them. Works great, and you can barely even see the cutout with the cover on.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Last edited by SonnyMarrow; 24th June 2020 at 06:05 PM.
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Old 24th June 2020, 07:03 PM   #144
pelliott is offline pelliott  United States
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Agreed the headphone jumpers are most inconvenient.
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Old 29th June 2020, 08:32 PM   #145
vkung is offline vkung  Canada
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Join Date: May 2005
Location: Vancouver BC Canada
review from Paul...

TU-8800 - MyAudioPhrenia
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