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Old 12th June 2006, 01:27 AM   #21
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Hi, I kindahave the same amp, luckly without any problems. Question will the difference be a lot if i change ALL the chinese valves by, russian? Or is the amp to cheap to make a big difference?

This is my amp http://cgi.benl.ebay.be/2002-MRLIUNG...QQcmdZViewItem
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Old 12th June 2006, 02:59 AM   #22
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I purchased the 2006 MR'LIUNG KT88 model on ebay from them.Had an Intermediate problem on one channel.Listened very shortly before sending it off for repair.

They paid for all the fees.

There was some solder splash from one of the resistors grounding the circuit on one channel.Also the 6N11 in this amp has to be matched very well.The amp was off 1db per channel because those tubes were not closely matched.

The amp gets very hot,but i did end up selling it
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Old 5th November 2009, 06:06 PM   #23
giz is offline giz
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hi , my first post on this site as ive only just got into valves myself ,
i just bought a headphone valve amp with the same numbers you have mentioned,
on ebay item number :250524338114 (and it was silly cheap £22)tenner for a spare valve as well ,hope this helps with you !!
i have a few things to ask you guys if you can help ,
firstly is it any good ?
can i use it as pre amp to our rig (to get that warm glorious sound )
and we play DNb (drum and bass ) would i need a certain tube or mod to do this ,
cheers ,giz

any response would be good ,only just noticed how old this post is ,derghhhh ,lol

Last edited by giz; 5th November 2009 at 06:17 PM.
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Old 5th January 2010, 03:34 PM   #24
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Send a message via ICQ to UssrTradeCom Send a message via AIM to UssrTradeCom Send a message via MSN to UssrTradeCom Send a message via Yahoo to UssrTradeCom Send a message via Skype™ to UssrTradeCom
Hello I think this topic relevant,

If somebody wanna 6n6p tubes, please feel free to pm me.

Thx, USSRTRADEcom
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Old 7th April 2011, 12:30 AM   #25
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Default 6H6p vs ECC99

Quote:
Originally Posted by beamnet View Post
On ebay, aseller of 6n6p tubes states they can be substituted with ecc99 (jj electronics). It seems like a close match to me..just heater rewiring to be done..

anybody any thoughts on that?
Used as a white follower headphone amp, the JJ ECC99 appears to be very similar but half the distortion of the Russian 6H6p.
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Old 7th April 2011, 12:49 PM   #26
Tfan69 is offline Tfan69  Italy
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don't mess with heater rewiring, check the ebay for the russian tubes or try something like Tubes-Store.com - Vacuum tubes, capacitors, nixie, sockets. Wholesale & retail trade. Worldwide shipping.
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Old 4th June 2011, 03:51 PM   #27
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Quote:
Originally Posted by argo View Post
Chinese 6N11 is more like Russian 6N23P-EV or western 6922/E88CC
Chinese 6N23 would be Russian 6N23P or western 6DJ8/ECC88
Chinese 6N1 is Russian 6N1P
Chinese 6N2 is indeed Russian 6N2P or as quoted a western 6AX7 (was there ever such tube?)
Chinese 6N6 is Russian 6N6P - NO DIRECT Western substitute. Nevertheless quite good tube in right application.

I think the Russian equivalents are easier to find than original Chinese tubes nowadays and as for 6N1/6N1P or 6N2/6N2P the Russian made have also these ruggerized EV versions available but Chinese dont.
So are Soviet 6N23P an exact drop in replacement for Chinese 6N11J as in pin for pin and no voltage changes just roll them in ?
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Old 4th June 2011, 10:09 PM   #28
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Since the Russian tube system is a separate system from what the rest of the world has used since the early years, you should research on the web your self, what russian numbers cross ref to. I'd get spec sheets and check the pinouts before powering up. Much of what's said on the web is wrong. My tube guru friend says some of the best tubes ever made are Russian, so it may be worth it. The problem I ran into when designing a tube headphone amp was that 2 large tubes in a white follower were only enough if the headphones are 300ohms. If they were ever going to be 32 ohms, then a 6BQ5 SE and output transformer might be a better approach. Until I can afford the Sennheiser 660's, I decided to put it off.
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Old 4th June 2011, 11:04 PM   #29
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Hi,

Quote:
My tube guru friend says some of the best tubes ever made are Russian, so it may be worth it.
I still have to come across a single Russian tube I'd consider exceptional.
Mediocre at best but gladly they made stuff we did not have in Europe.
Which is nice but nothing more.

One thing about using NOS Russian tubes is that you just can't treat any of them as an equivalent of anything American or European...
That said, equivalents rarely are equivalent in the real world.....

Cheers,
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Old 5th June 2011, 02:09 AM   #30
AJT is offline AJT  Philippines
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i am very happy with my russian 6H23 preamp....
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