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Old 4th May 2008, 07:34 PM   #11
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Sorry but 6N1Ps in my Promitheus Apollo preamp sound dull and not musical at all in my system.

I have rolled most of the best 6922s, 7308s, 6DJ8s, 6N1P-EBs and special 6N1Ps (from Promitheus Audio) but I choose Siemens PCC189s are among the best sounding tubes in my system then 7308s and 6DJ8s (both have less buzzing sound than 6922s).
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Old 5th May 2008, 04:35 AM   #12
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I've subbed the "Winged C" Svetlana 6N1P into a couple of chinese amps which had tubes labelled 6N1P. In every case it was a vast improvement.

This is what the 'Winged C' advertisement says:

The 'Winged C' 6N1P is a miniature glass-envelope small-signal dual triode intended for use as a line-level amplifier or driver in high-quality audio amplifiers. Except for higher heater current consumption (600mA vs. 365mA), it is a direct plug-in replacement for the 6DJ8, ECC88 or 6922. You cannot use it in Audible Illusions, Balanced Audio Technology or Sonic Frontiers preamps due to the limitations in their power supplies. Features include very low distortion - optimised for line stages, internally shielded between sections, higher plate voltage and dissipation ratings and larger cathode than 6DJ8 types, giving it longer life and more transient current capability. This tube has a big, musical sound with better dynamics than most 6922s. Its cathode is huge and offers a lot of drive. It performs extremely well as a driver or audio stage in power amps, lines stages and in some preamps

Cheers,
Ian
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Old 5th May 2008, 01:04 PM   #13
Hi_Q is offline Hi_Q  England
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As I was ordering some replacement output tubes in my amp, it seemed a good idea to order some new 6N1 pre-amps also. Same make, Svetlana, but these were much cheaper than the Svetlana's I ordered before. When they arrived I noticed that the logo, make and tube number were slightly different. The logo had changed from a squashed 'S' to a circle enclosing a large letter 'C'. Also the print had changed from gold to Black and the 'SVETLANA ELECTRON DEVICES' to just simply 'SVETLANA'. Incidentally the new circled C was also printed on the box bearing the Svetlana name. However, there was also something different about these tubes. The older tubes, despite nearly 2 years of use, still had bright sparkling pins yet the new 6N1's were rather dull and required some cleaning. There was also the clear fact that these 6N1's were not lighting up anything as brightly as the older ones and it had a very marked effect on the amplifiers performance. After some weeks of trying to convince myself that these new 6N1's were probably satisfactory, I experimented one evening by re-tubing with the older gold printed tubes. The effect was amazing and opened up the top end again and returned that magical 'air' that has to be experienced to be fully understood. So this post serves to highlight the very important fact that one type of 6N1 may not sound like another so we should be careful not to base our experiences on one particular batch, let alone brand. It really is the same effect we get with all thermionic tubes leaving us with our very own brand preference whether it be a 6922, EL34, KT88 etc. In respect of replacing a 6N1 with a 6922 I would say No! The amplifier where the 6N1 is fitted may be using the extra high voltage this valve allows and a 6922 would be operating out of its limits. You can fit a 6N1 in place of a 6922 providing the power supply can provide the extra heater current and you may have to experiment with the biasing.
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Old 5th May 2008, 06:32 PM   #14
L700 is offline L700  Malaysia
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yeah not all 6922 can direct replace with 6N1P me already check with spec it can be use just need replace with bigger amp transformer even work with 6N23P i compare with EH 6922 , Voskhod 6N1P-EB and Voskhod 6N23P.Found 6N1P-EB sound better for my ear my 6N1P manufacture Nov 1988 the pin still shinning
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Old 13th May 2008, 07:41 AM   #15
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6N1P sounds better than the 6922 I've tried, but I get 10dB more noise compared to quiet 6922.
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Old 15th May 2008, 02:14 PM   #16
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On the other hand the 6922 was only operating at 35V while 6N1P was at 45V in the same circuit, so probably not a fair comparison.
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Old 31st May 2009, 12:05 PM   #17
arnauby is offline arnauby  Norway
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Anybody have tried to replace 616Ns with ECC85?
I have a Yaqin mc10-L and its works vell. Thanks.
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Old 31st May 2009, 05:14 PM   #18
arnauby is offline arnauby  Norway
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Anybody have tried to replace 6N61p with ECC85?
I have a Yaqin mc10-L and its works vell. Thanks
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Old 31st May 2009, 05:23 PM   #19
Hi_Q is offline Hi_Q  England
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Quote of an earlier post on this subject with a Yaqin MC10L-

Well it has been some months of trial but I can now report on my own findings regarding replacement of 6N1's with ECC85's. I fitted ECC85 valves in the front end of each channel and my initial feelings were that the top end was just slightly lifted at the expense of the lower middle range. I did not need this extra top end as the Tannoy speakers here provide enough and I found it difficult to decide if the overall effect was really an improvement or a degradation. Now my ears are pretty shot now as I am over 60 but one day a young friend of mine in his 20's came to listen to the amp. When he entered the room he put his hands to his ears and said "Wow!, There is a high pitched whistle like a cat scarer in your house". It was coming from the left hand channel of the amp so I quickly refitted the 6N1's and everything was fine. I also noticed that the amp was now giving me the fuller sound stage that it of course had before I made the changes. So from my point of view, for what it is worth, I would not recommend spending $$ to fit ECC85's to your Yaqin, just treat it to some Svetlana 6N1 Golds, if you can find them.

In short, the ECC85's made the amp a little unstable so if you do decide to fit I recommend some oscilloscope checks at the time
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Old 31st May 2009, 09:39 PM   #20
arnauby is offline arnauby  Norway
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Ok, Svetlana are rebrandet Reflektor tubes. Al the 6N1p tubes coms from Russia.
6N1 from China.
The best Russian 6N1p tube is made in VOSKHOD and have a rocket pickture on the glas.
What you dont vant is thos who are made at reflecktor after 1990.
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