replace 6N3 tube preamp with mullard E555L

[erez1012]

Hi all
just buy from eBay this kit:
6N3 Tube HiFi Buffer Audio Pre Amplifier Amp Board with Transformer | eBay

according to the Reviews this is nice pre.
the schematic and some picture are attached.

Friend give me Mullard E55L (8233)*2 tubes, i read on the net that they are nice tubes. can i replace them with the 6N3 tube from eBay?

The power is 170ac+6.5ac

Thanks

 

[MrCurwen]

6N3P cannot be replaced by E55L for this kit. It would require redesigning component values, and furthermore 6N3P is a double triode, meaning there are two triodes in a single glass envelope. E55L is a single pentode; even if it's triode strapped and has the same base, you would need to add two sockets and get two more E55L's.

 

[erez1012]

🙁
thanks for the great answer

maybe i can replace the 6n3p with more quality tubes?

 

[erez1012]

Hi again
Can i replace it with the: GE JAN 5670w
i found that they good and they improve the sound.
What do you think?
Thanks

 

[erez1012]

Hi again
Can i replace it with the: GE JAN 5670w or 6N3P-DR
i found that they good and they improve the sound.
What do you think?
Thanks

 

[lexx21]

Yes you can. The 6n3 is a Chinese clone of the GE 5670w, so as long as the pin out is the same then you can plug it in and go.

 

[piano3]

keep those superb E55L for some suitable future project!

 

[erez1012]

hi
i order the 6N3P from the 70's and not the 6N3P-DR because in the datasheet the mav voltage is 150v and my transformer is 170 ac.
the max volt on 6N3P is 300v.
how the quality of the 6N3P ?
thanks

 

[MrCurwen]

6N3P has a maximum anode voltage of 300 volts. 6N3P-DR is a special quality version (pulse duty?) of the tube; it doesn't have a lower max Va.

6N3P is a great quality tube; there's no need to replace it as such.

 

[SY]

according to the Reviews this is nice pre.
the schematic and some picture are attached.

They misspelled "guano."