Valve Itch phono

[Salas]

I got some 70's ones with blacker anodes that the Ukranian guy told me were best specimen. They got a rocket sign on them.

 

[merlin el mago]

Thanks, I wish you Merry Christmas & a Happy New Year.

 

[Salas]

Merry Xmas to you and to all the guys!

 

[merlin el mago]

SELECTED DUO of 6N2P-EV 6N2P Voskhod 70s TUBES ECC83 12AX7 / MATCHED PAIR

Arrived SELECTED DUO of 6N2P-EV 6N2P Voskhod 70s TUBES ECC83 12AX7 / MATCHED PAIR, attached pics.

 

[merlin el mago]

Arrived the Kiwame & Caddock MK132 1% for RIAA

Great day, arrived also the Kiwame (for preamp) & the matched pairs Caddock MK132 1% tol. (for RIAA)

 

[merlin el mago]

Arrived SELECTED DUO of 6N2P-EV 6N2P Voskhod 70s TUBES ECC83 12AX7 / MATCHED PAIR, attached pics.

I'm in heaven with these tube rockets

 

[Salas]

They look mint. Ready to launch.

 

[merlin el mago]

Tubes launched, I'm a rocket man

 

[Salas]

So you substituted all those resistors in the build and listening with your matched tubes already?

 

[merlin el mago]

No changed the resistors, I only changed the tubes.

 

[Salas]

They brought more sound stage focus being well matched?

 

[merlin el mago]

Yes, also more harmonics, less harsh, a lot of less noise, simply is other phono: the best phono preamp I had listened (for the moment at least), I also ordered these tubes GENUINE NOS 1578 MELZ tube (6N8S, 6H8C, 6SN7) metal base hole plate :

One or more GENUINE NOS 1578 MELZ tube (6N8S, 6H8C, 6SN7) metal base hole plate | eBay

Have the power to ear a lot of more details: guitar, piano, voices, is really other level, is pure emotion and heart, vocal jazz is like you are there when Ella is singing, I don't have words to express all the big upgrade done with these tubes, surely when I refurbish mine Jadis JA80 I will substitute the 12AX7 for these incredible tubes.

If the change it's so big when change the resistors & when I receive the 1578 really I will have the best phono in the world, thanks Salas.

 

[Salas]

Those MELZ are top quality 6SN7s.

 

[merlin el mago]

Yes I know, I bought two tubes super matched pair, now I have in the preamp one metal base 6H8C/6N8S without hole plate & one metal base 6H8C/6N8S with hole plate, that's was also a big improvement vs 6H8C/6N8S Foton.

 

[merlin el mago]

What's the correct bias in mA?

Across R9 560R?
Across R10 33K or R11 560R?

 

[merlin el mago]

I mind is R9 & R10?

 

[Salas]

Around 3.5mA should be running through them.

 

[merlin el mago]

Thanks, for R9 can I use one green LED 2V?

 

[Salas]

Its not necessary. Only if you want to test it for fun.

 

[merlin el mago]

I do it in other tube preamp & like it.