First tube after IV

[beamnet]

Hi,

I am going to put a USB interface in my amp.

Now i guess i need to buffer the DAC output.

I am doubting between AD1852/3

One has I out the other V out.

i want to buffer with tubes.

I have availeable:

6sn7
7193/e1148 (6j5)
ECC81 telefunken
ECC88 Siemens
5687 various brands
6ej7 (to mu-stage the above?)
EF22 (look cool!!)

I know the 6sn7 and the 7193/e1148 (6j5) in their audio qualities.

But do the other have potential too?

I like weird tubes, a m concidering pencil too...

Bas

 

[Eli Duttman]

The 5687 is a NICE tube. TungSol black plates enjoy a fine reputation. The 5687 is GOOD wired common cathode and superb as a cathode follower (HIGH gm).

 

[ilimzn]

EF22 is a remote cut-off pentode, so not suitable (unless you were building a dynamic compressor...)

 

[beamnet]

Not suitable for triode strapping?

Bas

 

[ilimzn]

Not suitable for triode strapping?
Bas

No, you get a variable mu triode.
It may be suitable for a cathode follower in some circumstances, or a capacitance multiplier, or a very low input level amp with low gain (defined by feedback), but even then it will not be as good as a sharp cut-off pentode (triode strapped or not).

 

[beamnet]

clear!