First tube after IV

beamnet · 20th March 2006, 07:23 PM

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 · 21st March 2006, 12:03 AM

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 · 21st March 2006, 12:22 AM

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

beamnet · 21st March 2006, 08:42 AM

Not suitable for triode strapping?

Bas

ilimzn · 21st March 2006, 08:56 AM

Quote:

Originally posted by beamnet
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 · 21st March 2006, 08:59 AM

clear!

20th March 2006, 07:23 PM	#1
beamnet diyAudio Member Join Date: Jun 2004 Location: enschede	First tube after IV 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

21st March 2006, 12:03 AM	#2
Eli Duttman diyAudio Member Join Date: Apr 2004 Location: Plainsboro, NJ	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). __________________ Eli D.

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21st March 2006, 12:22 AM	#3
ilimzn diyAudio Member Join Date: Feb 2005 Location: Zagreb	EF22 is a remote cut-off pentode, so not suitable (unless you were building a dynamic compressor...)

21st March 2006, 08:42 AM	#4
beamnet diyAudio Member Join Date: Jun 2004 Location: enschede	Not suitable for triode strapping? Bas

21st March 2006, 08:59 AM	#6
beamnet diyAudio Member Join Date: Jun 2004 Location: enschede	clear!

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