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Old 20th March 2006, 07:23 PM   #1
beamnet is offline beamnet  Netherlands
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Default 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
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Old 21st March 2006, 12:03 AM   #2
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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).
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Old 21st March 2006, 12:22 AM   #3
ilimzn is offline ilimzn  Croatia
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EF22 is a remote cut-off pentode, so not suitable (unless you were building a dynamic compressor...)
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Old 21st March 2006, 08:42 AM   #4
beamnet is offline beamnet  Netherlands
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Not suitable for triode strapping?

Bas
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Old 21st March 2006, 08:56 AM   #5
ilimzn is offline ilimzn  Croatia
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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).
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Old 21st March 2006, 08:59 AM   #6
beamnet is offline beamnet  Netherlands
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clear!
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