Tube preamplifier

[gchrist]

Does anyone know of a tube preamplifier which is well documented, easy for diy and that has already been built before? I am searching for some time now to find an article like those published from Mr. Pass, for his series of preamplifiers, but to no avail. Can someone help pointing me in the correct direction.

I have found out about Pete Millett's low-mu preamplifier, from Audioxpress magazine 02/04, but I can not find anyone that has built this preamp nor any reviews. Any comments?

(This preamp can be found at www.pmillett.addr.com)

Thank you
George

 

[w00t]

www.diyparadise.com has a 'Simple 5687' tube preamp project. The site is down for me now though.

 

[li_gangyi]

I believe that's a line-stage not really a full fledged pre-amp...

 

[arnoldc]

Bottlehead Foreplay.

Built by many, easy to build, cheap, sounds good (to me), and has great support.

Go to bottlehead.com (i'm not affiliated)

I believe that's a line-stage not really a full fledged pre-amp...

hmmm, can you expound on what you mean?

 

[Sch3mat1c]

Preamp:

 

[Sch3mat1c]

Pic (hiding in my desk drawer)

 

[w00t]

Preamp:

Newbie question:
Why are the tubes used for the signal side also found in the PSU side?

 

[fscarpa58]

hi

Why are the tubes used for the signal side also found in the PSU side?

only in reference to their filaments.

Federico

 

[li_gangyi]

Well the DIYAudio link is working now...whu diun u guys go take a look?? Should be the simple 5687 preamp...

 

[w00t]

hi



only in reference to their filaments.

Federico

Oh.. I thought those looked like gas regulator, but missing a dot.