solid state vs tubes

Magfan the hp4062ux is a parametric tester used with probers to test wafers when they come out of the fab.

as i have stated before, my favorite amp is the conrad johnson mv 125. i am convinced that there does not exists a solid state amp that comes close to the cj.

i don't own the cj. i own a pair of vtl deluxe 120s.

based upon the comments so far , i am confident that i will not find a solid state amp which sounds like the vtls. that is , i would expect that in a blind test, i think i could identify the difference between my vtls and any ss amp.

thus, all i can do is listen to some more ss amps until i throw my hands in the air and give up.

i suspect i should look for class a amps for likely candidates.

incidentally, i once owned a pass aleph 0 and was using it with a pair of quad 63s.

i did not like the treble response and sold the amp.

From what I have read about the line, my impression is that CJ gear is not a line that can be emulated practically by SS in that it has a distinctive signature and less neutral tube sound. My impression of VTl is similar but perhaps not to the same extent.

Mapman, you might find this interesting:
http://www.stereophile.com/features/the_carver_challenge/index.html

The devices made by IR are 100% not symmetrical MOSFETs. The gate and source are on the top of the device, while the drain is the bottom of the wafer, which, while I can't discuss fabrication details, has an ohmic contact with the package.

So, gate/source is very low cap while the drain is many microns away, so should have much higher capacitance.

No effort at all for a groove-type symmetry. This is strictly a planar device.

Rleff (nice, diffusion oriented name).....I'm not knowledgable about probe enough to know who makes what. The last HP stuff I saw in a test area were the frequency meters used to tune quartz crystal oscillators. This was no later than about '80.