Dynaco PAS 2 value and difference to PAS 3?

Ralph here is my progress and plans.

I have bypassed the tone controls. All the caps have been replaced.(orange drops from the looks of them)
I replaced the funky bad balance volume pot and disconnected the loudness feature.
I added a couple of 47k resistors to the volume pot to help the taper.(much better)
I have a stepped attenuator coming.
I have a power supply upgrade board coming to get rid of the rectifier, but keeping the tube.

I would like to eventually get rid of the blend switch and the tape eq for more inputs, but that is low on the priority list. I only listen to LP,CD,FM and I have enough inputs for those already.

I have my SUT connected but I had to go back to the 15:1 ratio because there was too much gain. No problem.
It sounds so good. I am in tube heaven. Those old Telefunkens are sweet.

I feel like I have never really known what "inner detail' meant. This has inner detail in spades. Not to mention timbre and presence the likes of which I have never known.

I have to mention that I got a lot of help from George Regenesis. He offers Dynaco upgrade boards and was a big help to me so he deserves a shameless plug here. He also has some of the best prices too.

Ralph, would this mate up with the Atmosphere's MA-1?
I really want to hear those amps.Of course I would need some Zero transformers too.
I can't wait to go back to work and making a living.

e

Emorrisiv, the PAS can drive our amps just fine!

There is a way to eliminate one coupling cap in the phono circuit. I usually build a new line stage as well- one that has no feedback. I usually retain the original power transformer (if the mods don't fit in the original chassis then you might as well start from scratch...). We also have a tiny high voltage regulator that does amazing things for the sound.

There are very few preamps that will sound better than a PAS if it is properly modified. Its kinda fun to have a giant-killer in the PAS guise :)

Ralph, that sounds like it could be beyond my beginner abilities unless I had directions.I think that the impedance values are kind of weird, but I can live with it for now.Very sensitive volume pot.

I saw that there is a guy that offers new "Spice" designed boards that incorporate 3 tubes on each board. Interesting!

Regenesis and Dynaco Doctor both offer new boards.
Are these updated circuits/caps or are they just replacements?

e

Emorrisiv, some are replacements, others are updates of one sort or another.

Since I don't like the unit to grow into multiple chassis, I keep the original power transformer and supply. That means that the line stage I have for it has to not draw more power than the original, which is important due to the limitations of the transformer.

If I were you I would start with simple mods and see how things sound. The nice thing about the PAS used to be that they are very simple, inexpensive and there were a lot of them. Nowdays they have gotten more rare, but they are still very easy to modify and I'm pretty sure its the most-upgraded/most-updated preamp ever made.