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No problem. It is hard to write clearly sometimes when your brain is working faster than your hands... Let me clarify my definition of "modern" driver board - Something along the lines of Doug Self or Randy Slone. I really admire these guys for putting together a lot of good information on amp...

As you can tell, I work in corporate America... being politically correct is essential for inter-office relationships. $50 is not out of line, but more than I wanted to pay. I appreciate your effort though. Maybe we'll have something to trade down the line.

"That's what this place is all about, a dissemination of information." I concur. Just wanted everybody to know that I was not looking to stir up the hornets nest, but to add any knowledge I may find out along the way. Different amp topologies have different sonic signatures... AKA - transfer...

Ok, let me clarify my stance... I have no intention of trying to "out do" or "better" what Lee and Gepetto have done. I commend them. I am perfectly capable of designing and laying out PCB's. I do it strickly for my own pleasure. I like the PL amp design... I have about 15 PL amps bought...

Yes, but still good. They have never been used, but appear to be OK and have been "reformed". In my 700II or 700B, both amps easily make rated power as designed when using these caps.

I'm doing a few upgrades of my own... I'll start by using these Mallory caps to upgrade the PS section. I also want to redesign the entire driver PCB with a design that is a bit more modern. I'll keep the triple output stage though. Since this is a hobby, no telling when I'll get the first PCB...

Laatsch55 / Gepetto, Since I am new here, I was wondering how much testing has been done on the WOA PCB. Have you done an FFT on it? If not, I could run it on my AP with digital option and post the graphs for additional archive information. I'd be glad to do it. Obviously, I would need to...

Thx Lee. Since it is now after the holidays, I'll be saving my pennies for year end payouts...

Thanks for the pix of the meters Lee. My meter has the two small screws at the bottom of the calibrated VU overlay. I am confused by the price... please clarify.

Listening to the 555 (original, not a 555II) and it sounds pretty good. Does anybody else around here have one? If so, how do you think it compares to PL for sound quality?

Here is the meter I need. If anybody has one that has good movement I'd like to buy it.

I am fortunate to have an AP at home. I got spoiled by the ones at work. On one of my moonlighting episodes, I was able to buy a good used one from the proceeds of that project. I know there are a bunch of PC based audio measurement options out there now, but back in the late 80's, the AP was...

I have a pair of mono-block 211 amps I built about 12 years ago (original design by me). Class A, single-ended, no global negative feedback. Super old school with xenon rectifier power supply (recently took out the 866A rectifiers) and custom wound output transformers. 14 Watts each of smooth...

Anybody here dabble in the big tube amps? 211 or 845?

No. The System One is an earlier model and somewhat similar to the 2700 System.

I was hired after the Jensen acquisition. There was not much left when I started, but I was on the look out for anything that might have had some history attached to it. I have been doing car audio for 30 years... don't tell anybody though. My love is home audio, ironically. Although that...

Yes. Dual Domain System One... my baby.

Thx, I'll let you know Friday. I've had a 400 missing a meter for about 2 years now... poor thing is an eye sore.