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Guilty as charged, got my 700B from eBay, repaired a few issues (thanks to Lee), had it running in my living room, was putting the covers over the transistors, accidentally shorted an output with a cover. 4 months later it was a full WOPL.

Mark is right, you will have a world class reliable amp, if you are keeping it then may be worth doing. However you must consider the cost, the cost to upgrade a 400 and a 700 is about the same. Most will buy a 700 to upgrade. I have a full WhiteOak 700B and a nearly stock 8 fin 400 with DC...

Oh and knobs, heat sinks, p-straps....

Isn’t that the one with a switch that will change the rail voltage?

If perfectly working, I would just put a DC protection board in it, 400s are not worth upgrading, unless it is of sentimental value.

And meters will remain...

Nice work, keep posting pics

Driving instructor in the North East, Limerock? If yes fun track, used to drive there in the 90s with the Alfa Romeo club. Welcome to the group!

It would take at least $2,500 to part with mine. I know it most likely wouldn’t fetch that much, lucky I have no plans of selling.

Great job, I am close to buying this kit. Don’t need another amp, it would be in place of my WOPL 700B, well in rotation anyway. No room for two big systems in the house.

My point was probably one or two 700Bs for the high and four for the lows. No need for a one to one match.

Wow, take a look at the thread regarding Pink Floyd’s use of Phase Linear amps, they used more amps for the low end than the less demanding high side of the speakers.

Then I am fresh out of ideas.

Try the scope, maybe something with the caps filtering, full wave rectifiers unfiltered??

Just a guess, are you measuring with a DVM or a scope on DC?, maybe the DVM is getting confused with unfiltered DC.

Great price for a clean 400, SII or One.

Ok, been a while, I did build one four years ago..

Oh and they are not 1s they are model I as in the letter.

They are out there for sale, had a second set close to me go up for sale, somewhere around $500 in fair shape. Don’t need a second set, so I passed. Keep looking, they are amazing, placement not critical, not very directional, as not so much of a sweet spot. Enjoy them as you walk around the...

Yup