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Speaking of bonehead, this guy watched the video of initial power up of the wopl just after I attached the transformer. He said I was a brave soul for doing it without a variac or dbt. He didnt know you tested the amp before sending it to me.

Half biass? :evil4:

How many of you in areas with snow use a heater on your car so it can be started in the morning? This is unheard of in Australia.

Here in Australia we are peaking at $7 aud per gallon for regular. That's about $5 usd per gallon. Crazy!

I went back to running the tubebox ds off the standard switch mode psu due to space constraints, it still sings nicely and sounds more full than the rat shack battery pres. That being said, considering what the battery pres are, they do very well, but of course this will improve with mods...

Meanwhile the Project Tubebox DS phono pre sits there snickering :evil4:

Hooked up the two pres, both loaded with a duracell ultra battery. Two audio grade 32k resistor plugs on unused inputs (its all I had handy). Earth wire running from Turntable then another wire to share the earth to the 2nd pre. Put some Dire Straits on, Japanese pressing, not bad. Its going to...

3D, that is excellent, my cigarette went out multiple times during reading :evil4:. Your contribution is much appreciated. I am working 12 hour shifts, so not much time to do anything. On a positive note the other 3 phono pres arrived. The best I can do for now with the 30 minutes I have before...

When the WOPL was having issues, there were some moments where I got 'angry', but certainly not silly angry like when I was young. I realize this happened for a reason, to make me learn. Lee and Joe spent hours guiding me through the troubleshooting, and I am glad I took the time to nut it out...

There is some great info there, very interesting read (yes my dinner went cold), really appreciate the contributions too! Still waiting for the other 3 battery pre's to show up, great idea about using 2 in stock form. What will be more interesting is applying the mods and listening. 3D you are...

thank you :)

That would be handy, after about 15 hours of solid use on a stock unit. the battery went from 9.5v to 9.2v. Im curious as to what the battery life is on a standard duracell alkaline battery.

Emitter resistors arrived also, KOA Speer, sounds tough.

Spare outputs arrived Do I test the 95’s with the same 6 tests like the 96’s?

Could that be achieved using 2x 9volt batteries?

With my limited knowledge, I don't fully understand what he has done with all the component changes, but there has to be a reason for them.

I see some wima caps in there, maybe also upgrade the electrolytics to nichicon muse.

No model number at all on mine, top or bottom.

Thank you Sir, what are the quality of the capacitors like?

Found a schematic for the Rat Shack Pre