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Old 9th May 2022, 12:14 am   #1
nzoomed
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Join Date: Feb 2016
Location: Tauranga, New Zealand
Posts: 132
Default Thoughts on this HiFi line amplifier?

Looking at building this circuit here. Looks fairly simple and has a bypassable tone stack.
http://www.dogstar.dantimax.dk/tubes...s/toneampm.gif

More info on the whole unit it comes from:
http://www.dogstar.dantimax.dk/tubestuf/tonecont.htm

I will probably be using my own RIAA phono stage instead of his which uses E88CC/6922/6DJ8 tubes.

I was looking at adding a balance control to this which I would insert at the end, any recommendations on where the best placement would be would be helpful.

Also a bit stuck around VR103 in the schematic, this looks like he is using 3 specific neon lamps that were designed to work as a cold cathode voltage regulator, from what ive been reading they run around 75V or so.

Would this mean that its regulating 225V at the anode of this?
Im wondering if there is any voltage regulator in the OA family or similar series that could be suitable?

I dont need any of the FX loop or tape monitors, etc, so I will remove that to simplify things.
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