Take a picture of the underside and send it to me.

I will send you a PM

Output impedance about 60 ohms. Tube rectification ether mercury vapor rectifiers 866 or 3DG4,5AU4 or 5CU4 rectifiers. The mercury vapor rectifiers have a constant voltage drop 15 volts regardless of the power draw. And their blue glow looks cool and can handle 1 amp. Sound should be similar to...

The 5CU4 is a great tube low voltage drop high current. Most amps can't use it but yours can. A bit hard to find though. Glenn

Glad to talk to you guys again. Have to build some amps to stop me from going crazy. In hospital for months takes a toll. Being bed ridden and watching TV can't do it anymore. Don't work anymore so just sit Infront of the TV losing my mind. Do listen to music too but have to do something. Only...

5CU4 is a great rectifier tube for the OTL but draws over 3amps filament current might overheat the transformer in other amps.

I will get that amp back to you. My problem now is I am to feeble to pick the amp up in the box. I will make no more amps with 3 transformers and a couple of chokes just to heavy now. Glenn

Hi Have you taken the bottom off? Might have a bad plate resistors on the 6SN7. At a point I thought that boutique parts would be better. RONG many unreliable. I used Amtrans AMRG resistors on the plate load of the 6SN7 many have gone bad drifting when they worm up. Replace them with a 22K ohm...

Hi All I am back somewhat feeble now but plan on working on amps again in a limited amount. Designing a OTL amp that will drive the Caldera planar headphone properly as well as other high impedance phones. Going to use 7236 or 6336 output tubes with 6J5/L63 drivers better sounding than any...

Hi Everybody Happy Thanksgiving Been gone for awhile due to health issues Have a great weekend

Armacost Lighting Quick Connect Terminal Block (3-Pack)-920030 - The Home Depot

It only hurts for a second ! Try some of these cut one off then cut the wire stick one wire in one side one in the other ant tighten the set screws. Easy peasy I use these at work all the time.

That should work no connection to the screen grid. Just remember that it has CCS set for the EL3N with LED bias on the cathode. Try it can't heart try it see how it sounds.

Did you buy that short piece? I usually have to buy it in 100ft roles don't matter I use it all.

Craziness.