I asked Trolldragon at this forum and he Said. "The 6J1 that the MT-602 uses is a pentode and the 6HM5 is a triode, if they are using the screen grid on that 6J1 then no you could not use a 6HM5 or any other triode in it's place."

Hmm maybe that person dont know. So he says No instead? Must be a reason.

Wait.. you cannot use Yugo 6HM5 in mt-602? 😥

Exactly what company did you buy those Cheap genuine Lorenz from????

Unrelated. But have you tried hardware EQ your sound going into your dotty? I bought this one and now everything is perfect 🥰🥰🥰 Leicozic Dual 31 Bands Equaliser Digital Equalizador De Audio Equalizers A3 Profesional Sound System Stage & Karaoke Equipment https://a.aliexpress.com/_mql6Gyt

You worry to much. 😉

I use Sylvania 6SN7 Also with pair of Siemens c3g and pair of lorenz c3g. Buy those and you Will be happy! Trust me 🤤

Thank you soo much ! 👍😃

And what adapter/s is it enough to buy 2 of these 6SN7-6SL7-TO-12AU7? Cut pin 4-5 and solder Them to an external heater? It Will fit in My mk2 ?

Aha! Can i use this device ??? https://www.ebay.com/itm/XL4015-5A-DC-Buck-Voltage-Power-Converter-w-Voltmeter-CNC-Digital-Controls-/132816365155?_trksid=p2349624.m46890.l49292 And to what pins do i solder ? 4 and 5 ? 😊

Hello I am new to tube Rolling 😊 can i use 6AS7G's power tubes in My Ld mk2? Or is it only for mk3? (With that strange cut pin thing) 🤔??