Regarding the Ming Da MC-2A3.
Am already using RCA2A3 for rectifiers, GE british EL34 for regulators,
and swapping from among my RCA smoke glass, CBS, stubby Sylvania chrome tops, and KenRads.
Each combo yields a different flavor (color) and I am having a hard time deciding which one's best. The only thing I can say is that any of the
above NOS is better than the stock EH.
Also swapped out the "Philips" lytic cap next to the 6SN7s for Black gate 350V 150uF, and the "BC" lytic in the regulation circuit for Mundorf Lytic.
I am hoping it will make the bass tighter (cant expect too much afterall this is a pure zero feedback design).
Coupling caps/output caps are swapped to Jensen 0.22uF and Mundorf silver oil 2.2uF.
Things are settling in (the initial brightness of the Jensens are starting to fade) so I cant really give a verdict yet.
Am already using RCA2A3 for rectifiers, GE british EL34 for regulators,
and swapping from among my RCA smoke glass, CBS, stubby Sylvania chrome tops, and KenRads.
Each combo yields a different flavor (color) and I am having a hard time deciding which one's best. The only thing I can say is that any of the
above NOS is better than the stock EH.
Also swapped out the "Philips" lytic cap next to the 6SN7s for Black gate 350V 150uF, and the "BC" lytic in the regulation circuit for Mundorf Lytic.
I am hoping it will make the bass tighter (cant expect too much afterall this is a pure zero feedback design).
Coupling caps/output caps are swapped to Jensen 0.22uF and Mundorf silver oil 2.2uF.
Things are settling in (the initial brightness of the Jensens are starting to fade) so I cant really give a verdict yet.