Pricklely Peete
Franken modder
- Joined
- Feb 17, 2008
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Don't forget that to run the 6H30P-i gold pins, DR's or the Sovtek's, the grid resistors (1 for each power tube) have to be changed from 63 ohm to 120 or 121 ohm 1 watt or better rating (I used 121 ohm Kiwame 2 watt).
This isn't an option for the 6H30P-I tubes, it's a requirement.
The stock family of 6N6P and 6N6P-I power tubes are the only types that can be used unless you take apart the MK III and swap out those resistors.
That task is not easy due to the tight confines of the chassis.
The best version of 6N6P-I are those from the Novosibirsk plant made in the early 70's. I believe Yen Audio has matched pairs of this type although I'm not sure what plant his are from. They are NOS tubes no doubt as they went out of production decades ago.
Peete.
This isn't an option for the 6H30P-I tubes, it's a requirement.
The stock family of 6N6P and 6N6P-I power tubes are the only types that can be used unless you take apart the MK III and swap out those resistors.
That task is not easy due to the tight confines of the chassis.
The best version of 6N6P-I are those from the Novosibirsk plant made in the early 70's. I believe Yen Audio has matched pairs of this type although I'm not sure what plant his are from. They are NOS tubes no doubt as they went out of production decades ago.
Peete.