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Tube Setup Guide
MP-401 MK3 supports EL34, 6L6GC, KT88, 6550 and KT120 power tubes, 6SN7,
6N8P preamp tubes, and 6N7, 6N7P driver tubes. Since MP-401 MK3 is auto
biasing design, users can change these tubes without any adjustment. Matched
pairs of tubes are recommended. All power tubes are placed at the back row.
6SN7 preamp tubes are placed at the center front row. 6N7 driver tubes are
placed at the outer front row. These need to be double checked and confirmed
before turning on.

Mentions nothing about 6SJ7 tubes. you are using them currently?

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Follow Ups Full Thread

Topic - Crossover Tubes - john635@earthlink.net 04:09:30 10/19/24 (13)

RE: Crossover Tubes - FlaCharlie 11:46:03 10/19/24 (3)

Good morning Flacharlie! - john635@earthlink.net 06:30:38 10/20/24 (2)

RE: Good morning Flacharlie! - FlaCharlie 09:31:37 10/21/24 (1)

RE: Good morning Flacharlie! - john635@earthlink.net 02:00:07 10/22/24 (0)

RE: Crossover Tubes - Triode_Kingdom 11:30:43 10/19/24 (0)

RE: Crossover Tubes - Palustris 10:20:17 10/19/24 (0)

The 6SJ7 is a single sharp cuttoff pentode tube, not compatable with 6SN7 - Chip647 09:17:09 10/19/24 (6)

RE: The 6SJ7 is a single sharp cuttoff pentode tube, not compatable with 6SN7 - john635@earthlink.net 10:05:37 10/19/24 (5)

website - Chip647 15:20:50 10/19/24 (4)

RE: website - john635@earthlink.net 04:13:24 10/20/24 (2)

RE: website - Paul Joppa 07:20:55 10/20/24 (1)

RE: website - PakProtector 09:50:13 10/22/24 (0)

RE: website - Paul Joppa 23:27:17 10/19/24 (0)

Follow Ups

website - Chip647 15:20:50 10/19/24 (4)

RE: website - john635@earthlink.net 04:13:24 10/20/24 (2)

RE: website - Paul Joppa 07:20:55 10/20/24 (1)

RE: website - PakProtector 09:50:13 10/22/24 (0)

RE: website - Paul Joppa 23:27:17 10/19/24 (0)

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