RE: MP3 phono cascode mod

OTL Asylum

OTL, Output Transformerless Amplifier User Group.

In Reply to: MP3 phono cascode mod posted by MP on December 14, 2022 at 03:52:37:

After re-read the old threads, I did the "Cascode de-activation mod) - removed the middle two 12AT7 and placed 9-pin adaptors with jumper wires soldered in.

The phono stage is much quieter, no tube rush with volume setting up to 4 O'clock.

Sound is more transparent with bigger stage. Playing at volume level is at 12-1 O'clock. Much happier.

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Follow Ups Full Thread

Topic - MP3 phono cascode mod - MP 03:52:37 12/14/22 (10)

Does factory have jumper/adapter for purchase? Yes. nt - Ralph 12:43:45 12/16/22 (8)

RE: Thank you, Ralph. New setup with SUT - MP 07:54:33 12/20/22 (7)

Variables - Ralph 09:38:34 12/20/22 (6)

RE: Variables - MP 10:16:35 12/20/22 (5)

RE: Variables - Ralph 10:19:08 12/20/22 (4)

RE: Variables - MP 11:14:00 12/20/22 (3)

RE: Variables - Ralph 11:26:45 12/20/22 (2)

RE: Variables - MP 04:30:19 05/05/23 (0)

RE: Ralph, thank you. Very informative. NT - MP 13:33:11 12/20/22 (0)

RE: MP3 phono cascode mod - MP 08:02:01 12/16/22 (0)

Follow Ups

RE: MP3 phono cascode mod - MP 08:02:01 12/16/22 (0)

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