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I'm a Japanese guitar amp engineer.

1959 2ch specification modified Marshall JMP 100W.

At the time of listing, we have replaced the power tube with a new Electroharmonics EL34 and adjusted the bias.

Outputs the best sound.

This amp has been modified by a very advanced builder (I don't know who) and converted to 2ch specifications.

Improved wiring to minimize noise levels.

The original four inputs have been changed to clean volume and drive volume, input jack, and footswitch jack. Equipped with an LED next to the volume pot, making it easy to see when switching channels.

There is some switching noise when switching channels, but the sound is clean and has a sense of drive, making it feel like a practical amp.

Normally, I would put a modified amp back together and sell it, but it was such a great modification that I decided to keep it.

There are some crack repair marks on the outer box, but this does not pose a practical problem. Please check the image for the condition.

Accessories include a foot switch and a 3m cable for the foot switch.

It has been modified into a very practical 2ch amplifier, and I think it will become a serious companion.

There was no noticeable gully, so I purposely left it in a vintage pot. This is because you won't get the deep sound of a vintage one if it's new.

Please consider it.

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