The ROS -2000 board is our upgraded, UK-made PCB for the valve board in Marshall JCM2000 DSL 50, DSL 100, and TSL 100/122 amps.
We ship these worldwide, and the board comes with full instructions. A picture is worth a thousand words, so here is a 14-minute video explaining the key features of our design.
Rowan Diskin, board designer of Keld Ampworks walks through the details and the reasons for how the design was implemented.
Check out this deep dive on the design.
Click here to read and article on fitting the board. Rowan, the designer, fitted the board
It is also worth mentioning that one of the connectors is mounted in reverse compared to the original Marshall board. This is deliberate.
Some folks wonder why there are no fuse holders on our board. The fuses blew so infrequently that we replaced them with fusible resistors. Denoted as FP, FP2, FP3, and FP4.
So there is still protection on the board in the very unlikely of a catastrophic failure.
Want to learn more or view the product? Click here.
Please email us with any questions at info@valvetubeguitaramps.com.
You did a great job on this board mine is in and working!
Thanks
Bret