Description
The Dr.Tube JCM2000 DSL Stable Bias Kit solves the problem of the drifting bias in the Marshall JCM2000 DSL50 and DSL100 amps. This kit is not suited for the DSL201, DSL401 or the non-JCM2000 DSL amps! See the Dr.Tube JCM2000 Stable Bias Mod page for detailed information on this matter.
This kit is supplied completely assembled with high quality Wima MKP10 capacitors, Rubycon ZLJ, low ESR, 105C, electrolytic caps and 1% metal film resistors and the installation instructions, which can also be downloaded here.
Don’t forget to order the handy hollow drill.
Ian (verified owner) –
Needed to leave my review on this as I couldn’t be happier with how this turned out. I recently got my JCM2000 DSL and loved it from the get go. Couldn’t believe how good the clean tone was. But…… the bias was out of control. Once I found out about this the amp was switched off and left so that it wouldn’t get damaged any further.
From there I started researching the issue and came across the Dr. Tube Stable Bias mod.
Dr. Tube was really helpful with ordering and then once I received the kit I reached out for some clarity on the differences between mine (the 50 watt) and the 100 watt DSLs. They responded within hours and I was on my way.
Installed the mod, fired her up and lo and behold I have a stable bias and can set it just how I like it for the amazing tone this amp can produce. I would highly recommend this kit to anyone with a DSL/TSL even if you need to get a tech to install it (tube amps are not to be messed with with no experience), and I highly recommend Dr. Tube themselves for their great customer service. Also, the hollow drill bit is a must have for this fix!