ROS-2000 PCB

A tone-faithful replacement and upgrade for JCM2000 PCB boards

The ROS-2000 replacement PCB board preserves the legendary tone of your JCM2000 while adding several key enhancements. The result is a long-lasting, hard-rocking, tone-true solution for your JCM2000 amp with reduced noise and improved reliability. Using advanced electronics modeling unavailable at the time of the JCM2000’s original design, we have built this replacement board to eliminate issues faced today by ageing JCM2000 PCB boards.

The ROS-2000 is quieter, longer lasting, and more resilient, but still loaded with all the tone mojo you love about your JCM2000 amplifier.

A true UK product, the ROS-2000 was designed in the Robin Hood county of Nottingham, is manufactured near the site of the Battle of Hastings, and is supplied from Yorkshire near the picturesque coastal town of Robin Hood’s Bay, a former smuggler’s paradise of the 18th century.

Upgraded Features

• Optimized PCB Track Placement: Eliminates all paths shared by high-voltage and bias circuits to prevent interference, and uses heavy-duty tracking on the board
• PCB Slots: Added to prevent cross-conduction at the valve sockets.
• Upgraded DC Heater Diodes: Equipped with 3A rated diodes for enhanced durability
• Discrete Diodes: Replaces the monolithic bridge rectifier to improve airflow around components and enhance future serviceability
• Flyback Diodes: A modern failsafe that protects the output transformer when speakers aren’t attached
• Larger Heater Circuit Copper Areas: For improved heat dissipation resulting in better noise control and component life
• High-Quality FR4 Board: Ensures longevity and reliability
• Low Impedance Ground Plane: Reduces noise for a clearer sound
• Enhanced AC Heater Connection Paths: Improves performance and eliminates crosstalk
• Upgraded Anode Resistors: From 1/2W to 2W for greater reliability
• Improved Film Capacitors: Rated to 630V for improved durability
• 105C Temperature Rated Electrolytic Capacitors: For improved service life

Significant Benefits

• Resolved Preamp Hum: Upgraded 3A diodes in the DC heater reduce heat build-up and eliminate hum caused by PCB conduction
• Noise Reduction: Achieved through a low impedance ground plane and improved AC heater connections
• Enhanced Component Life: Built to last with upgraded anode resistors, top-of-the-line capacitors, and a high-quality FR4 board

Easy Installation

• Identical connector numbers and placements ensure seamless integration
• Consistent fixing points for easy setup and minimal hassle
• No soldering required to install the board

Pre-Order Now

We are now accepting pre-orders for the boards. We will begin shipping in late March.

There are three versions of the ROS-2000: DSL50, DSL 100, and TSL100/122. The ROS-2000 version must match the JCM2000 amp model you’re installing it into.

UK

UK customers will see prices including VAT.

USA

We pay tariffs and customs clearance charges on behalf of US customers. This means no hassle with customs, no price tag surprises, and faster delivery. Our website shows the US price including US import fees.

Everywhere else

All other countries will see prices excluding VAT and must pay locally applicable taxes on delivery.