JRC4558DD/2155 Glossy 4-piece Set! Tested and Working!! Product Description Thank you for viewing. This is a listing for a JRC4558DD/2155 glossy 4-piece set! Tested and working!! Early 1980s Glossy 4558DD 2155 All ICs are used, but they have been tested for operation using an IC check device (headphone amplifier). I have removed as much solder as possible, but some may remain. How about for the production, modification, or research of distortion or overdrive pedals? This is a JRC 4558DD with the rarely seen lot number 2000s. Shipping will be via Click Post, wrapped in aluminum foil and protected with air cushioning. Thank you.