Bought from new. Had very little use, only used a couple of times and been kept in box since. Works 100%
14w in gives 500w out, no problem.

Comes with box and instructions.

Fully insured postage



The RM KL 703 500w Linear Amplifier is a high-quality audio device designed for ham and amateur radio enthusiasts. With a sleek black design, this unit offers a power output of 500W and supports single sideband (SSB) modes. Featuring a single input and output, this amplifier from the trusted brand RM is perfect for enhancing communication equipment in mobile phone and radio communication setups. The inclusion of fans in the boxed packaging ensures optimal performance and durability, making it a reliable choice for those looking to upgrade their communication equipment.