RMS is a budget-oriented brand of guitar and bass amplifiers aimed largely at beginner and practice-level players. The brand, sometimes listed under the manufacturer name RMS Communications, is best known for small combo amps such as the RMSG20 and RMSG20R 20-watt guitar combos and the RMSB20 20-watt bass combo, along with simpler practice models like the RMS-200 8-watt amp.

RMS amplifiers are typically sold through third-party retailers and online marketplaces including Reverb, Guitar Center, Walmart, and eBay, rather than through a prominent flagship website. The line generally emphasizes low-cost, no-frills designs with basic tone controls, headphone outputs, and small-wattage speakers intended for home practice rather than gigging.

RMS has 9 products cataloged on Equipboard, including Combo Guitar Amplifiers, Bass Combo Amplifiers, and Keyboard Amplifiers.