The unparalleled flexibility of removable all-tube preamps — 2 at a time.
18 independent hot-swappable plug-in preamps are available. Physically designed after the preamp sections of the world's greatest amps, they generate unparalleled purity of tone in all styles. The Randall RM50HB becomes any combination of classic or modern amps, simply by plugging in your choice of tube preamp modules. Designed for the club professional who is looking for an all-tube amp with multiple tones. The RM50B gives you 50W of power using Ruby 6L6 tubes and 2 modular channels for plugging in Randall preamps. Controls include master volume, master density and presence controls, and front panel mix control. Connections include a tube-buffered parallel effects loop, series effects loop, slave out, rear master input (for volume pedal), and rear bias test points.