RDL FP-MX4 4 Microphone w/Line Level Mixer and 24v Phantom Power

RDL FP-MX4 4 Mic or Line Level Mixer 24v Phantom Power

RDL RU-MX4 Professional 4-Channel Audio Mixer

Radio Design Labs FP-MX4 Mic/Line Mixer

RDL Radio Design Labs ST-MLX3 Stick-On Mic & Line Audio Mixer Microphone 3-Input

RDL RU-MX4 Professional Audio Mixer - NO Power Supply - Not Tested

RDL RU-MX4 Professional 4-Channel Audio Mixer Power Tested

Fostex MN-50 Mixer/Compressor Audio Equipment Retro Collectible 1980s Powers On