Lowell’s Model TLM-600 universal input impedance-matching transformer converts balanced and unbalanced low-Z, telephone-type lines to Hi-Z amplifier signals, Hi-Z to low-Z, and attenuates or "steps down" 70V or 25V speaker lines to a line level signal suitable for remote amplifier input. Versatile accessory also includes a phono jack and level control for field connection, if desired. Chassis includes barrier strip terminals and mounting holes for fast connection and convenient mounting to a wall or onto a rack panel such as Lowell Model L15-310E (order separately) with prepunched mounting holes for electronic accessories.