509

About the 509

The EAR 509 is a high-performance monoblock tube amplifier delivering 100 watts per channel into 4, 8, or 16 ohms. Designed by Tim de Paravicini, it has been in continual production for over 30 years and is renowned for its reliability, clarity, and musical transparency. The amplifier features a rectilinear polished chrome chassis, self-biasing with adjustable dials and LED indicators for easy valve maintenance, and bespoke hand-built output and power transformers. It uses industrial-grade components and offers both RCA and balanced XLR inputs for professional applications. The design avoids overall feedback, employing a unique balanced bridge mode output transformer for superior sound quality. It is highly regarded for its clear, transparent sound with firm bass and detailed top end, suitable for both professional studios and high-end home audio systems.