design philosophy

Our design philosophy is the culmination of more than 40 years of research and development. conrad-johnson products are executed with simple circuits, constructed with the highest-quality custom components. Our products benefit from the use of proprietary components (CJD film capacitors, audio and power transformers), military-grade parts (precision audio resistors), and in-house designed elements (circuit boards, chassis and dress metal)—all sourced from North American vendors.

All c-j components are designed and built by hand in the USA.

Our products are a manifestation of our passion. Performance cannot merely be measured; it must be heard. It just sounds right.

conrad-johnson HVA-1 headphone amplifier

Conrad-Johnson Announces a Reference Headphone Amplifier

Conrad-Johnson Announces a Reference Headphone Amplifier

conrad-johnson ET6 Preamplifier beauty shot

announcing the

This latest rendition of our enhanced triode circuitry incorporates the power supply circuit upgrade from the GAT Series 2 (and subsequently found in the ET7). The ET6 also features upgraded I/O connectors and beautiful new casework.

conrad-johnson et7s2 preamplifier

announcing the ET7-S2 line-stage preamplifier

The ET7-S2 enhanced triode line-stage preamplifier has been designed to incorporate the advances made with the Series 2 upgrade to our flagship GAT into a more affordable model.

conrad-johnson ART150 amplifier

new ART amplifiers

In celebration of our 40th anniversary, conrad-johnson has introduced two new ART amplifiers: the ART150 stereo amplifier and ART300 mono-block amplifier.

conrad-johnson Classic 120

announcing new classic amplifiers

The conrad-johnson design team is committed to adapting the advances from our state-of-the-art pursuits to more affordable offerings accessible to a wider range of music lovers.

current products


For more than 4 decades, our vacuum tube preamplifiers have set the industry standard for performance, garnering worldwide acclaim and a place in many a reference system.


Since our first amplifier, the MV75 of 1978, c-j vacuum tube and solid state amplifiers have defined the state of the art. Our line features power amplifiers to fit nearly any requirement.

phono preamps

There’s no denying it: vinyl is back. At conrad-johnson, we never ceased our efforts to extract the utmost in detail and musicality from the ultimate audiophile medium.

see all of our current products

Visit CLOFO—Classical Lost and Found: “Forgotten music by great composers and great music by forgotten composers”