Kora CSA 1150 Class A Mono Amplifier

The Kora CSA 1150 is a compact yet powerful mono amplifier built for pure Class A amplification. Featuring Kora’s proprietary SquareTube® technology paired with a heavily filtered linear power supply, it delivers effortless dynamics and exceptional musicality. Designed to operate entirely within its comfort zone, the CSA 1150 ensures smooth, distortion-free sound reproduction with remarkable stability. Intelligent ON/OFF signal detection and adaptive current management make it both efficient and convenient, while its robust French craftsmanship ensures long-term reliability.

Key Features

• Pure Class A Mono Power – 1 x 150 W / 8 Ω for uncompromising performance.
• SquareTube® Technology – Extracts natural dynamics, detail, and tonal accuracy.
• Heavy-Duty Filtering – 400,000 µF ensures stability and headroom.
• Smart ON/OFF Management – Powers up with input signal, shuts down when idle.
• Adaptive Current Control – Adjusts to speaker demands for efficiency.
• Premium French Design – Aluminium and steel construction, mineral grey finish.

Square Tube Technology

The CSA1150 refines Kora’s Square Tube Technology into a design that thrives on balance and clarity. Its hybrid stage lets the tubes breathe warmth and dimensionality into the signal, while the transistor section ensures speed, grip, and low distortion. Together they create a sound that is open, unforced, and deeply engaging, ideal for extended listening without fatigue. Learn more about Square Tube Technology.

The Listening Room Difference

We’re a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on trust, not hype. Whether you’re visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction. We don’t just ship boxes. We help build systems, answer your questions like real humans, and make sure every detail of your setup is right, from the cables to the final connection. Our passion is helping you get the most out of your gear, with support that lasts well beyond the sale.

Specifications