Kora CSA 1150 Class A Mono Amplifier
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At this level, every detail matters: your room, your system, what you’re driving it with, what you’re listening to. I handle these orders personally because an investment like this deserves more than an Add to Cart button. We’ll work through system synergy, I’ll make sure the setup is right, and we’ll coordinate delivery so it arrives exactly how it should. A few of our brands require this direct approach, but at this price point, it’s how I’d do it anyway. Use the button above, or call/text me directly at 410-239-2020.
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Family-Owned Authorized Dealer
We're an authorized dealer for every brand listed on this site, so your warranty is valid and fully supported. We're a real brick-and-mortar shop in Chestertown, MD with shelves of actual inventory, not a drop-shipper. Family-owned and run for three generations, since 1978.
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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
| Specification | Detail |
|---|---|
| Dimensions | 420 x 440 x 260 mm |
| Weight | 32 kg |
| Materials | Aluminium and steel |
| Finish | Mineral grey |
| Accessories | Power cord, instructions |
| Output Power | 1 x 150 W / 8 Ω (pure Class A) |
| Filtering | 400,000 µF |
| Inputs | 1 RCA, 1 XLR |
| Power Management | Automatic ON/OFF (signal detection) |
| Current Management | High/low current switching |
Where does the CSA 1150 sit in Kora's class A range?
Where does the CSA 1150 sit in Kora's class A range?
It is the small mono model. A single channel delivers 150 watts in pure class A into an 8-ohm speaker, and Kora says it moves into class AB on 4 and 6-ohm loads. You need one per speaker, and each weighs 32kg. Get in touch with Mike to talk through your speakers.
CSA 1150 or CSA 1200?
CSA 1150 or CSA 1200?
The CSA 1200 is the large mono: 200 watts, 560,000 microfarads, 660mm deep and 45kg. The CSA 1150 is the small one: 150 watts, 400,000 microfarads, 440mm deep and 32kg.
How do I set the CSA 1150's gain?
How do I set the CSA 1150's gain?
The gain control sets input sensitivity, for example so that 1 volt from your preamplifier gives full power. It is a potentiometer, so Kora says there is no loss of quality in reducing it; in mono use, set it to suit your preamplifier and match the two amplifiers.
Does the CSA 1150 have a remote?
Does the CSA 1150 have a remote?
No; Kora supplies a power cord and manual. With the power switch on Auto, which Kora recommends, it switches itself on when a signal arrives and back to standby after a minute without one, so it can sit near the speakers.
