KSA-50

About the KSA-50

The Krell KSA-50 is a stereo power amplifier introduced in 1983, known for its robust class-A solid-state design. It delivers 50 watts per channel into 8 ohms, with the ability to double power output as speaker load impedance halves down to 1 ohm, providing 100 watts into 4 ohms and 200 watts into 2 ohms. The amplifier features a frequency response of 20 Hz to 20 kHz and can drive speaker loads as low as 2 ohms. It weighs approximately 60 lbs and measures 19 x 9 x 19 inches. The KSA-50 is praised for its neutral, uncolored sound, very low noise floor, and excellent resolution of low-level musical details, making it comparable in some respects to tube amplifiers in terms of musicality. It is a highly dependable high-end amplifier favored by audiophiles for its clarity and power delivery.