KSA-50 vs First Watt M2
The M2's power @ 8ω is 25W against the KSA-50's 50W, its power @ 4ω 40W against 100W, and its thd 0.025% against 0.018%. Both share class (A).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$2,400
Around — community and catalog average, updates slowly
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.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 50W @ 8Ω
- Power @ 4Ω
- 100W @ 4Ω
- Amplifier Class
- A
Analog Output
Analog signal output specifications
- THD
- 0.018%
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 482.6 × 228.6 × 482.6 mm (W × H × D)
- Weight
- 27.22 kg (60 lbs)
Key Specifications
Power: 50W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions