1160 vs Krell KSA-i400
The KSA-i400's power @ 8ω is 400W against the 1160's 300W, its power @ 4ω 800W against 600W, its signal-to-noise 117 dB against 127 dB, and its weight 73 kg (161 lbs) against 61.2 kg (135 lbs).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$38,000
Around — community and catalog average, updates slowly
About the 1160
The Boulder 1160 Stereo Power Amplifier offers 300 watts of continuous power per channel into 8 ohms, with peak power outputs of 600 watts into 4 ohms and 1200 watts into 2 ohms. It features a fully balanced differential circuit design from input to output, utilizing 56 bipolar output transistors and dual toroidal power transformers for robust power delivery and reliability. The amplifier operates in Class A mode up to 17 watts and Class AB beyond, with circuitry to eliminate crossover distortion. It includes advanced thermal management, a proprietary 983 gain stage for low distortion and noise, and an Ethernet-enabled supervisory system for monitoring and IP/HTML control. The machined front panel uniquely depicts the topography of Flagstaff Mountain near Boulder, Colorado. The chassis is precision-machined from aerospace-grade aluminum with a bead-blasted and anodized finish. The 1160 is designed to drive any loudspeaker to realistic levels with exceptional clarity, low distortion, and high dynamic range.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 300W @ 8Ω
- Power @ 4Ω
- 600W @ 4Ω
- Minimum Impedance
- 2Ω
- Input Impedance
- 100Ω
Analog Output
Analog signal output specifications
- THD
- 0.001%
- SNR
- 127 dB
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 457 × 236 × 565 mm (W × H × D)
- Weight
- 61.2 kg (135 lbs)
Key Specifications
Power: 300W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions