Krell KSA-100S

100 wpc Stereo Power Amplifier

In good condition. Original box and packing is not inlcuded.

The KSA-100S, built with legendary Krell attention to construction quality and able to drive difficult loads, is undoubtedly a highly competent amplifier. Its sonic personality is slightly on the soft, forgiving side, which usefully minimized the hardness of many digital recordings. The secret to Krell's KSA-100S is a technology they've developed called Sustained Plateau Biasing. Essentially, it allows the amplifier to act like a Class-A amplifier but without the inefficiencies of a true Class-A amplifier. The result is a highly listenable, detailed, and nearly magical amplifier for the price. This one has been carefully checked out by our tech and is ready for its new owner. Beware: this amplifier weighs nearly 100 lbs. 

Description: Power output: 100W into 8 ohms (20dBW), doubles with each halving of load impedance down to 1 ohm. Frequency response: 20Hz–20kHz, +0.0/– .1dB; 1Hz–150kHz, +0.0/–3dB. Distortion: <0.1% at 1kHz; <0.5%, 20kHz, full power. Slew rate: 100V/µs. Input sensitivity: 1.4V RMS. Gain: 26dB. Damping factor: >60. Input impedance: 47k ohms. Power consumption: 100W, idle; 1400W, full power.

"The KSA-100S, built with legendary Krell attention to construction quality and able to drive difficult loads, is undoubtedly a highly competent amplifier. Its sonic personality is slightly on the soft, forgiving side, which usefully minimized the hardness of many digital recordings." - Stereophile

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