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Niles SI-250 Stereo single-source power amplifier

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  • Product Description

    The choice of pros since 1978
    When professional installers need versatile and rugged components they can depend on, they turn to Niles. Niles' Systems Integration Amplifiers® are powerful tools that simplify and optimize complex custom multi-room installations. While traditional receivers and amplifiers work well in typical stereo and home theater systems, multi-room systems require an amplifier that does more than just drive speakers — these systems require an approach that offers greater flexibility and performance.

    Power and performance to spare
    Whether you're using the Niles SI-250 as a part of a multi-room audio system or as the amplifier in your main listening room, you'll find that it delivers plenty of pristine, dynamic stereo power. Its high-current design allows it to handle unusual and reactive loads with ease, including the ability to safely drive up to three pairs of directly connected 8-ohm speakers at the same time. And it's not just all muscle. Niles uses high-quality parts throughout to ensure that you'll always get top-notch audio performance. Independent power supplies for each channel prevent cross-talk interference, ensuring clean, spacious sound. Oversized heat sinks keep the SI-250 cool even when driving heavy loads, eliminating the need for a noisy cooling fan and guaranteeing silent operation. Plus, this amp's beefy toroidal transformer ensures that there's always a quiet, steady stream of current coming.

    Installer-friendly features
    Niles knows what it takes to stay competitive in the world of custom installation. That's why their amps include features that make them easy to integrate. You get three separate turn-on modes to bring the amp to life, plus a 12-volt DC control output to activate other devices such as motorized screens and curtains. Independent level controls for each channel allow precise volume matching to the rest of the system, and can also be used to limit volume to prevent speaker damage. Handy cascade audio outputs let you daisy-chain mutiple amps together. And you can even combine its two channels into one to give your speakers more juice — a great option for power-hungry outdoor speakers.

    Product highlights:

    • 2-channel amplifier
    • bridgeable high-current design handles unusual and reactive loads with ease
    • power output:
    • 50 watts RMS per channel at 8 ohms (both channels driven)
    • 100 watts RMS per channel into 4 ohms (both channels driven)
    • channels are bridgeable to 225 watts RMS (mono) into 8 ohms
    • toroidal transformer
    • frequency response: 5-25,000 Hz (-3 dB)
    • signal-to-noise ratio: 102 dB (20-20,000 Hz)
    • total harmonic distortion: 0.2% (20-20,000 Hz)
    • three turn-on modes: music-sensing, voltage trigger, and manual
    • gold-plated binding posts spaced to accommodate dual banana plugs
    • 12-volt control output
    • voltage trigger input accepts 3-24V AC/DC
    • cascade audio outputs let you easily connect additional amplifiers to your system
    • independent right- and left-channel level controls for precise volume matching
    • fanless design with oversized heat sinks for cool, quiet operation
    • DC, short circuit, and overload protection with automatic reset
    • front-panel LEDs indicate Power, Active Status, and Protection Warning for easier troubleshooting
    • detachable AC power cord
    • rack mount ears included
    • weight: 10.8 lbs.
    • 17-1/4"W x 2-1/4"H (including feet) x 13-1/2"D
    • warranty: 2 years
    • Our 60-day money-back guarantee
    • MFR # FG01701

    What's in the box:

    • Niles SI-250 owner's manual
    • Stereo system integration amplifier
    • 6' AC power cord (3-prong IEC plug)
    • 2 Rack-mount ears
    • Installation Guide
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