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QSC ISA-450 Power Amplifier (B-GRADE)

The QSC ISA-450 is a 3U rackmount power amplifier is a rugged, cost-effective power solution for cinema and permanently installed sound systems.

Key Features:

  • High output stereo power amplifier low-impedance contractor installation applications
  • Rear panel gain controls for tamper resistant operation with 2 dB detents for quick and repeatable settings
  • DataPort V2 HD-15 connector for use with DPV2-compatible external signal processing accessories
  • Full short circuit, open circuit, thermal, ultrasonic and RF protection
  • Independent defeatable clip limiters for reduced distortion, selectable 30Hz or 70Hz high-pass filters protect speakers and prevent speaker transformer saturation
  • Front panel indicators include power, signal, and clip; Stereo, Bridge and Parallel operating modes
  • Automatic variable-speed fan for quiet normal operation with maximum cooling, rear-to-front air flow
  • XLR and detachable Euro style input connectors, covered barrier strip output connectors with full safety agency compliance

    Product Code: 100258373

    Availability: Pre Order

    Regular Price: £699.00

    Special Price £350.00


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    Note: This is a B-Grade unit and will show signs of use and wear.

    The QSC ISA-450 3U rackmount power amplifier is designed specifically for sound contractors as a low impedance solution rated for 2-ohm operation at 700 watts per side, or 260 watts at 8 ohms. The versatile loading options, feature set and protection circuitry, in addition to the built-in HD-15 DataPortV2 DSP interface capability, ensures a high-value, cost-effective solution for budget-minded installations.
    Power Rating Stereo @ 2 ohms: 700W per channel
    Stereo @ 8 ohms: 260W per channel
    Bridged @ 8 ohms: 900W
    Damping Factor >200 @ 8 ohms
    Input Sensitivity 1.07Vrms
    Input Impedance 10 kOhm/20 kOhm (unbalanced/balanced)
    Gain 33dB
    Frequency Response 20Hz to 20kHz, +/-1dB
    Signal-to-Noise Ratio 100dB (20 Hz - 20 kHz)
    Total Harmonic Distortion (THD) <0.03%, 4 and 8 Ohms, 20 Hz - 20 kHz, 10 dB below rated power
    Input Connections 2 x 3-pin XLR Female, Balanced
    2 x 3-pin Detachable EuroBlock
    1 x HD-15 DataPortV2
    Output Connectors 2 x Covered Barrier Strips
    Controls Front Panel 1 x Power Switch
    Controls (Rear) 1 x 10-Position DIP Switch Set
    2 x Ch.1, 2 Gain Knobs
    Indicators 2 x Red Clip LED
    2 x Green Signal LED
    1 x Green Power LED
    Cooling Continuously variable speed fan, back-to-front air flow
    Power Consumption 0.5A at idle
    3.7A at 1/8 Power, 8 ohms
    9.3A at 1/8 Power, 2 ohms
    Dimensions 19 x 5.25 x 15.9" (483 x 133 x 400mm)
    Weight 42 lb (19 kg)
    Specialties Stable into reactive or mismatched loads
    Rear Panel Controls
    Comprehensive Protection Circuitry
    Packaging Info
    Package Weight 52.65 lb
    Box Dimensions (LxWxH) 23.9 x 22.0 x 8.9"

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