QSC

QSC ISA300Ti 2-Channel 300W Power Amplifier 70V

5.0 (4 reviews)
300WXLR

Deliver Powerful Sound with the QSC ISA300Ti Power Amplifier The QSC ISA300Ti Power Amplifier is a 2-channel rack-mount stereo amplifier designed for installed sound systems. With 300 watts per channel at 70 volts, it provides reliable and cost-effective power for a variety of applications. Spec...

$699.00*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

Deliver Powerful Sound with the QSC ISA300Ti Power Amplifier

The QSC ISA300Ti Power Amplifier is a 2-channel rack-mount stereo amplifier designed for installed sound systems. With 300 watts per channel at 70 volts, it provides reliable and cost-effective power for a variety of applications.

Specifications:

  • Model: ISA300Ti
  • Channels: 2
  • Power Output: 300 Watts per channel (70 Volt)
  • Features:
    • Selectable High-Pass Filters
    • DC, Infrasonic, Thermal Overload, RF and Short Circuit Protection
    • Rear Panel Gain Controls
    • XLR and Detachable Euro Style Input Connectors
    • DataPort V2
    • Independent Defeatable Clip Limiters
    • Front Panel Indicators (Power, Signal, Clip)

Key Features

Rear panel gain controls for tamper resistant operation with 2 dB detents for quick and repeatable settings.

XLR and detachable Euro style input connectors.

DataPort V2 for use with DPV2-compatible signal processing accessories XC-3, SF-3, LF-3 and DSP-3DSP-4 with external power supply.

Independent defeatable clip limiters for reduced distortion.

Front panel indicators include power, signal, and clip.

Specifications

Channels
2
Power Output
300W
Voltage Output
70V
Gain Controls
Rear panel with 2 dB detents
Input Connectors
XLR, Detachable Euro style
DataPort
DataPort V2
Clip Limiters
Independent, defeatable
Front Panel Indicators
Power, Signal, Clip

Pros & Cons

👍 Pros

  • Features rear panel gain controls with 2 dB detents, allowing for precise and repeatable settings and tamper-resistant operation.
  • Includes independent, defeatable clip limiters, which help to reduce distortion and maintain audio clarity.
  • Equipped with a DataPort V2 for seamless integration with DPV2-compatible signal processing accessories like XC-3, SF-3, LF-3, and DSP-3/DSP-4.
  • Offers flexible input connectivity with both XLR and detachable Euro style connectors to suit various professional setups.
  • Front panel indicators for power, signal, and clip provide clear status updates on the amplifier's operation.

👎 Cons

  • Requires DPV2-compatible signal processing accessories to fully utilize the DataPort V2 functionality.
  • The external power supply needed for DSP-3/DSP-4 accessories with the DataPort V2 is not included.
  • Users will need to ensure their existing audio setup is compatible with 70V output for proper integration.
  • The specific applications and benefits of the 70V output might not be necessary for all users or environments.
  • The focus on tamper-resistant operation might reduce immediate front-panel accessibility for quick adjustments.

Frequently Asked Questions

The QSC ISA300Ti amplifier is equipped with both XLR and detachable Euro style input connectors for versatile connectivity options.
Yes, the ISA300Ti features independent, defeatable clip limiters, allowing users to choose whether to engage them to reduce distortion.
The DataPort V2 allows the amplifier to be used with DPV2-compatible signal processing accessories such as the XC-3, SF-3, LF-3, and DSP-3/DSP-4.
The rear panel gain controls include 2 dB detents, which provide precise and repeatable settings while offering tamper-resistant operation once set.
The front panel indicators show the status of power, signal presence, and clip activity, providing essential operational feedback.