QSC ISA 300 Ti 2-channel Power Amplifier

2-channel Power Amplifier, 280W Program/ch at 4 ohms, with 25, 70, 100 Volt Outputs, Simultaneous Low Impedance Outputs, Speaker Protection
QSC ISA 300 Ti 2-channel Power Amplifier image 1
QSC ISA 300 Ti 2-channel Power Amplifier image 1
$633.00
Sweetwater Savings: $160.00 MSRP: $793.00
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Or just $27/month§ for 24 months

0% interest for 24 months*. 24 equal monthly payments required. Valid through 6/30/2017. Learn more

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The Sweetwater Difference

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QSC ISA 300 Ti 2-channel Power Amplifier
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QSC for your installed system!

QSC designed the ISA 300Ti as a cost-effective solution specifically with sound contractors in mind. The ISA 300Ti can drive both eight and four ohm loads and a distributed system on the same channel at the same time, allowing you to reduce the number of amplifier channels needed to power the speakers from the same amp. This rugged power amp can output 25, 70, or 100 volt to accommodate distributed audio systems, making this the perfect power amp for countless installed in-ceiling systems. Add QSC sound quality to your system with the ISA 300Ti!

QSC ISA 300Ti Power Amp at a Glance:
  • Unique load dispersion
  • I/O
  • Speaker protection
Unique load dispersion

Unique among distributed sound power amplifiers, the "Ti" versions will drive eight or four ohm loads and a distributed system on the same channel simultaneously. This enables a contractor to reduce the number of required amplifier channels by allowing a limited number of distributed speakers to be attached to the same amp as is powering the main sound system.

I/O

A power amp has to be able to withstand daily use and abuse, and it must also be equipped with a wide variety of input and output options. The ISA 300Ti easily handles both. Housed in a rugged 3-U chassis, all ISA models feature rear panel gain controls for tamper resistant operation with 2dB detents for quick and repeatable settings. Inputs include both XLR and detachable Euro-style connectors, and outputs feature covered barrier strip connectors for safety agency compliance. For added versatility, a DataPort V2 (Version 2) terminated with an HD-15 connector is provided for use with DPV2-compatible signal processing accessories such as the XC-3 Crossover, SF-3 Subwoofer Filter, LF-3 Low Frequency Filter and the DSP-3 with external power supply.

Speaker protection

Any live sound engineer can tell you about the importance of protecting your speakers while maintaining the integrity of the performance. Selectable highpass filters are included to protect speakers and prevent speaker transformer saturation with minimal effect on program material. The ISA Series provide additional protection circuitry including DC, infrasonic, thermal overload, RF and short circuit protection.

QSC ISA 300Ti Power Amp Features:
  • Low-impedance and isolated 25, 70, and 100 volt outputs for distributed audio systems
  • Rear panel gain controls with 2dB 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-3/DSP-4 (with external power supply)
  • Independent defeatable clip limiters for reduced distortion
  • 50Hz or 75Hz selectable highpass filters protect speakers and prevent speaker transformer saturation with minimal effect on program material
  • Front panel indicators include power, signal, and clip
  • Covered barrier strip output connectors for safety agency compliance
  • Automatic variable-speed fan for quiet normal operation with maximum cooling on demand
  • Rear-to-front air flow keeps equipment racks cool
  • Stereo, Bridge, or Parallel operating modes
  • Comprehensive protection circuitry including DC, infrasonic, thermal overload and short circuit protection
  • 3-year warranty plus optional 3-year extended service contract
  • 25, 70, 100 volt, and low-impedance outputs available simultaneously
  • Simple barrier strip connection determines output mode
Premium QSC sound with the ISA 300Ti!

Additional Media

Power Amp Buying Guide

Tech Specs

Number of Channels 2
Power Class Class H
Watts/Side @ 8 ohms 185W, 200W 25V, 300W 70V/100V
Watts/Side @ 4 ohms 280W, 200W 25V, 300W 70V/100V
Watts/Side @ 2 ohms 430W, 200W 25V, 300W 70V/100V
Watts Bridged 830W @4 ohms, 600W 140V
Inputs 2 x XLR, 2 x Euro
Outputs Barrier Strip
Cooling System Automatic variable-speed fan for quiet normal operation with maximum cooling on demand
DSP Yes
Filters Yes
Rack Spaces 3U
Height 5.25"
Depth 15.9"
Width 19"
Weight 44 lbs.
Manufacturer Part Number ISA300Ti

Customer Reviews

5/5
Based on 2 reviews
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5/5

Number one customer service!

The Kenova, WV, Park Board replaced a Very old amp at Historic Dreamland Pool with the QSC ISA 300 Ti. We contacted Jason Koons for his advice on a replacement, and this was his recommendation. It was within budget and is a perfect unit for the pool. It was delivered within 24 hours from the time the order was placed, without expedited shipping! It doesn't get any better than Sweetwater!
Music background: Musician for 40+ years, owner of live sound/lighting company
5/5

QSC Monster Amp

This amp has so many ways to configure ... I used it as a 70 Volt to Drive 5 20watt tapped speakers on each channel, loud and clear at 2 clicks ...
Music background: AV and HT
See also: Power Amps, QSC, QSC Power Amplifiers