QSC ISA-300Ti 70V/100V Distributed Power Amplifier

The ISA-300Ti is a cost-effective distributed audio amplifier built for sound contractors running mixed 8 or 4 ohm and 25V/70V/100V systems from a single chassis. Isolated voltage outputs let the same channel drive a distributed paging line and a direct low-impedance zone at once, and the 3U chassis runs in stereo, bridge, or parallel modes to match the job.

Rear-panel gain controls with 2 dB detents keep field adjustments tamper-resistant, and selectable 50 Hz or 75 Hz high-pass filtering protects distributed lines from unnecessary low end. DC, infrasonic, thermal, RF, and short-circuit protection are built in, backed by a 3-year standard warranty.

Chassis	3U rack, XLR and detachable Euro-style input connectors
Outputs	Isolated 25V, 70V, and 100V, plus 8 ohm / 4 ohm direct
High-Pass Filters	50 Hz or 75 Hz, selectable
Operating Modes	Stereo, bridge, or parallel
Gain Control	Rear-panel, tamper-resistant, 2 dB detents
Protection	DC, infrasonic, thermal overload, RF, and short-circuit
Warranty	3-year standard, optional 3-year extended service