hi.can you take a line out of this to chain this to another amplifier ??

Hello. I don't think you can. This is a power amp and it is different than a bass amp or guitar amps that have waist chain options. You can run a speaker cab that has a output on it. For example..You run a non-powered PA cabinet with this and that cabinet has an output where you can disperse the power to that cabinet and another cabinet. You can do that only because of the speakers but this amp cannot do a chain of any sort.

Is this claimed 300 watts peak or rms? also is this into 8 ohms, 4 ohms, etc. and is this power per channel or total output?

300W PROGRAM PER CHANNEL, into an 8 ohm load. 425W PROGRAM PER CHANNEL into 4 ohms. Wattage runs higher if only one channel is driven. All watts are rated at PROGRAM. Expect RMS to be about 50-100W more.

Can you have two pairs of speakers connected to this thing?

Two pairs of 8 ohm speakers..yes..each channel can play up to 4 ohm load.. Which is two 8 ohm speaker connect in parralel.. Per side.. Or four 8 ohm to a amp.. Or connect 2. X4 ohm in series to side to give 8 ohm per side

Does this amps have automatic trigger to be use with a ht processor ? i'm thinking no, as it's a pro amps but asking anyways..thanks

Hi, if you mean off/on with the receiver, then no. Or at least I saw none on the back. I use it with my 2 channel receiver and turn it off separately. Hope this helps.

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GX3 300-Watt Power Amplifier

Product ID: 1098599

Details

Item dimensions L x W x H
16 x 19 x 4
Manufacturer
QSC
Maximum Supply Voltage
230 Volts
Minimum Supply Voltage
120 Volts
Voltage
230 Volts

⚡300W peak power output

🎚️Dual-channel with sub/satellite crossover

🛡️GuardRail overload protection

Description

⚡ Power your passion with precision and protection!

PRO GRADE VERSATILITY - Optimized for popular 4Ω and 8Ω speakers, perfect for DJs, bands, and live entertainers.
UNMATCHED RELIABILITY - GuardRail tech safeguards your gear by preventing overloads and distortion during peak moments.
PLUG PLAY SIMPLICITY - Positive/negative binding posts and easy hookup make setup seamless for any gig or studio.
TAILORED AUDIO CONTROL - Integrated subwoofer/satellite crossover for precise sound balancing and enhanced clarity.
POWER MEETS PORTABILITY - Compact 12.1 kg design delivers pro-level 300W power without the bulk.

The QSC GX3 is a lightweight, 300-watt dual-channel power amplifier engineered for professional entertainers seeking high-quality sound and reliability on a budget. Featuring advanced GuardRail protection, a subwoofer/satellite crossover, and compatibility with popular 4Ω and 8Ω speakers, it delivers clean, distortion-free audio with easy setup and durable construction.

Specifications

ASIN	B0018D63KO
Best Sellers Rank	#31,573 in Musical Instruments ( See Top 100 in Musical Instruments ) #125 in Power Amplifiers
Brand	QSC
Customer Reviews	4.3 4.3 out of 5 stars (96)
Item Type Name	A-B Box
Item Weight	12.1 Kilograms
Manufacturer	QSC
Mfr Part Number	GX3
Model Number	GX3
Unit Count	1.0 Count
Warranty Description	1 year.

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