Features:

Bi-polar output stage technology for the finest sound quality and reliability

High output power to drive professional loudspeakers without clipping

Comprehensive protection circuitry with protect LED indicator

1/4" TRS & XLR balanced/unbalanced inputs

SpeakonTM & 1/4" speaker outputs

Three modes of operation: stereo, parallel mono, and mono bridge

Ground lift switch

Decibel (dB) level meter with clip LEDs

Selectable voltage for worldwide operation

Dual aluminum extrusion heat sink design with directly mounted output transistors for no-fault operation

Air guide with front-to-rear airflow and cooling fan for thermal stability and reliability

Compact 2U well balanced enclosure

Steel reinforced chassis

Frequency Response of 30Hz @ 50 kHz

Signal to Noise Ratio of 100 dB below rated power at 8 ohms

Dimensions:

19" W x 10.75" D x 3.5" H (483 x 273 x 89 mm)

Weight: GPA 1000

16.3 lbs (7.4 kg) GPA 2000

17.8 lbs (8.1 kg)

GPA 3000

20.2 lbs (9.2 kg) GPA 4000

21.6 lbs (9.8 kg)