Power / Channel
Model	CH.	4 ohm 0.1%THD+N	4 ohm Max RMS	2 ohm 0.1%THD+N	2 ohm Max RMS	1 ohm 0.1%THD+N	Heat Sink Length	Weight (Kg)	Technology
GL-A512	1	200W	400W	350W	600W	500W	240mm	3.6	Class D
GL-A513	1	330W	650W	500W	850W	750W	300mm	4.4	Class D
GL-A515	1	350W	700W	600W	900W	900W	400mm	6	Class AB
GL-A521	2	60W x2	100W x2	80W x2	150W x2	-	180mm	2.7	Class AB
GL-A522	2	100W x2	170W x2	140W x2	220W x2	-	240mm	3.6	Class AB
GL-A523	2	150W x2	260W x2	220W x2	350W x2	-	350mm	4.5	Class AB
GL-A541	4	30W x4	50W x4	45W x4	65W x4	-	180mm	2.6	MOSFET Power supply / Integrated output stage
GL-A542	4	50W x4	80W x4	65W x4	100W x4	-	240mm	3.6	Class AB
GL-A543	4	75W x4	130W x4	110W x4	170W x4	-	300mm	4.5	Class AB
GL-A544	4	100W x4	160W x4	140W x4	220W x4	-	400mm	5.3	Class AB
GL-A553	5	30Wx4+100W	50Wx4+200W	45Wx4+180W	65Wx4+300W	-	300mm	4.5	MOSFET Power supply / Class AB  & Integrated hybird output stage
GL-A554	5	60Wx4+130W	60Wx4+230W	80Wx4+200W	120Wx4+320W	-	400mm	6	Class AB