|  | Evolution Audio Grade | Evolution Standard | Classic Audio Grade | Classic Standard | 
					
						| Terminal clamp | WattLock with teeth | WattLock with teeth | Permalock | Permalock | 
					
						| Conductor gauge | 8awg / 14awg | 8awg / 14awg | 10awg / 16awg | 10awg / 16awg | 
					
						| Cable OD | 19mm / 9.5mm | 19mm / 9.5mm | 16mm / 7.7mm | 16mm / 7.7mm | 
					
						| Front Housing | Polycarbonate | Polycarbonate | Glass filled nylon | Glass filled nylon | 
					
						| Back Housing | Polycarbonate | Polycarbonate | Polycarbonate | Polycarbonate | 
					
						| Model number marking | Laser etched anodized ring | Plastic ring | Sticker | Back ring | 
					
						| Audio Grade mark | front face | none | front face | none | 
					
						| Assembly hardware | non-magnetic 2.5mm hex head | non-magnetic 2.5mm hex head | non-magnetic #2 phillips | non-magnetic #2 phillips | 
					
						| Base metal | High spring rate brass | High spring rate brass | High spring rate brass | High spring rate brass | 
					
						| Contact plating | Gold or Rhodium (see metallurgy) | none | Gold, Silver, or Rhodium (see metallurgy) | none | 
					
						| RoHS compliance | yes | yes | yes | yes | 
					
						| UL compliance | 330 evo, 350 evo | 5266 evo, 320 evo | 330i, 350i, 350i HC | 5266i, 320i, 320i HC | 
					
						| cUL compliance | 330 evo, 350 evo | 5266 evo, 320 evo | none | none | 
					
						| CSA compliance | none | none | 330i, 350i, 350i HC | 5266i, 320i, 320i HC | 
					
						| CE compliance | 350 evo, 390 evo | 320 evo, 360 evo | 390i | 360i |