RF-5TA CLASS T TECHNOLOGY minimum order : 200PCS 1) RMS:140Wx4ch+400Wx1ch @ 4 Ohm 2) Size:450x242x62mm 3) PCB double layer 4) terminal: perspective 5) Packing : color box 6 )heatsink :oxid black&line crack RF-5TB CLASS T TECHNOLOGY minimum order: 200PCS 1) RMS:100Wx4ch+300Wx1ch @ 4 Ohm 2) Size:450x242x62mm 3) PCB double layer 4) terminal: perspective 5) Packing : color 6) heatsink :oxid black&line crack RF-5TC CLASS T TECHNOLOGY minimum order: 200PCS 1) RMS:80Wx4ch+200Wx1ch @ 4 Ohm 2) Size:450x242x62mm 3) PCB double layer 4) terminal: perspective 5 )Packing : color 6) heatsink: oxid black&line crack