9RearFig. 745. Power switch46. Stereo/mono switch47. Master RCA unbalanced output48. Booth RCA unbalanced output49. Record RCA unbalanced output50. Channel 4 Line RCA input51. Channel 4 Phono RCA Input52. Channel 4 CD RCA input53. Channel 3 Line RCA input54. Channel 3 CD RCA input55. Channel 2 Line RCA input56. Channel 2 CD RCA input57. Channel 1 Line RCA input58. Channel 1 Phono RCA input59. Channel 1 CD RCA input60. AC inlet with integrated fuse holder61. Trim output control62. Master XLR balanced output63. GND screw64. Return input65. Send input66. USB 2 input67. USB level control68. USB 1 input69. GND screw