Output knob: $10; Input, mic, line knobs ( 1 top and 2 bottoms ); $14 per set; Channel card board #52100748-01: -tested good - $60; Sensor PCB-114 #52100739: $12; Monitor AMPL PCB-105 #52100782: $50; Motherboard #52100779-00: $8; Tape arm opto front sensor: $12; Belt: $18; Reel tables (#8+ condition): $58 each; 1 Take up side brake assembly with spring arm: $14; 1 Supply brake band assembly with spring arm: $14; 1 Supply tension arm LEFT SIDE: $16; Pitch control w/knob 51679380: $24; 1 Cue flip switch: $16; 1 Pitch roller cap: $16; 1 Output control 100KAX2: $12; 2 Tape Rollers -worn but good-4 $26 each; 1 Flutter Roller w/Cap: $34; Speed switch board 5210074501 (3 switches board & mounting hardware): $24; 1 Capstan Cosmetic Collar: $16; 1 In/Out Back Panel PCB 52100781-01: $16; 3 Button Tops : $4/ea; Other Mechanics: Call direct 617-926-8020 12 noon to 7pm