Parts, Speaker switch: $12, Speaker terminals board 9/10 condition: $22, RCA jacks each pair 9/10 condition: $6, LC7816 Audio switch IC: $6, TA7060 IC: $6, 10,000 MFD 63V cap: $8, Function switch 4 position 8/10 condition: $14, K 240 Fet: $8. *Vince has noted that knobs for these units are actually quite unique and can be very hard to find, some even fetching around $20* Call for parts (617)926-8020