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I don't agree that 1960s era valve audio is often found dead/has bitten the dust.. many times I see old EICOs, HKs, Scott and Fishers being used even in unrestored condition. Even the often-ghastly sounding early germanium solid state amps keep functioning halfway decently..
With TV receivers, the kine's cathode emissivity dictates brightness and color tracking ability. But remember that 'up-front', the RF stages in an NTSC receiver can be trickier to align and repair....
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