Functionality not confirmed. The metal piece inside the TAPE3 switch has come loose and is rattling. The switch itself operates normally. Thank you. SONY SB-500 Microphone Selector with Tape Copy Function, Multiple Connection Terminals. - Brand: SONY - Model: SB-500 - Function: Microphone Selector - Connection Terminals: Tape Recorder Terminals (1, 2, 3) - Controls: Tape Copy, Source Selection Switch - Monitor Function: Monitor Output Thank you for viewing. #audio #sony #denon