Purchased about 4 years ago and only used once, so it's in good condition. Operation has been confirmed. This is a listing for the main unit only. A multi-function line selector, equipped with 4 modes, ideal for connecting guitar effects. - Model: LS-2 - Type: Line Selector - Power: 9V battery - Input/Output Terminals: SEND, RETURN, OUTPUT, INPUT - Modes: A+B BYPASS, A BYPASS, B BYPASS, A+B MIX Thank you for viewing.