Add to Cart Quick view Hickok 6000 Vacuum Tube Tester in Very Good Condition, Needs Work Hickok MSRP: Now: $199.99 Was: Hickok 6000 Vacuum Tube Tester in Very Good Condition, Needs Work. This Hickok 6000 tube tester is considered one of the best out there, and is in pretty nice shape. It powers up okay and lights the filaments of the tubes inserted to test, however... MSRP: Now: $199.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $199.99 Was: Subtotal: Add to Cart