Add to Cart Quick view General Electric 6BF5 Audio Tube Sleeve of 5 GE MSRP: Now: $24.99 Was: This General Electric 6BF5 Audio Tube Sleeve of 5, are brand new tubes. this is the audio tube that has a lot of gain and is used in the Collins S-Line receivers. It tends to run hot because of the high gain so it is nice to have some spares. I... MSRP: Now: $24.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $24.99 Was: Subtotal: Add to Cart