Add to Cart Quick view Mixed Brands 12BY7A New Old Stock Vacuum Tubes Sleeve of 5 Westinghouse MSRP: Now: $22.00 Was: Mixed Brands 12BY7A New Old Stock Vacuum Tubes Sleeve of 5 ( 4 Westinghouse, 1 RCA ) The 12BY7A is a miniature sharp-cutoff power pentode vacuum tube, optimized for high-frequency amplification with... MSRP: Now: $22.00 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $22.00 Was: Subtotal: Add to Cart