The Siemens EL34 / 6CA7 is a power output vacuum tube commonly used in compatible tube amplifiers, including audio and guitar amplifier applications. The EL34 type is known as a pentode power tube and is widely used in amplifier circuits that require this specification. This listing includes a set of four Siemens EL34 / 6CA7 tubes identified as “Lot 591”. These tubes are intended for equipment designed to use EL34 / 6CA7 power tubes. Please check the tube type, socket compatibility, and bias requirements of your amplifier before placing an order.
This is a set of four vintage Siemens EL34 vacuum tubes and this item has been tested. The glass and internal parts appear clean overall. As vintage items, there may be minor age-related wear, storage marks, or fading on the printed markings. Please review the photos and description carefully before placing an order.
| Brand / Manufacturer | SIEMENS |
| Tube Type Code | EL34 / 6CA7 Power Pentode |
| Production Lot Code | Lot 591 |
| Total Quantity | 4 Pieces (Quad Matched Set / 4本セット) |
| Operational Status | Unused (未使用品) — Fully Checked & Tested |
| Cosmetic Profile | Clear Glass Variant (クリア系) |
| Ideal Application | Marantz, McIntosh, High-End Tube Amplifiers |
| Dimensions (Per Tube) | Approx. 4.33 x 1.50 inches (110 x 38 mm) |
| Gross Weight (Set of 4) | Approx. 7.76 oz (220 g) *excluding shipping safety packing |
| Country of Manufacture | Germany |