Set of four vintage '60s Telefunken EL34 Vintage Vacuum Double O-O Getter Pentode valves.
Three are almost identically matched on both mutual conductance and current, whereas the fourth matches the other three for mutual conductance but is about 8% off for current. From a testing perspective, this is a matched quad of NOS tubes.
Video: https://youtu.be/PyBWcQbuvVY
Product Specs
- Item Number: 1501
- Make: Telefunken
- Model: EL34
- Condition: Excellent
- Categories: parts ⇒ tubes
- Year: 1960s
- Made In: Germany