Mullard GZ34/5AR4

Mullard GZ34/5AR4

Made by Mullard Blackburn factory in Gt. Britain. The last version of Mullard GZ34 with old shield logo, dating to late 1960s and very early 70s. These tubes have single O-Getter and a hole on the center guide pin of the base. Nice tubes and hard to find in such a MINT condition!

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Sylvania 5AR4 / GZ34 Big Bottle-Fat Boy

Sylvania 5AR4 / GZ34 Big Bottle-Fat Boy

Milspec tubes made in 1975. These are mislabeled as 5V4GA, as it is shown in the photo. These are the same tube as those labeled 5AR4. Please see the reference photo below for comparison. The Sylvania big bottle 5AR4 can be considered as the second best to Mullard, which produces a bit more sag than the Mullard and is priced a bit less as well. If a Mullard is out of reach for you, this is the tube which would make a huge difference in the performance of your amp!

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