GZ37 / CV378 / 53KU / U54 Mullard Full-Wave Rectifier
Although not an exact drop-in replacement for a 5AR4/GZ34 , the Mullard GZ37 can be substituted
for one in many applications.
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All prices are per tube
Cossor 53KU=CV378
$899.98NOS 53KU- Cossor Made 1948-1953 brown base/grey plates- solid round disc side getter halo in original Cossor boxes! The best of the best! Made by A.C. Cossor / Cossor House Highbury Grove/High Wycombe UK. $899.98 for the matched pair ( Please note: Only one matched pair is left in stock; identical matching at 198mA/198mA)
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All prices are per tube
Cossor 53KU=CV378 1950’s black base
$399.99NOS 53KU- Cossor Made 1953 black base/black plates- solid round disc side getter halo in original military box! Made by A.C. Cossor / Cossor House Highbury Grove/High Wycombe UK. $399.99 per tube. ( Please note: Only one piece is left in stock and the base was cracked and fixed by the british military and stamped on the tube, see pictures ; slight particles inside base but does not affect sound whatsoever.)
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All prices are per tube
High Wycombe GZ37
$399.9953KU=GZ37 Base is cracked/repaired but functions tests perfectly. Rare black base version of CV378=GZ37 tube type. Only one piece available.
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All prices are per tube
Mullard GZ37
$159.99Mullard NOS NIB GZ37=CV378 - Another very well known rectifier which can often be used in place of a 5AR4 GZ34. These are NOS in original military boxes with most being from 1952!!! Get them while they last! Just $159.99 each! This is a suitable replacement for any CV378=GZ37 tube type. Various brands available.
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