Codes are f31 x8D. 5AR4 / GZ34 Tube. This tube is stamped on the base, not etched in the glass. It is very close to NOS testing on TV/7 and NOS Testing on Amplitrex. Balanced sections. Amperex Bugle Boy.
Item Tag: 5AR4 GZ34
MULLARD BLACKBURN SYLVANIA CO-BRANDED 5AR4 GZ34 RECTIFIER TUBE (tested strong)
Related Images:
5AR4/GZ34 Psvane rectifier tube tested new black base
AAAAA+++++.
Related Images:
ARS 5AR4/GZ34 Grey plate rectifier tube 100 each side NIB NOS!
I back my tubes up. The pictures shows a Mullard 5AR4/GZ34 Grey plate rectifier tube 100 each side NIB NOS! These are well regarded early Chinese production. Price reflects demand. Tube Tester Scale reads.
Related Images:
Pair of Sylvania 5AR4 GZ34 (5V4GA relabel) NOS NIB Vacuum Tubes #1
Actual manufacturer Sylvania. Excellent balance between sections and near-perfect matching between tubes. From a small lot of identical tubes. Small signal (i.e. 12AX7) tubes are generally checked for noise and microphonics; power tubes (i.e. 6L6) are usually not.
Related Images:
(1) NOS Testing Mullard 5AR4/GZ34 F32 B5X5 OO Getter Guitar Audio Tube
(1) NOS Tested Mullard 5AR4/GZ34 OO Getter F32 Code Atduio Tube, Tests 59/62 with Min. Value being 40/40 so this tube test 100% (((((I do not lower declared value or write as gift due to US Laws))))) I no longer ship to China & Vietnam due to lost packages in Custom’s
Related Images:
Philips 5AR4/GZ34 Rectifier – DD-Getter – f32 X9F – 1959 Holland – Very Strong
Location/Date code X9F (visible on glass – see pics): X is Sittard Holland Factory, 9 is 1959, and F is June. The batch code, location/date code, tube construction, and specifications verify its identity.
Related Images:
(1) NOS/NIB Amperex Bugle Boy 5AR4 GZ34 Brown Base Rectifier Tube ~ TESTS STRONG
Up for sale is a RARE brown base GZ34 5AR4 Amperex Bugle Boy rectifier tube. Top dual “D” getters. Date code is f33 X9l. Manufactured in 1959! 5AR4 GZ34 Brown Base Tube. (1) NOS/NIB Amperex Bugle Boy.
Related Images:
Single Sylvania 5AR4 GZ34 (5V4GA relabel) NOS NIB Vacuum Tube
Actual manufacturer Sylvania. Nominal values are given for reference on many tubes. Parcels typically arrive to most locations around the world in a week or less. Small signal (i.e. 12AX7) tubes are generally checked for noise and microphonics; power tubes (i.e. 6L6) are usually not.