TAD GZ34-STR REDBASE
A faithful reproduction of the Mullard/VALVO GZ34 with the perfection of our REDBASE™ series.
Pure power and the typical sag have been the distinguishing characteristics of the most popular guitar amps of guitar heroes since the 1960s.
Equivalent to 5AR4, can replace 5U4GB and 5U4G.
TAD Premium Selection
Q: When does a tube become a Premium Selected tube?
A: All tubes labelled Premium Selected have passed the following tests:
- Plate Current (PC) and Amplification (TC)
- Low Noise Test
- Microphonic Test
- Sonic Test
- Shock Test
- Listening Test
- Shorts & Leakage Test
| Electrical Characteristics | |
| Heater | Indirecty Heated Cathode |
| Voltage (AC) | 5.0 V ±8% |
| Current | 2.1 A |
| Cathode | Coated, Unipotential |
| Mechanical | |
| Operating Position | Any |
| Base | Octal, 8-Pin |
| Dimensions - Height | 84 mm |
| Dimensions - Seated Height | 70 mm |
| Dimensions - Diameter | 32 mm |
| Dimensions - Base Diameter | 32.5 mm |
| Cooling | Convection |
| Approximate Net Weight | 40 g (1.41 oz.) |
| Maximum Ratings | |
| Maximum Peak Inverse Voltage | 1500 V |
| Maximum Peak Current (Per Plate) | 700 mA |
| Maximum Plate Voltage (RMS) Per Plate | 550 V |
| Maximum DC Output Current | 250 mA |
| DC Plate Voltage | 800 V |
| Maximum Capacitive Load | 60 uF |
| Bulb Temperature (Surface Hottest Point) | 250° C |
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