A faithfull 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.
Q: When does a tube become a Premium Selected tube?
A: All tubes labeled Premium Selected have passed the following tests:
– Plate Current (PC) and Amplification (TC)
– Low Noise Test
– Microphonic Test
– Sonic Tests
– Shock Tests
– Listening Tests
– Shorts & Leakage Tests