Product information "Tubeset for Blackstar Blackstar HT Metal 5 Head"
Tubeset for Blackstar Blackstar HT Metal 5 Head
In the first position (V1), this tube set features our RT010 7025 HIGHGRADE TAD Premium Selected. This tube works greatly for warm clean tones and creamy overdrive. We recommend this tube for the 1st gain stage and as input tube.
The all-new RT043 12BH7A-STR TAD Premium Selected combines the best sonic and mechanical performance of the NOS RCA black plate with advantages of the GE version. A maximum of reliability with outstanding tonal quality makes the new balanced selected TAD 12BH7A-STR the first power tube choice for the Blackstar HT-5(-R).
Regarding BIAS: please use PR1 trimmer to adjust a line drop of 47mV at the 4.7 Ohm resistor (R33). Before that, please make sure balance trimmer PR2 is in central position.
