Blackstar Ht Dual Pedal Schematic Info

The pedal takes 16V AC and boosts it internally to roughly 300V DC. This "B+" voltage is what allows the 12AX7 (ECC83) tube to operate in its linear region, providing real headroom.

The Blackstar HT-Dual is a modern classic in the world of tube-driven distortion. Unlike "starved plate" designs that run tubes at low voltages for show, the HT-Dual uses a high-voltage internal power supply to get genuine valve compression and harmonic richness. Blackstar Ht Dual Pedal Schematic

A high-impedance stage that preserves your guitar's high-end before the gain stages. The pedal takes 16V AC and boosts it

A complex arrangement of FET switches and logic gates that toggle between the "Clean/Crunch" channel and the high-gain "Lead" channel. Unlike "starved plate" designs that run tubes at

The HT-Dual is essentially a two-channel tube preamp in a box. The schematic revolves around these critical stages: