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Message: [QUOTE="Munyaradzi Mafaro, post: 63338, member: 636"] Heritage Audio released four DI boxes that expand its hardware catalog with passive and active signal processing options. The P DI One and P DI 2 use custom transformers for impedance conversion and balance audio signals without requiring power, and the design blocks DC voltage interference. Heritage Audio applied knowledge from its RAM monitor controller development to create the transparent sound profile in these passive units. The 73 DI One and 73 DI 2 feature active circuits with J109 JFET input stages that provide 2.2 megaohm impedance. A metal-can 2n3055 output transistor drives a custom transformer to shape instrument tones similar to vintage preamps. The active models work with guitars, basses, keyboards, synthesizers, and drum machines. Prices range from 119 euros for the P DI One to 349 euros for the 73 DI 2. [/QUOTE]