The Heritage Audio 73 DI 2 is a dual-channel active DI box that embeds the sonic signature and harmonic richness of Heritage’s 73 topology into direct instrument routing. Each channel uses a discrete Class A JFET front end driving a custom low-impedance, transformer-coupled output (the “73-DI” transformer) to produce a dynamic, colored direct sound while maintaining strong signal integrity and low noise. The unit is built in a rugged extruded aluminum frame with recessed connectors and 14-gauge steel panels to minimize mechanical stress and withstand road use. Thanks to its high input headroom, the 73 DI 2 not only excels with passive instruments like electric guitars and basses but is also well suited for keyboards, synths, drum machines, and other line-level sources without coloration loss. It aims to combine the “vintage warmth and vibe” of the 73 sound with the convenience and noise/immunity advantages of a professional direct box topology. The 73DI 2 is the two channel version of the .

• Dual active DI channels in one enclosure
• Active two-channel DI (not passive)
• Class A discrete JFET input stage (same style used in Heritage’s high-end gear)
• Custom Heritage 73-DI output transformer for balancing and coloration
• Outstanding signal integrity and superior noise rejection
• Rugged extruded aluminum + 14-gauge steel enclosure (stress-resistant)
• MIL-spec circuit board with full ground plane for ultra-quiet performance
• 15 dB pad switch (to attenuate higher input levels)
• Ground lift switch (to avoid ground loops)

• Input stage: Class A, discrete JFET (as used in top Heritage gear)
• Output: Balanced via custom 73-DI transformer
• Enclosure: Extruded aluminum body + 14-gauge steel panels
• Circuit board: MIL-spec, full ground plane
• Switches: Rugged metal, > 25,000 cycles
• Connectors: Gold-plated input / thru (¼") and gold XLR outputs
• Power: +48 V phantom power required (with red LED indicator)

• Heritage Audio 73DI 2 Dual Active Direct Box
• Manufacturer Warranty