Heritage Audio 73 DI 2

Active DI Box – Heritage Audio 73 DI 2

The 73 DI 2 is a dual-channel active DI box based on Heritage Audio’s 73-inspired design. It is suitable for stereo and dual mono setups, and with JFET inputs, transformer-based Class A output, and +48V phantom power, it provides high-quality sound for instruments, synths, and live applications.

Features

The unit has two independent channels, both using the 3-transistor 73 topology. Each channel features a J109 JFET input with 2.2 MΩ impedance and a custom Heritage Audio transformer. Each channel includes a -15 dB PAD, THRU outputs for parallel connection, and ground lift. Jacks and XLR connectors are gold-plated, and the construction is robust metal.

Specifications

• Type: Active DI box, dual-channel
• Inputs: Hi-Z 1/4” (6.35 mm) unbalanced
• Thru: 1/4” parallel outputs
• PAD: -15 dB per channel
• Outputs: XLR, balanced (Mic level, pin 2 hot)
• Power supply: +48 V phantom power
• Indicators: Red LEDs (power on)
• Chassis: 14-gauge steel, MIL-spec PCB