Heritage audio 73EQ JR

This module delivers the full transformer-based Class A “73” sound on its own — no external preamp required. Ideal for adding that classic Neve thickness, presence, and musicality to vocals, bass, guitars, drums, and more in a single 500-series slot.

• Authentic 1073-style 3-band EQ with transformer-coupled Class A circuit
• High shelf: ±16 dB Baxandall, selectable at 10 / 12 / 16 / 20 kHz
• Low shelf: ±16 dB Baxandall, selectable at 35 / 60 / 110 / 220 Hz
• Mid band: ±18 dB dual-inductor peaking (fixed Q), selectable at 0.36 / 0.7 / 1.6 / 3.2 / 4.8 / 7.2 kHz
• Built-in Class A line amplifier with gain range of +6 dB to –20 dB (great for heavy EQ boosts without overloading converters)
• Carnhill transformers (input and output)
• Class A single-ended output stage driven by 2N3055
• Internal slow-turn-on +24 V regulation for better lunchbox PSU compatibility
• Marconi-style knobs and classic look/feel
• EQ on/off (EQL) switch