Heritage Audio 73JR II 500 Preamp

Heritage Audio 73-JR II - A Premium 73 Style Mic Preamp for 500 Series

The Heritage Audio 73-JR II is a 2021 update to the acclaimed 73 JR, a true 73 style mic preamp designed for a single 500 series slot. This unit is tailored for engineers and musicians who prioritize exceptional preamplification without the need for tracking with EQ.

Key Features:

• Authentic 73 Style Preamp: Faithfully replicates the 3 stage all Class A preamp design of classic 73 units, offering the characteristic sound with no compromises.
• High-Quality Components: Utilizes Styroflex and tantalum capacitors throughout, ensuring top-tier audio fidelity.
• Updated Discrete Class A High Pass Filter: Now sweepable from 20 to 220 Hz, providing enhanced control over low-end frequencies without affecting desired tones.
• Versatile Line Mode: Ideal for reamping prerecorded tracks and adding Class A color to lifeless recordings.
• Superior DI Performance: Features an all discrete Class A JFET circuit ahead of the MIC transformer, making it a preferred DI for bass since its introduction.
• Power Handling: Includes internal +24 V slow turn-on regulation, ensuring healthier power supply and independence from other slots in your 500 series rack.

Specifications:

• Input Impedance: Microphone: HI=1200 Ω minimum, LO=300 Ω minimum; Line: 10 kΩ; DI: >2 MΩ
• Output Impedance: <75 Ω, transformer balanced and floating
• Max Output Level: >+26 dBu into 600 Ω
• THD: <0.025% at 1 kHz, <0.05% at 100 Hz
• Frequency Response: 20 Hz (+0.3 dB) to 20 kHz (-0.2 dB)
• Maximum Gain: >80 dB
• Noise: <-125 dBu EIN
• Power Consumption: 86 mA per rail ±16 V DC
• Exclusive Transformers: Features Carnhill output and input transformers made exclusively for Heritage Audio

The Heritage Audio 73-JR II is not just another preamp; it's a meticulously crafted tool that captures the essence of classic 73 preamps, suitable for the most discerning audio professionals.