The Heritage Audio '73 JR (or HA73JR) is a 1073-style mic preamp for the popular 500 Series modular format with all discrete circuitry and Carnhill transformers. Using much of the same components as the company's 10-Series 1073 and the popular 1073/500 mic pre / EQ module, the '73 JR has all of the fat, warm tone you'd expect from this kind of preamp. A line switch lets you run prerecorded material through, and a fixed high-pass filter takes out the rumble when necessary. When it's time to record keys or bass, leverage the front-panel DI input and get all the tone of this pre.