Heritage 1073 Jr
Heritage 1073 Jr: Mic, Line and Instrument Preamp Module – 500 series
- Mic, Line and Instrument preamp in a single 500 series module
- Faithful 3 stage all class A preamp
- All discrete class A Hi Pass filter
- Smart switched DI (automatically switches from MIC to DI mode)
- Microphone input impedance:
- HI, 1200 Ohm minimum,
- LO, 300 Ohm minimum.
- Higher gain positions gradually have greater impedances, optimum for lo gain ribbon mics.
- Input is transformer balanced and floating.
- Line input impedance: 10K Ohms bridging, transformer balanced and floating.
- DI input impedance: Greater than 2 Megohms, unbalanced.
- Output impedance: Less than 75 Ohms, transformer balanced and floating, to drive a load of 600 ohms (factory terminated).
- Maximum output: Greater than +26dBu into 600 ohms.
- THD: Less than 0.025% at 1 Khz, less than 0.05% at 100Hz.
- Frequency response: 20Hz ( +0.3dB ) to 20Khz (-0.2dB)
- Maximum gain: Slightly greater than 80dB
- Noise: Less than -100dBu.
- Power consumption: 88 mA per rail @+-16VDC.
- More info here.