The ´73JR is true 1073 style mic preamp in a single 500 series slot with some added features that will cover all the recording needs for engineers and musicians that don´t find the need to track with eq.
Employing only discrete circuitry and conventional components, the ’73 junior is a faithful 3 stage all class A 1073 preamp. Styroflex and tantalum capacitors have been used throughout. No corners were cut.
A useful all discrete class A hi pass filter has been added, essential for recording everything with the exception of probably kick drum and and bass.
The Line mode allows for reamping of prerecorded tracks and it´s perfect for adding some class A color to lifeless recordings.
The smart switched DI (automatically switches from MIC to DI mode when inserting a MONO ¼” jack) is an all discrete class A JFET circuit ahead of the MIC transformer, so all the juice is there. Since its introduction in 2013, it has become a classic DI for bass.
Finally, special care has been taken with power handling, implementing internal +24v slow turn on regulation (about 20 seconds to reach full voltage).This makes your 500 series enclosure´s power supply healthier and makes the ´73JR independent of the rest of the slots
- 80 dB Class A microphone preamp
- HI-LO selectable input impedance
- At high input amplification, the input impedance rises
- Ideal for ribbon microphones
- 50 dB Class A line preamplifier
- Discrete Class A J-Fet DI input with enormously high input impedance
- The DI input comes before the input transformer of the microphone input, therefore it is in the signal path
- The DI input is automatically activated when the jack is in use.
- Class A single-ended
- 2N3055 output stage with high headroom
- PAD: 20 dB switchable input attenuation before the input transformer to avoid overloading
- HI-PASS FILTER: Active, discrete Class A high pass filter at 80 Hz
- 18 dB per octave
- OUTPUT level control for controlled overloading of the input stage
- Carnhill input and output transformers