These two DI-options makes it possible to get different tones from electric instruments and the passive DI input mode is more suited for injecting active units like sound modules.Ī new feature is the switchable AIR mode that adds a boost above 10 kHz that peaks at 6 dB around 30 kHz. The DI input is then exactly the same as in the PRE-73 MKIII where the signal is feed directly into the second gain stage, bypassing the transformer and with an input impedance of about 100 kohm. The DI-input is very flexible since it can be changed to a purely passive one by a front panel switch. The output signal from the active DI circuit passes through the input transformer for some extra character. Phantom power and phase reverse is also selectable by front panel switches.Īn added feature, using the same circuit as in the PRE-73 DLX, is the active DI-input with a high input impedance of about 1,5 Mohm. The input impedance of the mic input mode can be switched between 1200 and 300 ohm. The input can be configured to accept line level signals by another switch, the gain is then lowered by about 30 dB and the input impedance increased to about 10 kohm. The 20 – 70 dB range is handled by a turn switch and there is a separate toggle switch to select an additional 5 or 10 dB gain. It has a total gain range from -10 to +80 dB. The circuit still uses the preamp and output section from the classic 1073-module, adapted to work in the api rack format. The PRE-573 MKIII is a one width module for the api 500 format that has the sound and the features that made the PRE-73 so successful and a few additional ones.
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