Pre-73 Mk III Do experiment with mic placement

Do experiment with mic placement and with the filters

The meter can show output level or gain reduction

It will exhibit a bass boost in the 75-300 Hz area at short distances due to the proximity effect which can help make voices and instruments sound fuller

The line input and output are transformer balanced and the unit also has a third interstage transformer

Pre-73 Mk III Do experiment with mic placementThe PRE 73 MKIII is a one channel vintage style microphone, line and instrument preamplifier. The signal path uses only discrete components like resistors, capacitors and transistors. The in and output is transformer balanced, using two different transformers, each one optimized for its purpose. This is the way audio components were built before integrated circuits became available. The circuit used in the PRE 73 MKIII is similar to the preamp section