Pre-73 Mk III Do experiment with mic placement

Do experiment with mic placement and with the filters

5:1 dual bobbin transformer by a reputed transformer factory

The meter can show output level or gain reduction

This filter is active in about the same frequency range as the presence peak and therefore lowers it when it is engaged

The Golden Age Premier GA-47 is the result of a lot of hard work and real world testing and the MKII version has been further refined

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