Golden Age - D2 MKII The class-A circuit used in

The class-A circuit used in the COMP-54 is similar to the one in the classic 2254 compressor that was designed in 1969

External power power supply to avoid interaction with the audio circuitry and the transformers

The switch to the right engages a filter that lowers a range centered around 5 kHz with a maximum of about 4 dB

The circuit used for the power supply is also similar except for adding a zener diode to assure the voltage and current stable

Golden Age - D2 MKII The class-A circuit used inThe D2 MKII is a high quality dynamic microphone with a full bodied sound and an excellent transient response. It has a consistent cardioid polar pattern for a low off axis coloration and a good rejection of unwanted sounds. The D2 MKII has a flat response with a mild lift in the upper midrange. 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