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Helios Professional Audio Limited

Pro-audio equipment in the Helios tradition

Helios products

Type 69 Passive Equaliser

The original Type 69 was produced in a number of different versions - the early ones being developed while Dick was at Olympic Studios and the later versions for Island and others. The principal differences related to the transformer type and whether germanium or silicon transistors were used. Since Helios was a custom console manufacturer, these differences were quite normal.

Type 78 Active Equaliser

This was based on the last consoles delivered in 1978/79, offering active equalisation with all parameters continuously variable.