SPL PQ Mastering Equalizer (Red) - Manual (Page 5)

4
Technical Aspects
120 Volt Technology
SPL‘s goal was to push analog signal processing to the limits. That‘s why we combined the
best possible components with a high-grade optimized circuit design.
We have been using the in-house developed 120-volt technology - the highest-ever ope-
rating voltage used for audio applications - in all our products from the Mastering series
for years. Some of the most highly respected Mastering studios today revolve around
SPL consoles and signal processors from our Mastering series (Bob Ludwigs Gateway
Mastering & DVD in the USA, Simon Heyworth‘s Super Audio Mastering in the UK, Galaxy
Studios in Belgium, and the legendary Wisseloord in the Netherlands, for instance).
The 120-volt technology is based on op-amps developed internally by SPL‘s co-founder
and Chief Developer Wolfgang Neumann. The IRON features the most advanced gene-
ration of these op-amps. They boast better tech specs thanks to the thermal behavior
optimization they underwent under the hands of Bastian Neu.
Ultimately, the supply voltage is key for the overall dynamic response of a processor. Vol-
tage is to an electrical circuit what cylinder capacity is to an internal combustion engine:
You can‘t replace cylinder capacity with anything else, except more cylinder capacity.