zapco DAII-SL, Owner'S Manual

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SEQ
In 1977 Zapco created a signal processing legend with the full-scale
production of the PEQ Preamp-Equalizer. The PEQ was the world’s first
audiophile preamp for the car. The PEQ provided dual 9 band EQ’s with 18
slide pots for ease of operation. It was also the first 12-volt preamp to offer
THD and noise specifications worthy of high quality home gear, and the first
to offer high voltage/low impedance outputs, to avoid signal loss in long
cable runs.
The PEQ, which had come to be known as the” ZAP Board”, was
updated in the early 90’s to provide even better performance, with improved
op-amps, and even lower noise components.
The new model received a new name and became the SEQ, but it
retained all the looks and features and die cast body that built the legend,
and it’s popularity continued to grow.
The SEQ remains a top seller, after 25 years in the lineup.
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