Zoom M4 MicTrak - Dual A;D Converter Circuit

Dual A/D converter circuit overview
For each input circuit, the M4 has two A/D converters with different input gains. This design enables
high-quality audio recording without the need to adjust gain settings, a step that normally had been
indispensable.
Providing amazing dynamic range
By combining two A/D converters, a wide dynamic range not possible with a single A/D converter has been
realized.
High-gain
AD converter
Low-gain
AD converter
AD converter
switches in
response to
input level
・Airplane
・Nearby thunder
・Train passing on tracks overhead
・Inside train
・Shouting
・Grand piano
・Noisy street
・Chimes
・Ordinary conversation
・Whispering
・Quiet library
・Late night in suburb
Wide dynamic range covered
by two AD converters
Input gain adjusted to
desired recording volume
Dual AD converters
Conventional equipment
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