Regular os agudos (só no cdx-m670, mdx-m690), Regular o balanço (fad) (só no cdx-m670, mdx-m690), Regular os agudos – Sony MDX-M690 RU User Manual
Page 150: Só no cdx-m670, mdx-m690), Regular o balanço (fad), Regular o volume frontal e traseiro, Só no cdx-m770)
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