Sony CDP-C435 - Manual (Page 29)

Memorizing a
(CDP-C535 only) e -
You can store a DSP mode, as well as DIRECT, for each disc. When you play a disc
with a DSP file, the specified DSP mode is automatically set.
Making a DSP File
Playing a disc with a DSP file
Each time the disc is piayed, the specified DSP mode is
automatically set.
To change a DSP file
Select a new DSP mode, then press DSP FILE. The new
DSP mode will be stored in the DSP fiie.