cdp tweaks

hi all,
has anyone tweaked a pioneer pd-s904 cdp, I have a heavily tweaked arcam alpha 7se at the minute and was thinking of getting a second hand player and having a go, any ideas would be most appreciated, many thanks leo
go to, that's where you'll get more of the DIY info.

Leo- Who did what to your 7SE? Cost? Time? Was going to buy sumthin' new. May mod my arcam instead. Thanks.