Sony’s SRS-U10 speakers work with any sort of line-in, so you can connect your PSP, MP3 player, or Sony Walkman to it to use as a desk-top or bed-side audio player. There’s also a PSP stand, which doesn’t get in the way of the controls on the PSP, something we’ve been seeing a lot of in various PSP speaker designs. No price or availability info yet.
https://gizmodo.com/nodus-psyclone-psp-speaker-dock-has-t-amp-inside-200790
SRS-U10, the Sony PSP compatible universal speaker [Akihabara News]
