Best "pseudo" multi channel from 2 ch sources

Short answer is none unless you've got several thousand dollars to spend.

If you are playing redbook cds mainly, the centre/rear channels will just be duplicates of the 2 main channels. I'd stick to a good 2 channel integrated unless you will be playing mostly multichannel sources.

You can always select an integrated amp that has 2 sets of speaker outputs, then run 4 speakers - 2 front and 2 rear, just make sure the speakers are reasonably easy to drive.

The only one I like is Trifield on the Meridian processors.

Meiwan wrote: If you are playing redbook cds mainly, the centre/rear channels will just be duplicates of the 2 main channels.

Not so. There are many systems that will extract ambiance information for surround and interpolate a center and these include the ubiquitous Dolby and dts processes. However, the OP is advised to try them before buying since they vary considerably in their capabilities and configurabilities.

Kal