[renaudg]

Paula is exactly the same across the whole Amiga range AFAIK, so no difference when it comes to sound.

Not sure how much resources Octamed requires though.

An A1200 with CF hard disk + ACA board seems like a safe bet

[vardump]

There are differences in audio low pass filters between different Amiga models. It can't be ever entirely disabled. I think Amiga 1200 filter affects the sound the least.

IIRC, AGA chipset (Amiga 1200, 4000) is also capable of up to ~56 kHz sample rate.

OCS/ECS is just up to 28 kHz.

[draven]

IIRC (that was a long time ago) I could use only 8 tracks on my A600 because I only had a meg of memory. A friend had extended his A600 memory to 2MB and I think he could get 6 tracks.