yes, I've found it most useful.

You can 'create' fictional loudspeakers by entering their parameters, crossover types etc and then calculate room effects based on the speaker.

There is a library of existing speakers to pick from, but greater creativity is there if you need it.

Melorib - it's definately a lot more advanced than the shareware version, which is a very limited bit of software.

Anyway, it's one 'tweak' (if you like) that I find universally educational and informative. Love it.

There is an assumption (well I assumed at least) that having messed about with many listening positions in a living room I've had for years, I'd achieved a relative optimal by trial and error.

I was clearly very wrong, having tried computer calculated results, a much cleaner less 'lumpy' response could be seen.

David - gosh, I've tried so much stuff, really..

One of my favourites is a change of the 'free' volume knob on a pre-amp.

Replacing with a high quality attenuator (tastes are personal things), gave a clear and very immediately obvious improvement. Clearly a lot greater than the other bits/bobs I've mentioned.

Another, changing the caps in loudspeakers gave a great result, more-so than changing them elsewhere in amplifiers/cd players etc.

My valve Dac was relatively inexpensive, and holds its own against CD players costing a few thousand. In fact I prefer it to most. Just a taste preference this one, as I find CD often sounds edgy to me, especially when I've been listening to LP's through my EAR 834p.

..having 'no hifi / amp / speakers ' right now, I'm making myself very sad