arthurchoice,the Alpha 10 integrated will definitely be a huge improvement over your Alpha 8. It is much more powerful than the Alpha 8. The result will be improved dynamics across the music spectrum with noticeably better bass control and highs. You won't be disappointed if you consider upgrading to this amp.
However do bear in mind that there will be better amps out there that will give a better(or different?) sound. If you like the Alpha 8, you won't go wrong with the 10. Anyway if you have the budget, I would recommend the Classe CAP-151(over the Alpha 10) to partner with your N805.
As for your system, it is obvious that your speakers are the single strongest link and both your amp and source the weakest. I still can't believe you're using them to drive your wonderful speakers! You should really get better electronics to do some justice to the N805.
Whatever your decision, good luck.
However do bear in mind that there will be better amps out there that will give a better(or different?) sound. If you like the Alpha 8, you won't go wrong with the 10. Anyway if you have the budget, I would recommend the Classe CAP-151(over the Alpha 10) to partner with your N805.
As for your system, it is obvious that your speakers are the single strongest link and both your amp and source the weakest. I still can't believe you're using them to drive your wonderful speakers! You should really get better electronics to do some justice to the N805.
Whatever your decision, good luck.