QUOTE(Irishcoffee @ Dec 4 2014, 05:45 PM)
yea im making espresso
currently using delonghi ec155 , non pressurized basket , im using krups gvx2 grinder
i asked one of my friend which had gaggia mdf to grind the beans for me , its pretty much the same finest if compare to krups gvx2
i wondering if the grinder really helps to improve the espresso extraction?
Do you time your shots or weigh them? This is because grinding your beans fresh, with specific settings for the beans you're using will definitely affect the taste of your espresso. Then you have to check for channeling, tamping techniques etc.. but the most important component is the grinder. If you're pulling ristrettos or lungos.. you will notice that you can't skimp on a grinder. This is because grind consistency is very important.. it's a little notch from being too sour, or too bitter. In the end, it's really down to your taste buds
If you like what you're having, then why not? But if you have a Krups GVX2, and considering the Akira grinder, I would suggest you to keep your existing one. They will work in the same way, and I believe the Krups has 17 steps? If yes, it's better than the Akira, which only has 9.
Anyway, you can read some of the following pages regarding the importance of a grinder and how it affects your espresso:
http://coffeegeek.com/guides/howtobuyanesp...ine/getagrinderhttp://texascoffeeschool.com/blog/coffee-c...-brewing-setup/