If you have the 650 tube I would have to agree with you. Most people are going to use this the way it comes with the 490 tube as I doubt a lot of people are going to want to spend the extra with the price tag this already has on it.
With a 650 in the zna I can deff see how the zna would still be better down to .6 or .7 ohm but in an out of box state on a 490 my personal opinion is about .9 ohms.
I personally havent touched my mech in quite a while so by all means the ZNA is definitely my favorite device just thought I'd share my 2c on how I see it
Sent from my SAMSUNG-SM-N900A using Tapatalk
With a 650 in the zna I can deff see how the zna would still be better down to .6 or .7 ohm but in an out of box state on a 490 my personal opinion is about .9 ohms.
I personally havent touched my mech in quite a while so by all means the ZNA is definitely my favorite device just thought I'd share my 2c on how I see it
Sent from my SAMSUNG-SM-N900A using Tapatalk