Alloy vs Plastic Chute. The essential difference is that the chute is alloy on those units. That eliminates the possible stone-damage problem. Adjusting the skid shoes is great but even snow nicely above the earth can have embedded gravel. That may happen, for example, should you drive on the snow before clearing it off the driveway.
Chute Deflector. The chute deflector height is flexible, also, which affects the throw. Being able to vary the angle indicates the ability to put the snow where you would like. That's made even simpler in this instance since there's a simple-to-function handle on the A models. To the routine show you must fix it by hand. Not rough, but harder.
Distinct Tire Treads. The other difference between both series is more challenging to evaluate. The An units' tires come having a somewhat dissimilar tread pattern. How that changes actual performance depends on numerous variables. It Is tough to make any kind of general statement. For many, it will be a helpful advancement; for others it will make no difference at all.
Sorry to be this obscure but, simply to review a number of variables... In the event your snow tends to be really dry the design makes very little difference. If it's hard packed, the tread pattern will also have little effect. About the flip side, if you're grinding your way through wet, slushy, or polar snow (or a mixture of them), it could matter a lot.
Outline
There are a couple of caveats to ponder when choosing the Power Smart DB7651 series snow blower from Amerisun, no matter which model you investigate.
One is that, despite the American-sounding name, all these are made in China. That's not a guarantee of lesser quality. Quite the opposite, many machines made there are the equivalent today in their U.S. equivalents. But it's a rather new company plus they don't yet possess a nationwide servicing system here.
