The Yamaha Premium EF6600DE portable generator runs $4,199 and kicks out 6,600 watts, has a noise level of 73.5 dB(A) and comes with a two year warranty.
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The EF6300iSDE portable generator ($4,099) has a noise level of 58 to 64 dB(A), which makes it as quiet (super quiet) as Honda and Cummings. The 6300 has a max output of 6300 watts and 5500 rated.
They say that continuous run time is 13.3 hours, but that is at 1/4 load and a bit misleading if you ask me; I'm guessing that at half load, you can expect about 5 hours.
Specs:

Yamaha Portable Generators
Type Brushless, Inverter
Maximum AC Output 6300 watts
Rated AC Output 5500 watts
Rated / Max AC Current 45.8 amps /52.5 amps @120V; 22.9 amps/26.3 amps @ 240V
Engine OHV, Air-Cooled, Four-Stroke, Single Cylinder
Displacement 357cc
Ignition System TCI: Transistor Controlled Ignition
Starting System Electric start w/automatic choke (optional wireless remote)
Overall Length 30.4 in
Overall Width 24.0 in
Overall Height 27.0 in
Dry Weight 200 lb
Fuel Tank Capacity 4.5 gal
Continuous Operation at 1/4 Rated Load 13.3 hr
Noise Level 58 ~ 64 dBA (If full power, wow! Was not stated?)
Warranty 2 Years Limited Warranty
Yamaha makes some fantastic products, but with such a small run time, you'll be filling up often and because the noise level is so great, you're going to pay extra. I also don't like the 2 year warranty. I would however, buy this or the Cummins model (see my review) before Honda.

US $1,331.10



I have researched the 2000 watts portable generator from Yamaha and customers give its good coverage. It is quiet and practical for small workshop/field sites. Also great for camping and other recreational activities.
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