The incumbent against the challenger. Spec for spec, dollar for dollar, use case for use case.
Best for: established salons with dedicated 20a circuits, groomers who want proven power and don't mind noise or maintenance.
See current priceBest for: most groomers, mobile vans, older buildings, anyone tired of breaker trips and noise fatigue.
Check price →| Spec | Double K K9 II | Rover's Edge Alpha |
|---|---|---|
| Price (USD) | ~$799 | ~$505 |
| Price (CAD) | ~$1,080 | $695 |
| Amp draw | ~13.5a | ~11.5a |
| Needs 20a circuit? | Often yes | No |
| Noise at 1m | ~84 dB | ~76 dB |
| Motor type | Universal (brushes) | Brushless DC |
| Brush maintenance | Yes, periodic | No |
| Weight | ~17 lbs | ~11 lbs |
| Hose length | 8 ft, rigid | 3–10 ft extendable |
| Variable speed | Yes | Yes |
| Warranty | 1 year | 2 years |
| Made in | USA | Canada |
| CFM (approx) | High (~230+) | High (~230+) |
A standard North American outlet is 15a. The K9 II at ~13.5a leaves almost no headroom. Turn on lights, AC, or another dryer and the breaker trips. The Alpha at ~11.5a gives you room to breathe. In mobile grooming vans running off a generator or inverter, that margin is everything.
84 dB is borderline for an 8-hour shift without hearing protection. 76 dB is a meaningful improvement — less fatigue for you, less stress for noise-sensitive dogs. Over a career, that difference matters.
Universal motors use carbon brushes that wear out and need replacing. Brushless DC motors don't. The Alpha's motor is rated for longer life and runs cooler, which also means less risk of overheating during long groom days.
you work in an older salon, run a mobile van, groom noise-sensitive dogs, want less maintenance, or simply want K9-level power without the K9 price and breaker trips.
you have a dedicated 20a circuit, you prioritize brand history and resale value over noise/amps, and you don't mind periodic brush replacement.
Alpha, full stop. Lower amp draw, lighter weight, quieter operation, and a hose that retracts when not in use. The K9 II is a liability in a van.
The K9 II has a longer market history and a bigger parts ecosystem. If something breaks in year five, you can probably find a video and a part. The Alpha is newer, so long-term repairability is less proven. That said, Rover's Edge offers a 2-year warranty and Canadian-based support, which matches or beats K9's support experience for most buyers.
Winner for most groomers: Rover's Edge Alpha — Check current price · Use code SEAN10 for 5% off