The Miller Spectrum 625 X-TREME rates 3.6 among up to 45 A plasma cutters; the Miller Spectrum 875 rates 3.2 among over 45 A ones. The Miller Spectrum 625 X-TREME costs $1,409 less ($2,508 vs $3,917).
A light, dual voltage Miller cutter for shops and job sites that cut up to 5/8 in steel day after day. Worth it for buyers who value Miller build and dealer service; hobby users can pay much less.
Amazon $2,917.20 Cyberweld $2,508A 60 A shop cutter for farms and fabricators who cut thick plate often and want Miller build and service. Home users who cut mostly sheet and 1/4 in steel do not need this much machine.
Cyberweld $3,917Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
These two sit in different size classes (up to 45 A and over 45 A), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Miller Spectrum 625 X-TREME | Miller Spectrum 875 |
|---|---|---|
| Overall rating | 3.6/5 | 3.2/5 |
| Value 30% | 23 $4,012.80 per inch of rated cut ($2,508, 5/8 in) | 19 $4,476.57 per inch of rated cut ($3,917, 7/8 in) |
| Cut 20% | 75 5/8 in rated cut on mild steel | 50 7/8 in rated cut on mild steel |
| Duty cycle 15% | 100 60% at full output (40 A) | 75 50% at full output (60 A) |
| Pilot arc 10% | 100 pilot arc | 100 pilot arc |
| Warranty 25% | 50 3-year warranty on the machine | 50 3-year warranty on the machine |
| Miller Spectrum 625 X-TREME | Miller Spectrum 875 | |
|---|---|---|
| Cutting | ||
| Input voltage | 120/240 V | 240 V |
| Maximum output | 40 A | 60 A |
| Rated cut, mild steel | 5/8 in | 7/8 in |
| Sever cut, mild steel | 7/8 in | 1 1/4 in |
| Rated duty cycle | 60% at 40 A, 40 °C | 50% at 60 A, 40 °C |
| Pilot arc | Yes | Yes |
| Arc start | - | Blowback |
| Air and build | ||
| Air supply | 6 cfm, 90 psi | 6.8 cfm, 90 psi |
| Weight | 21 lb | 48 lb |
| Warranty | 3 years | 3 years |
| Released | 2011-11 | - |
