AHP AlphaTIG 203Xi
#2 in AC/DC TIGFull review
A complete, hard working AC/DC TIG for the home fabricator who welds aluminum often. Its duty cycle beats most machines near its price.
Amazon $689 AHP $670$670
The AHP AlphaTIG 203Xi rates 4.2 among AC/DC TIG TIG or stick welders; the ArcCaptain TIG200P DC rates 3.7 among DC TIG ones. The ArcCaptain TIG200P DC costs $440.01 less ($229.99 vs $670).
ArcCaptain TIG200P DC
#5 in DC TIGFull review
A feature packed budget DC TIG for steel and stainless hobby work. Buy elsewhere if a stated duty cycle matters to you.
Amazon $229.99$229.99
Prices 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.
Scores side by side
These two sit in different process classes (AC/DC TIG and DC TIG), and each is scored against the reference points for its own class, so a rating says how well each does among its own process peers. How we rank explains each factor.
| Factor weight | AHP AlphaTIG 203Xi | ArcCaptain TIG200P DC |
|---|---|---|
| Overall rating | 4.2/5 | 3.7/5 |
| Value 30% | 68 $3.35 per amp ($670, 200 A maximum) | 92 $1.15 per amp ($229.99, 200 A maximum) |
| Duty cycle 20% | 100 60% at full output (200 A) | 50 duty cycle not published (neutral score used) |
| Features 25% | 100 high-frequency start, pulse, foot pedal in the box, dual voltage | 75 high-frequency start, pulse, dual voltage |
| Warranty 25% | 50 3-year warranty on the machine | 25 2-year warranty on the machine |
Specifications
| AHP AlphaTIG 203Xi | ArcCaptain TIG200P DC | |
|---|---|---|
| Output | ||
| Processes | AC/DC TIG, stick | DC TIG, stick |
| Maximum output | 200 A | 200 A |
| Maximum on 120 V | 150 A | - |
| Duty cycle | 60% at 200 A | - |
| Duty cycle ambient | 40 °C | - |
| Input | 120 V and 240 V | 120 V and 240 V |
| Features | ||
| Pulse | Yes | Yes |
| Foot pedal in the box | Yes | No |
| TIG torch in the box | Yes | - |
| Voltage reduction device | - | Yes |
| Weight | 40 lb | 10.2 lb |
| Warranty | 3 years | 2 years |