Both are desktop amplifiers, $1245 against $3600. This page puts them side by side on the only three things a maker can be held to — power, output impedance and noise — and then asks the question that actually matters: which headphones do they treat differently?
On raw power they are level: each reaches 100 dB on 567 of the 567 non-electrostatic models here.
| Specification | Violectric V222 | Violectric V550 Pro |
|---|---|---|
| Power into 32Ω | 2.7 W | 4.7 W |
| Power into 150Ω | 2.7 W | 2.9 W |
| Power into 300Ω | 1.8 W | 1.4 W |
| Power into 600Ω | 1.1 W | 740 mW |
| Output impedance | 0.25 Ω | 0.15 Ω |
| Output noise | 6.15 µV | 5.48 µV |
| Price | $1245 | $3600 |
| Headphones it reaches 100 dB on out of 567 | 567 | 567 |
A figure marked not published is missing from the maker’s own material, which is not the same as being good or bad. Where one of these two publishes a number and the other does not, the comparison on that axis cannot be made at all — and saying so is more useful than guessing.
On power they are interchangeable across this whole database: there is no headphone here that one reaches 100 dB on and the other does not.
23 headphones stay below the audible-hiss threshold on the Violectric V550 Pro but cross it on the Violectric V222 (64 Audio Volur, AFUL Performer 5, Audeze LCD-i4, 20 more).
567 of the 567 models here reach 100 dB on both. That is a power count and nothing more; whether either source suits a given headphone also depends on the two lines above.
Each has a page of its own with every power figure traced to what the maker published and a full headphone list: Violectric V222 and Violectric V550 Pro. Or put either against your own headphones in the source comparison tool.