Short answer
Both are desktop amplifiers, both at $600.
The iFi iCAN Pro reaches 100 dB on 567 of the 567 models here, the Soncoz SGA1 on 566.
| Specification | iFi iCAN Pro | Soncoz SGA1 |
|---|---|---|
| Power into 32Ω | 4.0 W | 407 mW |
| Power into 150Ω | 1.2 W | 207 mW |
| Power into 300Ω | 600 mW | 210 mW |
| Power into 600Ω | 300 mW | 105 mW |
| Output impedance | 0.5 Ω unverified | 0.1 Ω |
| Output noise | 25 µV unverified | 1.8 µV |
| Price | $600 | $600 |
| Headphones it reaches 100 dB on out of 567 | 567 | 566 |
| Balanced | iFi iCAN Pro | Soncoz SGA1 |
|---|---|---|
| Socket | no separate rating | 4-Pin XLR + 4.4mm |
| Power into 32Ω | — | 407 mW derived |
| Power into 300Ω | — | 840 mW |
| Output impedance | — | 0.05 Ω |
| Output noise | — | 3.6 µV |
| Headphones it reaches 100 dB on out of 567 | — | 566 |
Only the Soncoz SGA1 has a separate balanced rating from its maker; through it, it reaches 100 dB on 566 of the 567 models here. The iFi iCAN Pro may still have a balanced socket — its spec sheet simply gives no figure for one, so there is nothing to put beside it. Derived figures are worked out from the loads the maker did publish.
| Load | iFi iCAN Pro | Soncoz SGA1 |
|---|---|---|
| 32 Ω | Unverified | Derived |
| 150 Ω | Unverified | Derived |
| 300 Ω | Unverified | Published |
| 600 Ω | Unverified | Published |
iFi iCAN Pro publishes no electrical specification at all. That is true of 10 of the 280 sources here, and the figures in that column come from independent measurement rather than from a maker document — which is not worse, but it is not the same thing, and it cannot be checked against anything the maker will stand behind.
The Soncoz SGA1 column does stand on a power rating its maker printed, at one of these four loads at least. Reading the two straight across sets one kind of claim against another, and nobody has written down the conditions of both side by side.
1 headphone reaches 100 dB on the iFi iCAN Pro but not on the Soncoz SGA1 — Symphonium Titan.
566 of the 567 models here reach 100 dB on both.
Headroom is at a 100 dB SPL peak.
The widest gap on the list is the Campfire Audio Andromeda 2020: iFi iCAN Pro has +25 dB of headroom there against +15 dB. 10 dB is about 9.8 times the power, which matters for peaks rather than for how loud the music sits.
The hiss columns are empty for iFi iCAN Pro because that maker publishes no output noise figure.
| Headphone | Impedance | Needs | iFi iCAN Pro headroom | Soncoz SGA1 headroom | iFi iCAN Pro hiss | Soncoz SGA1 hiss |
|---|---|---|---|---|---|---|
| Shure SE846 | 9 Ω | 0.04 mW | +45 dB | +35 dB | not published | 20 dB |
| Campfire Audio Andromeda 2020 | 9 Ω | 4.0 mW | +25 dB | +15 dB | not published | -0 dB |
| Audeze LCD-2 Classic | 70 Ω | 0.79 mW | +34 dB | +25 dB | not published | -2 dB |
| Beyerdynamic DT 1990 Pro (250Ω) | 250 Ω | 0.63 mW | +31 dB | +25 dB | not published | -7 dB |
| HiFiMAN HE400se | 25 Ω | 7.9 mW | +26 dB | +16 dB | not published | -8 dB |
| Audio-Technica ATH-R70X | 470 Ω | 1.6 mW | +24 dB | +19 dB | not published | -14 dB |
| Sennheiser HD 600 | 300 Ω | 6.6 mW | +20 dB | +15 dB | not published | -18 dB |
| HiFiMAN Susvara | 60 Ω | 50 mW | +17 dB | +8 dB | not published | -20 dB |
These two cost the same, $600, so price settles nothing. Out of the 567 models here, the iFi iCAN Pro drives one model to 100 dB — and on the other side there is no such advantage at all.
Only published figures count here; blank axes are counted separately.
Each has a page of its own with a full headphone list and the provenance of every figure — worth opening here, because iFi iCAN Pro has published no electrical specification at all and everything above comes from independent measurement: iFi iCAN Pro and Soncoz SGA1.