Short answer
Both are desktop amplifiers, $629 against $600.
The Lake People G111 Mk II reaches 100 dB on 567 of the 567 models here, the Soncoz SGA1 on 566.
| Specification | Lake People G111 Mk II | Soncoz SGA1 |
|---|---|---|
| Power into 32Ω | 1.4 W | 407 mW |
| Power into 150Ω | 1.4 W | 207 mW |
| Power into 300Ω | 1.1 W | 210 mW |
| Power into 600Ω | 600 mW | 105 mW |
| Output impedance | 0.125 Ω | 0.1 Ω |
| Output noise | 6.9 µV | 1.8 µV |
| Price | $629 | $600 |
| Headphones it reaches 100 dB on out of 567 | 567 | 566 |
| Balanced | Lake People G111 Mk II | 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 Lake People G111 Mk II 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 | Lake People G111 Mk II | Soncoz SGA1 |
|---|---|---|
| 32 Ω | Published | Derived |
| 150 Ω | Derived | Derived |
| 300 Ω | Published | Published |
| 600 Ω | Published | Published |
Both makers publish a power rating. Lake People G111 Mk II publishes at 32 Ω, at 300 Ω and at 600 Ω; Soncoz SGA1 at 300 Ω and at 600 Ω. The other rows are worked out from those.
So the two columns are not equally firm row by row: at 32 Ω only the Lake People G111 Mk II figure is the maker’s own. On those rows the derived number is the one to doubt first.
1 headphone reaches 100 dB on the Lake People G111 Mk II but not on the Soncoz SGA1 — Symphonium Titan.
114 headphones stay below the audible-hiss threshold on the Soncoz SGA1 but cross it on the Lake People G111 Mk II (64 Audio Aspire 1, 64 Audio Fourte, 64 Audio Nio, 111 more).
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 Audeze LCD-2 Classic: Lake People G111 Mk II has +34 dB of headroom there against +25 dB. 8 dB is about 7 times the power, which matters for peaks rather than for how loud the music sits.
Hiss below about 20 dB SPL is inaudible in a quiet room.
| Headphone | Impedance | Needs | Lake People G111 Mk II headroom | Soncoz SGA1 headroom | Lake People G111 Mk II hiss | Soncoz SGA1 hiss |
|---|---|---|---|---|---|---|
| Shure SE846 | 9 Ω | 0.04 mW | +40 dB | +35 dB | 31 dB | 20 dB |
| Campfire Audio Andromeda 2020 | 9 Ω | 4.0 mW | +20 dB | +15 dB | 11 dB | -0 dB |
| Audeze LCD-2 Classic | 70 Ω | 0.79 mW | +34 dB | +25 dB | 9 dB | -2 dB |
| Beyerdynamic DT 1990 Pro (250Ω) | 250 Ω | 0.63 mW | +32 dB | +25 dB | 5 dB | -7 dB |
| HiFiMAN HE400se | 25 Ω | 7.9 mW | +22 dB | +16 dB | 4 dB | -8 dB |
| Audio-Technica ATH-R70X | 470 Ω | 1.6 mW | +27 dB | +19 dB | -2 dB | -14 dB |
| Sennheiser HD 600 | 300 Ω | 6.6 mW | +22 dB | +15 dB | -6 dB | -18 dB |
| HiFiMAN Susvara | 60 Ω | 50 mW | +16 dB | +8 dB | -8 dB | -20 dB |
The Lake People G111 Mk II costs $29 more than the Soncoz SGA1. Out of the 567 models here, that difference buys 1 more model driven to 100 dB.
It does not run one way only: the cheaper Soncoz SGA1 keeps 114 models below the audible-hiss threshold that the Lake People G111 Mk II does not, which is the part worth checking against your own headphones before paying the difference.
Only published figures count here; blank axes are counted separately.
Each in full: Lake People G111 Mk II and Soncoz SGA1.