Short answer
Both are desktop amplifiers, $629 against $699.
On raw power they are level: each reaches 100 dB on 567 of the 567 non-electrostatic models here.
| Specification | Lake People G111 Mk II | Singxer SA-1 |
|---|---|---|
| Power into 32Ω | 1.4 W | 5.5 W |
| Power into 150Ω | 1.4 W | 1.6 W |
| Power into 300Ω | 1.1 W | 785 mW |
| Power into 600Ω | 600 mW | 380 mW |
| Output impedance | 0.125 Ω | 1.4 Ω |
| Output noise | 6.9 µV | 0.3 µV |
| Price | $629 | $699 |
| Headphones it reaches 100 dB on out of 567 | 567 | 567 |
| Load | Lake People G111 Mk II | Singxer SA-1 |
|---|---|---|
| 32 Ω | Published | Published |
| 150 Ω | Derived | Derived |
| 300 Ω | Published | Derived |
| 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; Singxer SA-1 at 32 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 300 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.
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.
51 headphones are left alone by the Lake People G111 Mk II under the one-eighth rule but coloured by the Singxer SA-1 (64 Audio Aspire 1, 64 Audio Fourte, 64 Audio Nio, 48 more).
116 headphones stay below the audible-hiss threshold on the Singxer SA-1 but cross it on the Lake People G111 Mk II (64 Audio Aspire 1, 64 Audio Fourte, 64 Audio Nio, 113 more).
567 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: Singxer SA-1 has +32 dB of headroom there against +20 dB. 11 dB is about 13 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 | Singxer SA-1 headroom | Lake People G111 Mk II hiss | Singxer SA-1 hiss |
|---|---|---|---|---|---|---|
| Shure SE846 | 9 Ω | 0.04 mW | +40 dB | +52 dB damping | 31 dB | 4 dB |
| Campfire Audio Andromeda 2020 | 9 Ω | 4.0 mW | +20 dB | +32 dB damping | 11 dB | -16 dB |
| Audeze LCD-2 Classic | 70 Ω | 0.79 mW | +34 dB | +36 dB | 9 dB | -18 dB |
| Beyerdynamic DT 1990 Pro (250Ω) | 250 Ω | 0.63 mW | +32 dB | +32 dB | 5 dB | -22 dB |
| HiFiMAN HE400se | 25 Ω | 7.9 mW | +22 dB | +29 dB | 4 dB | -23 dB |
| Audio-Technica ATH-R70X | 470 Ω | 1.6 mW | +27 dB | +25 dB | -2 dB | -29 dB |
| Sennheiser HD 600 | 300 Ω | 6.6 mW | +22 dB | +21 dB | -6 dB | -33 dB |
| HiFiMAN Susvara | 60 Ω | 50 mW | +16 dB | +18 dB | -8 dB | -35 dB |
The Singxer SA-1 costs $70 more than the Lake People G111 Mk II. Out of the 567 models here, that difference buys 116 more models kept below the audible-hiss threshold.
It does not run one way only: the cheaper Lake People G111 Mk II leaves 51 models alone under the one-eighth rule that the Singxer SA-1 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 Singxer SA-1.