Short answer
Both are desktop amplifiers, $350 against $399.
The Schiit Jotunheim 2 reaches 100 dB on 567 of the 567 models here, the Lake People G103-S Mk II on 566.
| Specification | Lake People G103-S Mk II | Schiit Jotunheim 2 |
|---|---|---|
| Power into 32Ω | 1.0 W | 2.0 W |
| Power into 150Ω | 804 mW | 496 mW |
| Power into 300Ω | 580 mW | 330 mW |
| Power into 600Ω | 340 mW | 165 mW |
| Output impedance | 0.1 Ω | 0.1 Ω |
| Output noise | 6.15 µV | not published |
| Price | $350 | $399 |
| Headphones it reaches 100 dB on out of 567 | 566 | 567 |
Not published means the maker leaves it out, so that axis cannot be compared.
| Balanced | Lake People G103-S Mk II | Schiit Jotunheim 2 |
|---|---|---|
| Socket | no separate rating | XLR4 |
| Power into 32Ω | — | 6.0 W |
| Power into 300Ω | — | 1.2 W |
| Output impedance | — | 0.1 Ω |
| Output noise | — | not published |
| Headphones it reaches 100 dB on out of 567 | — | 567 |
Only the Schiit Jotunheim 2 has a separate balanced rating from its maker; through it, it reaches 100 dB on 567 of the 567 models here. The Lake People G103-S 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.
| Load | Lake People G103-S Mk II | Schiit Jotunheim 2 |
|---|---|---|
| 32 Ω | Published | Published |
| 150 Ω | Derived | Derived |
| 300 Ω | Published | Published |
| 600 Ω | Published | Published |
Both makers publish a power rating. Lake People G103-S Mk II publishes at 32 Ω, at 300 Ω and at 600 Ω; Schiit Jotunheim 2 at 32 Ω, at 300 Ω and at 600 Ω. The other rows are worked out from those.
The two publish at the same loads, which is the one case where the rows of this table can be read straight across.
1 headphone reaches 100 dB on the Schiit Jotunheim 2 but not on the Lake People G103-S Mk II — 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 HiFiMAN HE400se: Schiit Jotunheim 2 has +23 dB of headroom there against +20 dB. 3 dB is twice the power, which matters for peaks rather than for how loud the music sits.
The hiss columns are empty for Schiit Jotunheim 2 because that maker publishes no output noise figure.
| Headphone | Impedance | Needs | Lake People G103-S Mk II headroom | Schiit Jotunheim 2 headroom | Lake People G103-S Mk II hiss | Schiit Jotunheim 2 hiss |
|---|---|---|---|---|---|---|
| Shure SE846 | 9 Ω | 0.04 mW | +38 dB | +42 dB | 30 dB | not published |
| Campfire Audio Andromeda 2020 | 9 Ω | 4.0 mW | +18 dB | +22 dB | 10 dB | not published |
| Audeze LCD-2 Classic | 70 Ω | 0.79 mW | +32 dB | +31 dB | 8 dB | not published |
| Beyerdynamic DT 1990 Pro (250Ω) | 250 Ω | 0.63 mW | +30 dB | +28 dB | 4 dB | not published |
| HiFiMAN HE400se | 25 Ω | 7.9 mW | +20 dB | +23 dB | 3 dB | not published |
| Audio-Technica ATH-R70X | 470 Ω | 1.6 mW | +24 dB | +21 dB | -3 dB | not published |
| Sennheiser HD 600 | 300 Ω | 6.6 mW | +19 dB | +17 dB | -7 dB | not published |
| HiFiMAN Susvara | 60 Ω | 50 mW | +14 dB | +13 dB | -9 dB | not published |
The Schiit Jotunheim 2 costs $49 more than the Lake People G103-S Mk II. Out of the 567 models here, that difference buys 1 more model driven to 100 dB.
Nothing runs the other way: there is no axis here on which the cheaper of the two does better.
Only published figures count here; blank axes are counted separately.
Each in full: Lake People G103-S Mk II and Schiit Jotunheim 2.