Best DAC/amp for the HiFiMan Sundara
The HiFiMan Sundara is a 37Ω open-back pair. To hit clean 110 dB transient peaks — the headroom that keeps footsteps and gunfire punchy, not just loud — it needs about 39.8 mW into that load. The pick that does it most affordably is the Schiit Magni Unity.
What the Sundara needs
| Spec | Value | Why it matters |
|---|---|---|
| Impedance | 37 Ω | Easy-ish load, but damping still matters |
| Sensitivity | 94 dB/mW | How loud per unit power |
| Power for 110 dB peaks | ~39.8 mW | Transient headroom for positional cues |
| Amp output impedance | ≤ 5 Ω ideal | The 8:1 damping rule — keeps the tuning flat |
Sound character — footsteps, general use & music
| Axis | Grade | What it means |
|---|---|---|
| Footsteps (positional) | 4/5 | The ONLY competitive axis — and it saturates: any clean open-back clears the bar, so more above baseline buys little advantage. |
| General use | 4/5 | All-round daily versatility — comfort/preference, not a competitive edge. |
| Music | 5/5 | Tonal enjoyment — preference, never advantage. |
open planar, clean mids; good stage, imaging needs power (Graded 1–5 relative to our catalog; sourced from measurement/review consensus.)
DAC/amps ranked for the Sundara
| DAC / Amp | Power @ 37Ω | Headroom | Damping | Verdict |
|---|---|---|---|---|
| Schiit Magni Unity | 2230 mW | +17 dB | 370:1 | Drives it comfortably |
| JDS Labs Atom Amp 2 | 2253 mW | +18 dB | 53:1 | Drives it comfortably |
| FiiO K11 | 1252 mW | +15 dB | 12:1 | Drives it comfortably |
| FiiO K5 Pro ESS | 1286 mW | +15 dB | 31:1 | Drives it comfortably |
| Topping L30 II | 2269 mW | +18 dB | 370:1 | Drives it comfortably |
| Creative Sound Blaster G6 | 127 mW | +5 dB | 37:1 | Drives it comfortably |
| Topping DX3 Pro+ | 1538 mW | +16 dB | 370:1 | Drives it comfortably |
| FiiO K7 | 1060 mW | +14 dB | 37:1 | Drives it comfortably |
| Apple USB-C 3.5mm dongle | 26 mW | -2 dB | 41:1 | Underpowered |
"Headroom" is power available vs the ~39.8 mW needed for 110 dB peaks (more = cleaner transients). "Damping" is the headphone impedance ÷ amp output impedance — at least 8:1 keeps the frequency response flat. Specs are sourced; the target SPL and 8:1 rule are the declared model.
The pick: Schiit Magni Unity
For the HiFiMan Sundara, the Schiit Magni Unity delivers ~2230 mW into 37Ω (+17 dB of headroom) at a 370:1 damping ratio — clean, loud, and tonally neutral. It's the most cost-effective amp here that drives these without compromise.
Specs are sourced (manufacturer sheets + RTINGS / Audio Science Review, each with a verified date in our catalog). Buy links are affiliate links to your regional store — AimBench may earn a commission at no cost to you.