Does the Schiit Fulla 4 drive the AKG K712 Pro?

Computed from rated specifications · target SPL 110 dB · load 50 Ω

Adequate

The Schiit Fulla 4 adequately drives the AKG K712 Pro with limited margin (~4.7 dB headroom at 50 ohms; needs ~51.1 mW, delivers 150 mW).

Headroom
4.7 dB
Required (110 dB SPL)
51.1 mW
Delivered (@ 50 Ω)
150 mW
Required voltage
1.78 Vrms

Power Headroom

Headroom: 4.7 dB 0 · target 4.7 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 51.1 mW required to reach 110 dB SPL. Amp delivers 150 mW at 50 Ω (+4.7 dB above target).

AKG K712 Pro Dynamic · over-ear
Impedance 62.0 Ω rated
Sensitivity 92.92 dB/mW rated
Driver Dynamic
Spec basis Rated
Rated: AKG official spec (62 Ω, 105 dB/V). RAA has no separate K712 Pro page. · Source ↗
Schiit Fulla 4 Dac Amp · Single Ended
Output impedance manufacturer 0.5 Ω
Power @ 16 Ω 300 mW
Power @ 32 Ω 200 mW
Power @ 50 Ω 150 mW
Power @ 300 Ω 40 mW
Power @ 600 Ω 20 mW *est.
Power source Manufacturer
* Loads marked "est." are derived from the published voltage ceiling at a lower-impedance load (V = √(P·R) → P_higher = V²/R_higher). All derivations are upward only.
Schiit Fulla 4 manufacturer spec: 300/200/150/40 mW at 16/32/50/300 Ω. NOTE: prior project fixture used 400/300/220/40 — those figures match the Fulla 3 or an earlier revision; updated to Fulla 4 (current product). Output impedance from Schiit spec. · Source ↗

Where to buy

Schiit Fulla 4 on Amazon ↗ AKG K712 Pro on Amazon ↗

Disclosure: links above are Amazon affiliate links. As an Amazon Associate this site earns from qualifying purchases — at no extra cost to you. Affiliate commissions do not influence verdicts; all analysis is computed independently from the data.

AmplifierHeadroom
Schiit Lyr 3 Ample 20.7 dB
JDS Labs Atom Amp 2 Ample 17.2 dB
Topping DX3 Pro+ Ample 15.5 dB
Schiit Magni Heretic Ample 15.0 dB
Little Dot MkII Marginal 2.9 dB
Apple USB-C to 3.5mm Insufficient -2.2 dB

See all amplifiers for the AKG K712 Pro →

HeadphoneHeadroom
Grado SR80x Ample 18.3 dB
AKG K371 Ample 17.8 dB
Beyerdynamic DT 770 Pro 80 Adequate 8.0 dB
HiFiMan Arya Adequate 8.0 dB
Beyerdynamic DT 770 Pro 250 Marginal 0.5 dB
Beyerdynamic DT 990 Pro Insufficient -0.6 dB

See all headphones for the Schiit Fulla 4 →