Does the iFi Zen DAC V2 drive the AKG K240 Studio?

Computed from rated specifications · target SPL 110 dB · load 32 Ω

Adequate

The iFi Zen DAC V2 adequately drives the AKG K240 Studio with limited margin (~5.5 dB headroom at 32 ohms; needs ~79.4 mW, delivers 280 mW). Note: output impedance for this amp isn't reliably published, so the damping interaction into this 55 Ω load can't be assessed; treat low-impedance pairings with caution.

Headroom
5.5 dB
Required (110 dB SPL)
79.4 mW
Delivered (@ 32 Ω)
280 mW
Required voltage
2.09 Vrms

Power Headroom

Headroom: 5.5 dB 0 · target 5.5 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 79.4 mW required to reach 110 dB SPL. Amp delivers 280 mW at 32 Ω (+5.5 dB above target).

AKG K240 Studio Dynamic · over-ear
Impedance 55.0 Ω rated
Sensitivity 91.0 dB/mW rated
Driver Dynamic
Spec basis Rated
Rated: AKG official spec (55 Ω, 91 dB/mW at 1 mW). Note: AKG uses dB/V for most models but explicitly states 1 mW here. RAA has no page. · Source ↗
iFi Zen DAC V2 Dac Amp · Single Ended
Output impedance assumed Not published
Power @ 32 Ω 280 mW
Power @ 300 Ω 36 mW
Power @ 600 Ω 18 mW *est.
Power source Manufacturer low confidence
* 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.
iFi Zen DAC V2 SE output: 280 mW @ 32 Ω, 36 mW @ 300 Ω (iFi tech lowdown PDF and product page). Output impedance: conflicting sources (manufacturer PDF cites '≤100 Ω unbalanced' which may refer to RCA pre-out, not the headphone jack; likely <<1 Ω for headphone output but unconfirmed). Set null; damping check flagged as indeterminate. 600 Ω derived from 300 Ω. · Source ↗
Impedance — unknown output impedance

This amp's output impedance is not reliably published, so the damping interaction into this 55 Ω headphone cannot be assessed. Treat low-impedance pairings (below ~80 Ω) with caution.

Specification confidence: low

One or more amp specifications (power output or output impedance) are estimated rather than published by the manufacturer. Treat this pairing's verdict as approximate.

Where to buy

iFi Zen DAC V2 on Amazon ↗ AKG K240 Studio 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.

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Schiit Magni Heretic Ample 13.0 dB
Little Dot MkII Marginal 1.0 dB
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