Does the Schiit Asgard 3 drive the Koss Porta Pro?

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

Ample

The Schiit Asgard 3 drives the Koss Porta Pro with ample headroom (~29.6 dB headroom at 50 ohms; needs ~2.8 mW, delivers 2500 mW).

Headroom
29.6 dB
Required (110 dB SPL)
2.8 mW
Delivered (@ 50 Ω)
2500 mW
Required voltage
0.45 Vrms

Power Headroom

Headroom: 29.6 dB 0 · target 29.6 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 2.8 mW required to reach 110 dB SPL. Amp delivers 2500 mW at 50 Ω (+29.6 dB above target).

Koss Porta Pro Dynamic · on-ear
Impedance (rated) 60 Ω
Impedance (measured) Source: reference-audio-analyzer.pro/en/r… 72.15 Ω measured
Sensitivity (rated) 101.0 dB/mW
Sensitivity (measured) 105.6 dB/mW measured
Driver Dynamic
Spec basis Measured
Measured by Reference Audio Analyzer (https://reference-audio-analyzer.pro/en/report/hp/koss-porta-pro.php) · Source ↗
Schiit Asgard 3 Desktop Ss · Single Ended
Output impedance manufacturer 0.2 Ω
Power @ 16 Ω 5000 mW
Power @ 32 Ω 3500 mW
Power @ 50 Ω 2500 mW
Power @ 300 Ω 600 mW
Power @ 600 Ω 300 mW
Power source Manufacturer
Schiit Asgard 3 manufacturer spec: 5000/3500/2500/600/300 mW at 16/32/50/300/600 Ω. Output impedance <0.2 Ω from spec. · Source ↗

Where to buy

Schiit Asgard 3 on Amazon ↗ Koss Porta 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.

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Little Dot MkII Ample 15.6 dB
Apple USB-C to 3.5mm Ample 10.5 dB

See all amplifiers for the Koss Porta Pro →

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Grado SR80x Ample 30.7 dB
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Beyerdynamic DT 770 Pro 250 Ample 12.2 dB
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See all headphones for the Schiit Asgard 3 →