Does the Schiit Magni Heretic drive the Grado SR80x?

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

Ample

The Schiit Magni Heretic drives the Grado SR80x with ample headroom (~29.1 dB headroom at 32 ohms; needs ~3.0 mW, delivers 2400 mW).

Headroom
29.1 dB
Required (110 dB SPL)
3.0 mW
Delivered (@ 32 Ω)
2400 mW
Required voltage
0.34 Vrms

Power Headroom

Headroom: 29.1 dB 0 · target 29.1 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 3.0 mW required to reach 110 dB SPL. Amp delivers 2400 mW at 32 Ω (+29.1 dB above target).

Grado SR80x Dynamic · on-ear
Impedance (rated) 32 Ω
Impedance (measured) Source: reference-audio-analyzer.pro/en/r… 38.8 Ω measured
Sensitivity (rated) 99.8 dB/mW
Sensitivity (measured) 105.3 dB/mW measured
Driver Dynamic
Spec basis Measured
Measured by Reference Audio Analyzer (https://reference-audio-analyzer.pro/en/report/hp/grado-sr80x.php) · Source ↗
Schiit Magni Heretic Desktop Ss · Single Ended
Output impedance manufacturer 0.2 Ω
Power @ 16 Ω 2800 mW
Power @ 32 Ω 2400 mW
Power @ 50 Ω 1600 mW
Power @ 300 Ω 410 mW
Power @ 600 Ω 215 mW
Power source Manufacturer
Manufacturer-rated: 2800/2400/1600/410/215 mW at 16/32/50/300/600 Ω. 16/32/300 confirmed from Schiit product page; 50/600 from original project fixture (step 1). Output impedance 0.2 Ω from Schiit spec. · Source ↗

Where to buy

Schiit Magni Heretic on Amazon ↗ Grado SR80x 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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