Audio Calculators

Benchmark HPA4 Calculator

by Benchmark Media Systems November 16, 2022

Calculators dBm dBV Headphone Amplifier HPA4 SPL

Results update on input change.

+24 dBu at 0 dBFS, XLR Input (Benchmark DAC)

4 Vrms at 0 dBFS, XLR Input (Typical HiFi Balanced)

2 Vrms at 0 dBFS, RCA Input (Typical HiFi Unbalanced)

Enter HPA4 Volume Setting: dB

Value: dB SPL at 1 mW dB SPL at 1 Vrms

Enter Headphone Impedance: Ohms

Amplifier Output Power: mW (at peak SPL)

SPL from single loudspeaker: dBm (dB relative to 1 mW)

Relative Output Level: dBV (dB relative to 1 Vrms)

Headphone Peak SPL: dB SPL

Amplifier Headroom: dB (at peak SPL)

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