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Audiobot Notes
Peak SPL

132.1 dB

This was approximated from the source output at 16 Ω

Damping factor 2.0 and 20.0
Sennheiser HD 25-SP II
Sennheiser HD 25-SP II
Impedance 60 Ω
Efficiency 101.8 dB SPL/mW
Frequency Response 30 - 16,000 Hz
Transducer Type Dynamic
Operating Principle Closed
Ear Coupling On-ear
Weight 115 g
Price History
Current $277.59
Highest $277.59
Lowest $165.48
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Status HD One
Burson Audio Soloist
Burson Audio Soloist
Output Impedance 3.0 Ω
30.0 Ω
Power Output 4,000 mW at 16 Ω
Frequency Range 0 - 50,000 Hz
Portable
Additional Notes
"No other headphone amp offers as much power with so few components in the signal path as the Soloist. Conventional headphone amplifier designs use IC op-amps in the signal path. Since each op-amp contains over 50 low-quality components, most of them not even required for audio playback, these packed-together chips distort the audio signal, it’s in their nature. The Soloist is perfectly tailored with a symmetrical current feedback circuit with only 21 components in the signal path explaining the wonderful sound."
Price History
Current $581.21
Highest $999.00
Lowest $581.21
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