Cayin C9: Dual Nutube, Fully discrete Fully Balanced Class A/AB Portable Headphone Amplifier
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Fully balanced, fully discrete, 4-channels high-fidelity headphone amplifier delivers up to 4,100mW (at 16Ω) or 2600mW (at 32Ω) per channel.
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Select between Vacuum Tube and Solid State timber on both balanced and single-end inputs.
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The tube timber circuit is designed around a pair of KORG Nutube vacuum tubes.
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Switch between Pure Class A and Class AB amplification modes.
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Dual input mode: regular LINE input mode and PRE-amp input mode (or known as pure power amplifier mode).
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Supports 3.5mm SE and 4.4mm BAL for both input and output, the amplifier will also optimize BAL to SE or vice versa.
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4-channels ALPS potentiometer with a pair of stereo electronic volume.
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Removable battery module with 4x user replaceable Sony18650 rechargeable lithium batteries.