Cypher Labs Duet Portable Headphone Amplifier

Cypher Labs

The AlgoRhythm Duet achieves true desktop quality in a portable headphone amplifier.

  • Michael Caplan of Elm City Music, says “The Duet has a deep and clean background. The sound is powerful, bassy, bold, authoritative and expansive – reference grade audio. My Ultrasone Pro’s never sounded so good!”

  • Fully balanced high power analog headphone amplifier
    High capacity lithium-polymer battery – 10-14 hours play time – fast re-charge
    Matches in size and character with the AlgoRhythm Solo –R and AlgoRhythm Solo –dB for the ultimate portable rig
    Designed and assembled in the USA
    The AlgoRhythm Duet features three gain settings, balanced input and output using a mini-4 pin connector and single ended 3.5mm input and output. Markings are laser etched on extruded aluminum for durability
    Volume gain settings optimized for all headphone types
    Single ended line-level analog output
    Balanced mini-4 pin input and output (never translated from single ended)
    Output optimized for all headphone types, including in-ear monitors and planar magnetic headphones
    The AlgoRhythm Duet is 100% analog and so does not utilize a PC driver

  • Frequency response in both balanced and unbalanced mode:
    5Hz-150kHz ±1dB
    Gain Settings:
    Low: -6dB
    Medium: +3.5dB
    High: +15dB
    Balanced output power with both channels driven:
    70mW into 32Ω
    100mW into 50Ω
    240mW into 300Ω
    120mW into 600Ω
    Unbalanced output power with both channels driven:
    70mW into 32Ω
    100mW into 50Ω
    240mW into 300Ω
    120mW into 600Ω
    Impedance: < 1Ω
    Power and Battery:
    Built in Rechargeable Lithium-18650 Battery
    Front Power on LED: Blue
    Back Charge Indicator LED: Charging-Red; Charged-Green
    Playtime: 10-14 hours
    Recharge Time: 3 hours with included micro USB wall power adapter