AlgoRhythm Duet


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

Colors: Black or Silver


• 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

• < 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

Package Contents

– Cypher Labs AlgoRhythm Duet
– User Guide
– Mini to mini interconnect (1 meter)
– Cypher Labs straps to bundle devices for travel
– Switching 100v / 220v black micro USB AC charger, USA folding plug

One year Cypher Labs parts and Labor warranty

Product Manual

pdfAlgoRhythm Duet Product Manual