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Twenty 2.1 Bluetooth Receiver for iPhone and Android by Griffin Technology

Beautiful audio. Effortlessly.

Twenty is a digital amplifier for your speakers that receives Bluetooth or optical audio streaming from your phone, tablet or computer.

Setting up Twenty is a snap. Connect your speakers to Twenty, pair your phone or tablet to Twenty, and hit Play. Or, use the included optical TOSLINK cable to physically connect your AirPort Express or Apple TV, game console or TV for clear optical audio. For extra low-end, Twenty has a Sub-out to add your existing powered subwoofer. The aluminum volume knob is weighted for smooth and accurate volume adjustment.

Amplifier
Class D Stereo Amplifier: TI PurePath
Input: S/PDIF optical, TOSLINK connector and 3.5 mm adapter (included)
Outputs: left & right channel connectors; RCA subwoofer connector
Sensitivity: -9.4 dBFS for 20 watts (volume control set to max)
AC Power: 100 to 240 VAC @ 50/60 Hz

Bluetooth Wireless Audio
Bluetooth Specification Version: Bluetooth v3.0 + EDR
Output Format: S/PDIF digital stream
Supported Digital Audio Codecs: AAC, aptX
Range: 10 meters

Speaker Output
Power: 20 watts per channel into 8 ohms @ 0.08% THD, both channels driven
Frequency response: 20 Hz – 20 kHz, +0, -0.34 dB
Signal-to-Noise ratio: 95 dB
Crosstalk: -71 dB

Subwoofer Output
Auto-switching when powered subwoofer is detected
Output Level: line-level output (1 V RMS nominal; 2 V RMS max.)
High-pass filter: 80 Hz 4TH order Linkwitz-Riley applied to L+R channels
Low-pass filter: 80 Hz 4TH order Linkwitz-Riley applied to subwoofer output

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