Alfatron TPA33

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The ALF-TPA33 is an audio extender set including a transmitter and receiver. It is designed to extend the Stereo audio signal up to 170m / 557 feet, and the TOSLINK, COAX audio signal up to 290m / 951 feet via CATx cable.


  • Three audio inputs can be switched: TOSLINK/COAX/Stereo.
  • Three audio synchronous outputs: TOSLINK, COAX & RCA (L+R).
  • The transmitter is powered by the receiver’s 12VDC PoC technology.
  • The transmission distance of Stereo audio signal can up to 170m/557 feet over a single CATx cable, and the TOSLINK, COAX audio signal up to 290m/951 feet.


Transmitter  Receiver 
Input  TOSLINK, COAX or AUDIO  Input  1 TP IN 
Output  1 TP OUT  Output  TOSLINK, COAX & RCA (L+R) 
Audio Format  TOSLINK & COAX: PCM/Dobly/DTS; 

AUDIO: Stereo 

Sound Channel  TOSLINK & COAX: 2.0-7.1 
Frequency Response  20 Hz to 20 kHz, ±3 dB 
Sample Rate  TOSLINK & COAX: 48k/96k/192k 16bit/18bit/24bit 


Stereo: Up to 170m (CAT5e/6/7) 

TOSLINK/COAX: Up to 290m (CAT5e/6/7) 

Power Supply  Input: 100VAC~240VAC, 50/60Hz; Output: 12VDC, 1A 
Power Consumption  2.5W (Max) 
Work Temperature  -10 ~ +55 
Humidity  10% ~ 90% 
Net Weight  Transmitter: 110g; Receiver: 119g 
Dimension(W*H*D)  88mm x 80mm x 21.5mm 

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Technical Sheet

User Manual