Alfatron TPA33

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The TPA33 is an audio extender set, comprising of a Transmitter and Receiver. It extends a stereo analogue audio signal up to 170m, and a TOSLINK or COAX digital audio signal up to 290m via a single CAT6 cable

Product Features:

  • Three switchable audio inputs: TOSLINK, COAX & Stereo RCA
  • Three synchronous audio outputs: TOSLINK, COAX & Stereo RCA
  • The transmitter is powered by the receiver’s 12VDC PoC (Power of Cat Cable) technology
  • The transmission distance of Stereo audio signal can up to 170m/ 557feet, and the TOSLINK and COAX audio signal up to 290m/ 951feet over a single CAT6 cable.


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 
Transmission Distance  Stereo: Up to 170m (CAT6)

TOSLINK/COAX: Up to 290m (CAT6)

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 


1. Q – What is the ALF-TP33?
A – It is and audio extender designed to extend stereo audio up to 557 feet / 170m for stereo and up to 951 feet / 290m.

2. Q – What audio input does the TP33 support?
A – 1 x Toslink, 1 x COAX and 1 x 3.5mm jack input.

3.Q – What audio output does theALF-TP33 support?
A – 1 x Toslink, 1 x COAX and 1 x L&R RCA output.

4.Q – Do both the transmitter and receiver require power?
A – No, the Transmitter is powered by the Receiver via the CAT cable.

5.Q – Are the audio outputs selectable?
A – The outputs are synchronous.