What is the Tracker's audio ports electrical specification?

Audio input: 

Line Input:
 - Audio input impedance: 29k
 - Input level: 8,2 dBu peak
 - SNR: 90 dB

Microphone Input:
 - Microphone input impedance: 2,9k
 - Input level: 8,2 dBu peak

Audio Output:

Line Output:
  - Output impedance: 10k
  - Output level: 9 dBu peak
  - SNR: 97 dB

Headphone Output:
  - Output impedance: 16
  - Output level: 17,6 dBm
  - SNR: 98 dB