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  • VQR system for reconstruction of the original voice quality.
  • Active hybrid with balanced floating telephone lines, isolated from ground using Nickel-Ferrite transformers.
  • 3rd order bandpass filter in the console return to improve rejection and eliminate crosstalk in conferences.
  • Rejection adjustment with internal 1 kHz generator and measurement via VU meter.
  • Bluetooth 4.0 (Class2 +4dBm max.) with WideBand Voice (HD Telephony): 20 Hz – 7 kHz in calls / 20–20 kHz in music reception.
  • Supported Bluetooth profiles: HSP v1.2 / HFP v1.6 / A2DP v1.2.
  • Input and output level adjustment with two LED VU meters.
  • Priority System: grants priority to the host, attenuating the guest by 12 dB when the host speaks.
  • 4 inputs: 2 for hybrid land lines (POTS) or digital telephony, and 2 wireless inputs for mobile phones via Bluetooth or VoIP phones.
  • The Bluetooth inputs can be used for both mobile phones and VoIP, allowing for unlimited expansion of digital lines.
  • All 4 lines can be conferenced with cross-gain control via a single fader on the console.
  • The 2 physical line inputs are transformer-isolated.
  • External Bluetooth antennas outside the metal chassis for greater range.
  • 1 return input from the console (Mix-Minus or auxiliary bus).
  • Compatible with consoles without a dedicated Mix-Minus output.
  • Via illuminated buttons with status indication and RING flash.
  • Private Call Attention: a Talkback button allows private conversation with the caller before putting them on-air or ending the call.
  • Unbalanced input with PLUG connector. Range: –10 to +12 dBu (nominal +4 dBu).
  • Level adjustment via front panel potentiometer with LED VU indicator.
  • Balanced output with XLR connector, nominal level +4 dBu.
  • Unbalanced stereo headphone output (PLUG).
  • Direct outputs for Telephone Line-1 and Bluetooth-1, unbalanced, nominal level 0 dBu.
FREQUENCY RESPONSE
  • With VQR activated: 50 Hz – 12,000 Hz.
  • Without VQR: from phone lines, 300 Hz – 3,400 Hz.
  • From Bluetooth mobile phones: 50 Hz – 8,000 Hz (call mode) // 20–20,000 Hz (music mode).
SIGNAL-TO-NOISE RATIO
  • With VQR activated: 70 dBA.
  • Without VQR: 50 dBA.
HARMONIC DISTORTION (THD)
  • Less than 0.2 %
  • Greater than 40 dB for +4 dBu send @ 1 kHz. Measured with a 2 km artificial line.
  • Rejection adjustment with internally generated 1 kHz tone.
  • Metal oxide varistors (SIOV).
  • Supports surges up to 2,000 V in laboratory tests.
  • Internal stabilized switching power supply, 110/220 V – 50/60 Hz.
  • Power consumption: 20 W.
  • 19” rack (1U). Height: 44 mm. Depth: 230 mm.
  • Front with mounting ears: 483 mm.
  • Includes rubber feet for desktop use.
  • Packaging: 550 × 300 × 100 mm. Weight: 3 kg.