The Biamp TesiraFORTE AVB VT4 (SKU 920-00452-00003) is an AVB-networked fixed I/O DSP with 4 mic/line inputs with acoustic echo cancellation, 4 outputs and two VoIP interfaces, in a 1U chassis. It carries 128 x 128 channels of AVB and provides a SIP VoIP RJ-45 interface plus an FXO analogue telephone interface for conferencing.
Key Features
128 x 128 channels of AVB
4 mic/line inputs with acoustic echo cancellation
4 mic/line outputs
SIP VoIP interface via RJ-45
FXO analogue telephone interface via RJ-11
Gigabit Ethernet port
RS-232 serial port and 4-pin GPIO
2-line OLED display with capacitive-touch navigation
Internal universal power supply
Configured and controlled via Tesira software
Rack mountable, 1U
Covered by Biamp 5-year warranty
Specifications
| Network audio | 128 x 128 channels AVB |
| Inputs | 4 mic/line with AEC |
| Outputs | 4 mic/line |
| Telephony | SIP VoIP (RJ-45) + FXO (RJ-11) |
| Control ports | Gigabit Ethernet, RS-232, 4-pin GPIO |
| Frequency response | 20 Hz – 20 kHz, +0.25 / -0.5 dB |
| THD+N (0 dB gain) | < 0.006% |
| EIN | < -125 dBu |
| Dynamic range | > 108 dB |
| Input impedance (balanced) | 8 kohm |
| Output impedance (balanced) | 207 ohm |
| Maximum input | +24 dBu |
| Input gain range | 0-66 dB (6 dB steps) |
| Phantom power | +48 VDC (7 mA/input) |
| Sampling rate | 48 kHz |
| Converters | 24-bit |
| Power supply | 100-240 VAC 50/60 Hz, < 35W |
| Rack height | 1U |
| Dimensions (W x H x D) | 483 x 44 x 267 mm |
| Weight | 3.63 kg |





