GS-FW029 - 12 in 10 out Talkback Box with Monitoring I/O additionally the local speaker has

additionally the local speaker has a selectable cut

the 4020C is your compact

There are two audio inputs with a variable pot for headphone monitoring for a single commentator

Versatile Two Channel 4 Wire Desktop Unit

GS-FW029 - 12 in 10 out Talkback Box with Monitoring I/O additionally the local speaker hasFour Wire IFB 12 Channel Desktop Talkback Unit The GS FW029 is a 12 channel talkback unit originally designed for talkSPORT. Inputs The unit has 12 inputs terminated on 2 x 25 way D connectors where channels 1 to 10 are fixed at 0dB and channels 11 and 12 utilise gain pots with a range of 20dBu to +10dBu. The led present on each channel, when illuminated indicates the presence of signal. Outputs The unit has 10 talkbacks and 1 one global talkback all