B-DF4 4W Dante Beltpack, B-FW1 4W beltpack, B-HPS HP and LS monitor, B-HPA dual Headphone monitoring, B-MA2 Dual mic preamp, Potbox PB2


The B-DF4 is a network four channel four wire unit in a compact aluminium beltpack enclosure.
With four audio inputs and four audio outputs it will meet the most demanding beltpack requirements. The B-DF4 has a built in speaker so may be used as a handy four wire box.
B-DF4 front
The talk buttons can be programmed to operate push to talk, latching or 'smart' (tap to latch, push to talk). When selected to talk the buttons illuminate red.
Listen input(s) may be enabled/disabled in conjunction with the listen select switch. Buttons may be set to flash on incoming audio.
Programming the B-DF4 is simple using the OLED display which also shows line input and output levels during normal operation.

The following features are programmable:

• Microphone amplifier gain range 30dB to 60dB
• Phantom power on/off
B-DF4 front • Highpass filter some/lots
• Mic limiter some/lots
• Headphone limiter some/lots
• Sidetone on/off/full level/-6dB/-12dB
• Loudspeaker on/off
• Talk switch mode momentary/latching/smart
• Headphones - select individual inputs to left/right/both ears
• Vox input detect on/off

Power may be supplied Power over ethernet (PoE) or a 9-16 volt external DC supply.





The B-FW1 is an analogue single channel four wire beltpack which includes a built in speaker.

B-DF4 front B-DF4 front













The talk buttons can be programmed to operate push to talk, latching or 'smart' (tap to latch, push to talk).
Programming the B-FW1 is simple using the OLED display which also shows line input and output levels during normal operation.

The following features are programmable:

• Microphone amplifier gain range 30dB to 60dB
• Phantom power on/off
• Highpass filter some/lots
• Mic automatic gain control none/some/lots
• Line input gain 6dB, 12dB or 18dB of gain
• Headphone limiter some/lots
• Sidetone on/off/full level/-6dB/-12dB
• Loudspeaker on/off
• Talk switch mode momentary/latching/smart

Power requirements are a PP3 size 9V battery (alkaline recommended) or a 9-16 volt external DC supply.


The B-HPS is a battery powered headphone monitor unit which includes a built in speaker.

B-DF4 front B-DF4 front













The audio input is on male or female XLR, the unused XLR may be used as an audio pass through to another unit.
The following features are programmable:

• +20dB input gain boost on/off
• Headphone level limiting off/low/medium/high
• Loudspeaker enable on/off

Power requirements are a PP3 size 9V battery (alkaline recommended) or a 9-16 volt external DC supply.


The B-HPA is a two input mono/stereo headphone amplifier in a compact aluminium beltpack enclosure.

B-DF4 front B-DF4 front













Inputs may routed to either earpiece so the unit may be configured with stereo or dual mono inputs.
Programming the B-HPA is simple using the OLED display which also shows line input levels during normal operation.

The following features are programmable:

• Input routing stereo/mono
• Channel1/channel2 headphone limiting low/medium/high

Power requirements are a PP3 size 9V battery (alkaline recommended) or a 9-16 volt external DC supply.


The B-MA2 contains two broadcast quality variable gain microphone amplifiers with switchable
phantom power

B-DF4 front B-DF4 front













Programming the B-MA2 is easy using the OLED display which meters output levels during normal operation.

The following features are programmable:

• Channel1/channel2 gain 30dB to 60dB
• Channel1/channel2 phantom enable
• Channel1/channel2 phantom voltage 12V/48V
• Highpass filter none/some/lots

Power requirements are a PP3 size 9V battery (alkaline recommended) or a 9-16 volt external DC supply.


A small and simple single input headphone amplifier.

CMA20 CMA20 This headphone amplifier accepts either a 3.5mm or 1/4 inch jack. The on/off switch is on the volume control and the unit takes a PP3 size 9 volt battery.
We can supply the unit with either a male or female XLR for audio in.
Supplied with belt clip.


CMA20











A volume control in a box made as interesting as possible.

potbox potbox rear











Looped through input/output. Unit is supplied with a jack socket suitable for both 'A' gauge (stereo) or 'B' gauge (PO) jacks. We can supply it fitted with a mono jack or almost anything else really.