AlienBees B400 Yellow AlienBees B400 Pink AlienBees B400 Green AlienBees B400 White AlienBees B400 Color Options
AlienBees™ B400 Flash Unit
Part Number: B400
Price: $224.95

  • 6 f-stop power variability (5 Ws to 160 Ws)
  • stepless slider adjustment from full to 1/32 power
  • 0.5 second recycle to full power
  • 1/2000 second flash duration (t.1) at full power
  • internally fan cooled for heavy duty use
  • WYSIWYG modeling previews
  • standard 120 VAC, 50-60 Hz power requirements
  • 2.5 pounds total weight
  • 60-Day Absolute Satisfaction Guarantee
  • 2-Year Factory Warranty
Limited Edition Color - Purple Haze still available!

The AlienBees™ B400 is a powerful, self-contained studio flash unit with adjustable output from full power (160 Ws) down to 1/32nd of the total power (5 Ws). This flashpower is adjusted on the back control panel with a slide fader, capable of adjusting in whole f-stop increments and everywhere in between. When adjusted from a higher to a lower setting, the unit will automatically dump the excess power for accurate output.

With precision voltage regulated circuits supplying consistent output, the B400 boasts true “what-you-see-is-what-you-get” modeling lamp accuracy. The modeling lamp can be set to full brightness, turned completely off, or set to track the power changes. Furthermore, the standard 150 Watt modeling lamp may be used as a recycle indicator, turning itself off when the unit is recycling, and coming back on to let you know when the unit is fully recycled and you are ready to shoot again. Ready for heavy-duty, all-day shooting, the AlienBees™ have built-in cooling fans to keep up with their fast recycle.

The B400 arrives with a sync cord allowing you to connect your camera to the unit to trigger the flash. The unit additionally has a built-in slave tripper to allow wireless firing. The unit has standard 120 VAC (50-60 Hz) power requirements and arrives with our 15-foot power cord to connect to a standard, grounded outlet for power.

Both versatile and indestructible, the AlienBees™ units are housed in high-impact Lexan polycarbonate (the same material used for bullet-proof glass), keeping them lightweight and ready to travel.

AlienBees™ B400 AlienBees™ B800 AlienBees™ B1600
True Wattseconds 160 Ws 320 Ws 640 Ws
Lumenseconds 7,000 Ls 14,000 Ls 28,000 Ls
Power Variability 6 f-stops (full to 1/32) 6 f-stops (full to 1/32) 6 f-stops (full to 1/32)
Recycle to 100% 0.5 seconds 1 second 2 seconds
Flash Duration (t.5) 1/6000 second (at full power)
1/3000 second (at 1/32 power)
1/3300 second (at full power)
1/1650 second (at 1/32 power)
1/1800 second (at full power)
1/900 second (at 1/32 power)
Flash Duration (t.1) 1/2000 second (at full power)
1/1000 second (at 1/32 power)
1/1100 second (at full power)
1/550 second (at 1/32 power)
1/600 second (at full power)
1/300 second (at 1/32 power)
Power Requirements 120 VAC, 50-60 HZ 120 VAC, 50-60 HZ 120 VAC, 50-60 HZ
Average Current Draw 6 amps average 6 amps average 6 amps average
Sync / Trigger Voltage less than 6 volts less than 6 volts less than 6 volts
Modeling Lamp 150 Watt supplied
(150 Watt max.)
150 Watt supplied
(150 Watt max.)
150 Watt supplied
(150 Watt max.)
Flashtube 14mm single-ring tube 14mm single-ring tube 14mm single-ring tube
Stand Mount fits stands up to 5/8" fits stands up to 5/8" fits stands up to 5/8"
Umbrella Mount fits poles up to 3/8" fits poles up to 3/8" fits poles up to 3/8"
Standard Reflector 7AB/R 7-inch silver reflector
(80° beam spread)
7AB/R 7-inch silver reflector
(80° beam spread)
7AB/R 7-inch silver reflector
(80° beam spread)
Weight 2.5 pounds 2.9 pounds 3.7 pounds
Dimensions 8.5” l x 7.875” h x 5.75” w 8.5” l x 7.875” h x 5.75” w 8.5” l x 7.875” h x 5.75” w

Dimensions Note: length measurements taken from the front of the shipping cover (in place on the unit’s faceplate) to the back panel; height measurements taken from the top of the umbrella screw to the bottom of the light stand top coupler, folded back underneath the unit; width measurements taken from side to side at the widest points

See Expected Output
Connecting the flash unit to your camera: Each AlienBees™ flash unit arrives with the ABSC standard 15-foot sync cord for hardwired connection to your camera. The cord connects to the flash unit on the unit’s back control panel (1/8-inch sync plug), then connects to your camera’s PC-sync outlet. This outlet may be labeled “PC sync,” “PC terminal,” “X-sync socket,” “external flash connector,” or “flash sync terminal” – the label varies by camera manufacturer. If your specific camera does not have a PC outlet, we offer a hot shoe adapter that fits in the standard ISO hot shoe of most cameras to enable PC-connection. For additional flash/camera synchronization options, see the information below about remote controls.

Light Stands: Each AlienBees™ flash unit must be securely mounted to a light stand for use. The stand mount is compatible with all Paul C. Buff light stands as well as most standard light stands having top couplers up to 5/8-inch.

Portable Power: For portable, battery power we recommend the use of our Vagabond Portable Power Systems.

Remote Controls: The AlienBees™ units may be used with our CyberSync™ system (compatible with both the CST transmitter and the Cyber Commander™). As the AlienBees™ are generation one Paul C. Buff™ lights, they may be used with either the CSR, CSRB, CSR+ and/or CSRB+ receivers, but not the CSXCV transceiver. The units may additionally be used with the LG4X™ wired remote control as well as older Paul C. Buff™ remotes incorporating the telephone cord connection (such as the retired RR1 RadioRemote One). The units are compatible with most other third party triggering receivers (such as the PocketWizard®). A 1/8-inch to 1/8-inch non-attenuated mini male mono cord such as our CSSC is required to connect the receiver to the AlienBees™ unit.

PLM™ and Umbrellas: Each AlienBees™ unit has an umbrella shaft that runs along the top length of the unit housing, fitting standard umbrella poles up to 3/8-inch in diameter. It may be used with the PLM™ system (both the current model and previous models) as well as retired Paul C. Buff™ umbrellas. The PLM™ system's on-axis speedring mount may be used as well.

Softboxes and Octaboxes: The faceplate on each AlienBees™ unit has four holding fingers that expand and contract to hold speedrings for softbox and octabox attachment. The unit may be used with any of our foldable softboxes, octaboxes or stripbox as well as retired models of Paul C. Buff™ softboxes and octaboxes. When using softboxes by other manufacturers, you will need to get a Paul C. Buff™ compatible speedring.

Reflectors: The four holding fingers on the faceplate also expand and contract to hold various reflectors. Each AlienBees™ unit arrives with our 7AB/R 7-inch silver reflector for general use and is additionally compatible with our 8.5HOR 8.5-inch high-output silver reflector, the 11LTR 11-inch long-throw reflector, the 22HOBD and 22HOBD-W beauty dishes, the UBR background reflector and the 7UR reflector. The UMF LiteMod™ Unit Mainframe (and its associated accessories) may also be used. If you wish to use honeycomb grids, the 7-inch grids (HG10, HG20, HG30, HG40 and the HG4X set) are compatible with the supplied 7-inch reflector.

Gels and Filters: Our standard gels and filters (CF6, CF20, WF6, UV6, DF6 and ND6) may all be used with AlienBees™ units, used with the LiteMod™ system or with the 7-inch reflector using clips.

Travel Gear: One AlienBees™ unit can be carried in our PCBBAG Paul C. Buff™ carrying bag (with the shipping cover, reflector, cords and room for other small accessories). For consideration of travel cases from other manufacturers, the AlienBees™ dimensions are 8.5" length (including the shipping cover) x 7.875" height (from the top of the umbrella screw to the bottom of the light stand top coupler, folded back underneath the unit) x 5.75" width.

Replacing AlienBees™ Components: For future replacement needs, the flashtube used in each AlienBees™ unit is the AWFT14MMUV flashtube. This is a user-replaceable tube arriving with instructions for replacement. The modeling lamp used in the unit is the 150W modeling lamp, also user-replaceable. While other flashtubes may not be substituted, other wattage modeling lamps may be used with the AlienBees™ if a lower wattage bulb is desired. The bulb must have a standard, medium Edison-type base and may not exceed 150 watts.