The perfect portable power bank for travel, the 5,000mAh Power Bank features a compact size and fast charging to quickly power up your devices while you’re on the go. With a dual USB port, the 5,000mA
AV Parts Master
Jabra Speak2 75 The best professional speakerphone for hybrid working. Where s your meeting room today?This is Speak2 75, your personal pocketable device for the coffee table conferencing, dining room dialing, hotel hot desking meeting rooms of a hybrid world. It s the next generation of professional, portable speakerphone, packed with the very latest technology. With our advanced super wideband audio , precision microphone performance and technology that refines the subtle tones in your voice, today s meeting room could be a huddle room, the couch or a campervan on the beach (you can get WiFi on the beach, right?) W i d e s c r e e n for your earsForget everything you think you know about portable speakerphones. We re tearing up the rule book with super wideband audio , and an advanced full range 65mm speaker. Say what? Well, that s not a question you ll need to answer, because this advanced tech puts you (and your big ideas) front and centre in every meeting, unscrambling the widest range of frequencies in your voice s natural range, for a dramatically more powerful audio experience. Crystal clear calls and rich, powerful music. What s not to love?Let it flowYou know those sounds you make to show you re listening and engaged? Some speakerphones don t allow both sides of the conversation to speak and be heard at the same time, so those little ooohs and aaaahhhs of encouragement fall on deaf ears. Or worse, interrupt the flow for everyone. We think conversations are better when they feel natural, so Speak2 75 is engineered with advanced full duplex audio, with a supercharged chipset that goes way beyond standard speakerphone performance. So your conversations can flow freely in both directions, just like they would in person. Don t neglect the mute button though. Nobody wants to hear you eating your lunch.Most valuable playerWith four state of the art beamforming microphones and the very latest digital signal processing algorithms, it s safe to say Speak2 75 is truly at the top of its game. Wherever you put it a table, a desk, a floor it ll effortlessly field sound from all directions, harnessing every change in voice tone, so every nuance is picked up (because it s not what you say, but how you say it). All while our innovative noise reduction technology deftly bats away distracting background bother like tippy tappy keyboards and extra crunchy crisps. The result is an outstanding audio experience that s truly unmatched. When it comes to prioritising your voice, we re not playing around.Let s be clearSpeak2 75 lets you see at a glance how well your voice is being picked up, at all times, wherever you are in the room, because it s the only speakerphone to feature a custom designed Microphone Quality Indicator. This intuitive 360 degree light ring shows you clearly when you re coming across loud and clear and when you need to huddle in a little closer. It s like having your own personal voice coach in every meeting. It wouldn t do for us all to be the sameBooming Barbara will always be louder than Reserved Roger, but that doesn t make what she has to say any more important. We know how vital it is to give everyone an equal seat at the virtual table, so we engineered Speak2 75 with our latest cutting edge Voice Level Normalization technology. It means everyone in the room will always be heard whether they speak quietly with confidence or raise their voice to make their point. Everyone can be themselves and speak naturally, so you can all focus on the topic in hand rather than fiddling with volume controls. All together nowIt doesn t matter whether you re working from your kitchen table, your office desk or your treehouse, if your speaker works smoothly with your virtual meeting platform, you can get together anywhere. Speak2 75 is certified for all leading platforms (which means it optimises the whole experience and delivers professional call quality every time). So whether you prefer to jump on Microsoft Teams, Google Meet or Zoom, you can rely on seamless plug and play connectivity and reliably brilliant meetings right from the get go. Chuck us a puckThe iconic, much loved puck shape (as nicknamed by our ice hockey loving customers) of the original Speak Series gets a serious makeover with Speak2 75. It s modern and minimal, with brushed aluminum detailing and premium custom designed speaker fabric, engineered to deliver the most optimal audio experience. It s also small and durable enough to chuck into your bag. We wouldn t recommend playing ice hockey with it though. As robust as your discussionsWe ve made sure Speak2 75 is built to handle anything a busy hybrid working day throws at it from messy kitchens to deep work bags with IP64 rated protection from water and dust. So you can use it anywhere, without worrying. Even if your hybrid working week takes you to a different place every day.One small step to start. One giant leap in battery life.Just plug and play and you re off faster than you can say you re on mute . And you can go wireless with up to 32 hours battery (yep 32 whole hours even Janice s meetings aren t that long). You ll need to recharge before your Speak2 75 does. And to make setup even more of a snap, your Speak2 75 also comes with Microsoft Swift Pair and Google Fast Pair.
AV Parts Master
TabCabby 20 Vertical Charge Only20 Device Mobile AC Charging Trolley for tablets up to 11 Portable Baskets Product descriptionThe TabCabby 20 Vertical Charge Only charges 20 tablets up to 11 screen size including protective cases.With portable baskets that have adjustable dividers storing 5 tablets each.The sliding shelves store two portable baskets, making it easy to remove or replace devices.Provides maximum security safety with a dual point locking system and separate lockable power compartment.It is easy to move as it has ergonomic top handles also rounded corner bumpers and multi directional non marking wheels.This unit offers fast and flexible charging incorporating a programmable timer.With Support for Life with Lifetime Warranty (5 years electrical), shipped fully assembled. Product features Device protectionDevices are stored vertically in portable baskets with adjustable dividers to accommodate protective casesPortable baskets sit on sliding shelves, two per shelf, to allow the devices to be removed and replaced easilyCheck the Compartment Dimensions in Technical Specifications below Charging Charges 20 tablets up to 11 screen size including protective cases Device adaptors plug into 4 x 5 way power strips designed and manufactured in house Sockets accommodate larger adaptors and plugs without blocking adjacent outlets IEC socket with 1.8m 6ft power cord designed to snap out if pulled away from the wall to prevent damage Fitted with a Power7 Management System that includes; Soft start function measures the in rush current and prevents overload during start up by powering up each power strip in 1.5 second intervals, full power up occurs within 6 seconds Simultaneous charging of up to 20 devices, monitoring the current to ensure no over or under charging Fuse protection against power surges and overloads Sophisticated timer that can be set to constant charging, cycle charging and can be programmed to a charging schedule (3 schedules, 7 days a week) Easy to operate with instructional LED display screen and two push buttons to adjust charging requirements Security and protection Separate secured power compartment for ultimate safety and security Concealed lever unlocks side power compartments to enable clear access to cables and AC adaptors when required Built in heat sensor will shut off power if a device overheats or if interior temperature reaches 32C 90F degrees to prevent risk of fire or damage to devices Silent ventilation system includes side and rear vents plus a uniquely designed weldmesh base to keep devices cool with constant air circulation without the need for a noisy fan that can spread germs Locking system mounted on top surface to avoid keys snapping inside lock during movement Dual point locking system, with keys provided, to secure at the top and bottom of both device and power compartment to prevent theft, damage or tampering Inset door handles prevent protruding parts eliminating breakages Safety tested and certified by the independent Underwriters Laboratory (UL) Set upShips fully assembled with handles and wheels fittedLarge L shaped doors open wide for easy access to devices and cable management compartmentsPower7 Management system preset for 3 daily charging schedules on weekdays with no charging schedules set for weekends, instructions supplied to amend charging schedule easilyInstruction Booklet supplied with technical support via phone, email or 24 7 live chat on hand Technical specifications Unit dimensionsW700 x D550 x H1010 mm 27.6 x 21.7 x 39.8 Lifetime Warranty (5 Year Electrical)
AV Parts Master
Evolve2 65 Engineered to keep you agile. Work anywhere with superior wireless audio performance. Great call. Outstanding outcomes require outstanding call performance, and seamless, professional audio makes all the difference. We took the incredible call performance of our world leading Evolve Series and we made it even better, building in three strategically placed powerful professional microphones and adding our advanced digital chipset and latest signal processing technology. The result is outstanding call quality, every time. It s not just a great call. It s the new standard of great calls. UC certified means UC satisfied. Satisfaction guaranteed isn t something you hear very often these days, but we re bringing it back; Evolve2 65 works with all leading Unified Communications (UC) platforms, for truly seamless collaboration. If your UC platform of choice is Microsoft Teams, the Teams certified variant is perfectly adapted and optimized to give you the best experience with the platform. Hear the difference We used our state of the art sound lab to simulate a noisy office environment, with an office speech soundtrack played back through a speaker in a dummy head. Then we tested each product in exactly the same way as the same office soundtrack played, recording the microphone performance, to show how the call would sound to whoever you re talking to. Music so good, you can feel it. We ve built this headset with powerful leak tolerant 40mm speakers and powered it with our most advanced digital chipset ever. With Evolve, we brought you great music while you work. With Evolve2, we re taking audio quality to a whole new level. It s a professional headset, but not as you know it. Soundproof your ears. Whether you re working in the office or on the go, background noise can really disrupt your flow. Put on your Evolve2 65 and feel the noise around you instantly fade, as the isolating foam oval ear cushions and pioneering new angled earcup design work to effectively block out your surroundings, giving you passive noise cancellation like you ve never experienced. You could say it s like a portable quiet room for your head. Soundproof your ears. Whether you re working in the office or on the go, background noise can really disrupt your flow. Put on your Evolve2 65 and feel the noise around you instantly fade, as the isolating foam oval ear cushions and pioneering new angled earcup design work to effectively block out your surroundings, giving you passive noise cancellation like you ve never experienced. You could say it s like a portable quiet room for your head. Don t hide when you re in your stride. We ve taken our busylight to a whole new level, making it visible from any direction. The red light is automatically activated when you re on a call or in a meeting, or you can activate it yourself at the touch of a button. So, even when you re right in the middle of everything, your busylight will protect you from all angles, and all interruptions. It s like having a built in security guard for your concentration. Battery for days. Whether you re in and out of meetings, walking the corridors or working remotely, it s good to know your headset can handle the pace. Our advanced battery efficiency technology and that incredible little chipset have helped us to squeeze an industry leading 37 hours of juice out of this powerful wireless headset. But we ve got you covered with the handy charging stand as well, just in case.a Full charge Get 37 hours battery life in 90 minutes Fast charge Get 8 hours battery life in 15 minutes True comfort. True luxury. We set out to create a wireless headset that would feel so great, you d forget you were even wearing it. We designed the perfect shape using biometric measurements from hundreds of heads. Then we added soft memory foam cushions that mold to your ear s natural contours. Finally, we assembled it using durable, premium materials. Because when it comes to your headset, true luxury is forgetting it s there. Jabra Direct Jabra Direct makes sure that your headset always has the latest firmware, guaranteeing you ll have the most up to date features, bug fixes and easy access to compatibility updates. With the user friendly Direct Dashboard, staying current has never been easier. Jabra Sound Personalise your call and music experience with a customisable equaliser in the Jabra Sound app. PanaCast 20 Engineered for intelligent AI enabled personal video conferencing Premium video quality 4K Ultra HD video Picture perfect AI enabled image enhancement Flexible Portable, lightweight design Personal video conferencing, but not as you know it As we all navigate the realities of trying to stay connected and productive, video conferencing is more important than ever. It s time to experience the next generation of intelligent, secure, portable video collaboration with Jabra PanaCast 20. Harnessing advanced on board AI to deliver an intelligent feature set that takes your video experience to the next level, PanaCast 20 is a personal camera that knows exactly what you need, when you need it. Any light is good light Today s professionals need to take video calls from everywhere. With PanaCast 20, AI based Intelligent Lighting Optimization analyses your environment and automatically adjusts your image in real time to enhance the video quality. Two streams are better than one Get ready for more engaging presentations with PanaCast 20. Our unique Picture in Picture mode enables you to share a close up as your main image while continuing to present in a smaller window, thanks to on board Edge processing that combines two real time video streams into one. What's more Picture in Picture mode works with any UC platform, even if they don't support dual stream devices. Collaborate in confidence PanaCast 20 is engineered for data security. An advanced on board Edge AI chipset drives all of the intelligent features, as well as processing your video on the device itself to reduce the risk of data breaches. So you can get on with whatever you re doing, without worrying. Share what s good. Hide what s not. You can t be camera ready all the time. That s why PanaCast 20 comes with an integrated privacy cover, to give you total control. Simply slide the privacy cover across your camera lens when you need privacy and slide it back again when you re ready to turn your video on.
AV Parts Master
Jabra Speak2 75 The best professional speakerphone for hybrid working. Where s your meeting room today?This is Speak2 75, your personal pocketable device for the coffee table conferencing, dining room dialing, hotel hot desking meeting rooms of a hybrid world. It s the next generation of professional, portable speakerphone, packed with the very latest technology. With our advanced super wideband audio , precision microphone performance and technology that refines the subtle tones in your voice, today s meeting room could be a huddle room, the couch or a campervan on the beach (you can get WiFi on the beach, right?) W i d e s c r e e n for your earsForget everything you think you know about portable speakerphones. We re tearing up the rule book with super wideband audio , and an advanced full range 65mm speaker. Say what? Well, that s not a question you ll need to answer, because this advanced tech puts you (and your big ideas) front and centre in every meeting, unscrambling the widest range of frequencies in your voice s natural range, for a dramatically more powerful audio experience. Crystal clear calls and rich, powerful music. What s not to love?Let it flowYou know those sounds you make to show you re listening and engaged? Some speakerphones don t allow both sides of the conversation to speak and be heard at the same time, so those little ooohs and aaaahhhs of encouragement fall on deaf ears. Or worse, interrupt the flow for everyone. We think conversations are better when they feel natural, so Speak2 75 is engineered with advanced full duplex audio, with a supercharged chipset that goes way beyond standard speakerphone performance. So your conversations can flow freely in both directions, just like they would in person. Don t neglect the mute button though. Nobody wants to hear you eating your lunch.Most valuable playerWith four state of the art beamforming microphones and the very latest digital signal processing algorithms, it s safe to say Speak2 75 is truly at the top of its game. Wherever you put it a table, a desk, a floor it ll effortlessly field sound from all directions, harnessing every change in voice tone, so every nuance is picked up (because it s not what you say, but how you say it). All while our innovative noise reduction technology deftly bats away distracting background bother like tippy tappy keyboards and extra crunchy crisps. The result is an outstanding audio experience that s truly unmatched. When it comes to prioritising your voice, we re not playing around.Let s be clearSpeak2 75 lets you see at a glance how well your voice is being picked up, at all times, wherever you are in the room, because it s the only speakerphone to feature a custom designed Microphone Quality Indicator. This intuitive 360 degree light ring shows you clearly when you re coming across loud and clear and when you need to huddle in a little closer. It s like having your own personal voice coach in every meeting. It wouldn t do for us all to be the sameBooming Barbara will always be louder than Reserved Roger, but that doesn t make what she has to say any more important. We know how vital it is to give everyone an equal seat at the virtual table, so we engineered Speak2 75 with our latest cutting edge Voice Level Normalization technology. It means everyone in the room will always be heard whether they speak quietly with confidence or raise their voice to make their point. Everyone can be themselves and speak naturally, so you can all focus on the topic in hand rather than fiddling with volume controls. All together nowIt doesn t matter whether you re working from your kitchen table, your office desk or your treehouse, if your speaker works smoothly with your virtual meeting platform, you can get together anywhere. Speak2 75 is certified for all leading platforms (which means it optimises the whole experience and delivers professional call quality every time). So whether you prefer to jump on Microsoft Teams, Google Meet or Zoom, you can rely on seamless plug and play connectivity and reliably brilliant meetings right from the get go. Chuck us a puckThe iconic, much loved puck shape (as nicknamed by our ice hockey loving customers) of the original Speak Series gets a serious makeover with Speak2 75. It s modern and minimal, with brushed aluminum detailing and premium custom designed speaker fabric, engineered to deliver the most optimal audio experience. It s also small and durable enough to chuck into your bag. We wouldn t recommend playing ice hockey with it though. As robust as your discussionsWe ve made sure Speak2 75 is built to handle anything a busy hybrid working day throws at it from messy kitchens to deep work bags with IP64 rated protection from water and dust. So you can use it anywhere, without worrying. Even if your hybrid working week takes you to a different place every day.One small step to start. One giant leap in battery life.Just plug and play and you re off faster than you can say you re on mute . And you can go wireless with up to 32 hours battery (yep 32 whole hours even Janice s meetings aren t that long). You ll need to recharge before your Speak2 75 does. And to make setup even more of a snap, your Speak2 75 also comes with Microsoft Swift Pair and Google Fast Pair. PanaCast 20Engineered for intelligent AI enabled personal video conferencing YOUR NEXT WEBCAM IS NOT A WEBCAMEngineered for intelligent AI enabled personal video conferencing Premium video quality4K Ultra HD video Picture perfectAI enabled image enhancement FlexiblePortable, lightweight design Personal video conferencing, but not as you know itAs we all navigate the realities of trying to stay connected and productive, video conferencing is more important than ever. It s time to experience the next generation of intelligent, secure, portable video collaboration with Jabra PanaCast 20. Harnessing advanced on board AI to deliver an intelligent feature set that takes your video experience to the next level, PanaCast 20 is a personal camera that knows exactly what you need, when you need it. Picture perfect. Wherever you work.Video calls are now part of everyday life, but poor picture quality impacts the whole experience. PanaCast 20 uses advanced processors, powerful on board AI and a 13 megapixel camera to deliver an impressive real time 4K Ultra HD image that s crystal clear, with virtually no latency. So you can deliver that big presentation knowing you ll look your best. Are you ready for your close up?When you re on an important video call, being seen clearly makes all the difference. Our Intelligent Zoom feature uses powerful AI to continuously scan and adjust your picture in real time, ensuring you re always in the centre of the frame. Now you can experience more immersive, natural video collaboration without having to stay rooted to the spot. PanaCast 20 delivers a meeting experience that s not just better, it s completely reinvented. Any light is good lightToday s professionals need to take video calls from everywhere. With PanaCast 20, AI based Intelligent Lighting Optimization analyses your environment and automatically adjusts your image in real time to enhance the video quality. Two streams are better than oneGet ready for more engaging presentations with PanaCast 20. Our unique Picture in Picture mode enables you to share a close up as your main image while continuing to present in a smaller window, thanks to on board Edge processing that combines two real time video streams into one. What 39;s more Picture in Picture mode works with any UC platform, even if they don 39;t support dual stream devices. Collaborate in confidencePanaCast 20 is engineered for data security. An advanced on board Edge AI chipset drives all of the intelligent features, as well as processing your video on the device itself to reduce the risk of data breaches. So you can get on with whatever you re doing, without worrying. Share what s good. Hide what s not.You can t be camera ready all the time. That s why PanaCast 20 comes with an integrated privacy cover, to give you total control. Simply slide the privacy cover across your camera lens when you need privacy and slide it back again when you re ready to turn your video on. Here. There. Anywhere.When you work flexibly, you can be joining meetings from anywhere. This clever little camera is perfectly portable, with a compact design that easily slots over the top of any screen, an integrated, foldable mounting clip and a protective carry case. So you re only ever seconds away from seamless, intelligent, high quality video collaboration. From the caf to the kitchen table. Enjoy great video meetings anywhere. and, action.You re used to hitting the ground running, so why settle for tech that holds you back? PanaCast 20 is plug and play, for instant connection from the very first time you use it. Simply connect the USB C cable to your computer and you re ready to collaborate from anywhere. Get right to it with PanaCast 20.
AV Parts Master
PanaCast 20Engineered for intelligent AI enabled personal video conferencing YOUR NEXT WEBCAM IS NOT A WEBCAMEngineered for intelligent AI enabled personal video conferencing Premium video quality4K Ultra HD video Picture perfectAI enabled image enhancement FlexiblePortable, lightweight design Personal video conferencing, but not as you know itAs we all navigate the realities of trying to stay connected and productive, video conferencing is more important than ever. It s time to experience the next generation of intelligent, secure, portable video collaboration with Jabra PanaCast 20. Harnessing advanced on board AI to deliver an intelligent feature set that takes your video experience to the next level, PanaCast 20 is a personal camera that knows exactly what you need, when you need it. Picture perfect. Wherever you work.Video calls are now part of everyday life, but poor picture quality impacts the whole experience. PanaCast 20 uses advanced processors, powerful on board AI and a 13 megapixel camera to deliver an impressive real time 4K Ultra HD image that s crystal clear, with virtually no latency. So you can deliver that big presentation knowing you ll look your best. Are you ready for your close up?When you re on an important video call, being seen clearly makes all the difference. Our Intelligent Zoom feature uses powerful AI to continuously scan and adjust your picture in real time, ensuring you re always in the centre of the frame. Now you can experience more immersive, natural video collaboration without having to stay rooted to the spot. PanaCast 20 delivers a meeting experience that s not just better, it s completely reinvented. Any light is good lightToday s professionals need to take video calls from everywhere. With PanaCast 20, AI based Intelligent Lighting Optimization analyses your environment and automatically adjusts your image in real time to enhance the video quality. Two streams are better than oneGet ready for more engaging presentations with PanaCast 20. Our unique Picture in Picture mode enables you to share a close up as your main image while continuing to present in a smaller window, thanks to on board Edge processing that combines two real time video streams into one. What 39;s more Picture in Picture mode works with any UC platform, even if they don 39;t support dual stream devices. Collaborate in confidencePanaCast 20 is engineered for data security. An advanced on board Edge AI chipset drives all of the intelligent features, as well as processing your video on the device itself to reduce the risk of data breaches. So you can get on with whatever you re doing, without worrying. Share what s good. Hide what s not.You can t be camera ready all the time. That s why PanaCast 20 comes with an integrated privacy cover, to give you total control. Simply slide the privacy cover across your camera lens when you need privacy and slide it back again when you re ready to turn your video on. Here. There. Anywhere.When you work flexibly, you can be joining meetings from anywhere. This clever little camera is perfectly portable, with a compact design that easily slots over the top of any screen, an integrated, foldable mounting clip and a protective carry case. So you re only ever seconds away from seamless, intelligent, high quality video collaboration. From the caf to the kitchen table. Enjoy great video meetings anywhere. and, action.You re used to hitting the ground running, so why settle for tech that holds you back? PanaCast 20 is plug and play, for instant connection from the very first time you use it. Simply connect the USB C cable to your computer and you re ready to collaborate from anywhere. Get right to it with PanaCast 20.
AV Parts Master
Product description The GO2 MINI charges 5 Tablets or Smartphones up to 13 screen size in vertical compartments. Dual 5 x USB A and USB C charging, the USB C ports provide power delivery of 30W which can fully charge a tablet in 2 hours. USB A ports provide power delivery of 15W. Lightweight but built tough to the same construction as heavy duty tool cases. Portable flexible, the fabric basket with integral power hub can be carried from room to room and be plugged in for charging, internal dividers can be adjusted or removed. 5 x 3 in 1 cable set included (USB A to USB Type C, Lightning Micro USB). Refined, looks great in any environment. With Support for Life with Lifetime Warranty (5 years electrical), shipped fully assembled. Device protection Devices are stored in felt lined device compartment between adjustable dividers Vertical dividers, manufactured with a strong plastic core and padded with soft felt material to protect equipment Removable dividers can be adjusted to suit the equipment inside or completely removed for open storage charging Adjustable straps to keep the units secure during transport, the straps will cater for tablets up to 13 Charging Simultaneous charging of all 5 devices to ensure devices are fully charged as fast as possible Dual 5 x USB A and USB C charging, the USB C ports provide power delivery of 30W which can fully charge a tablet in 2 hours. USB A ports provide power delivery of 15W
AV Parts Master
iPad Charge Store Basket Station The zioxi iPad basket stations provide charging, universal USB A sync and secure storage for 16 or 32 iPads and tablets in carry baskets. Each portable iPad carry basket accommodates 4 iPads and USB Tablet devices in any standard case design. With the carry baskets in the iPad charging station, only a short length of USB cable is presented to users for each tablet, keeping the static cupboard neat tidy and the cables well out of the way. Robust, easy to carry, one piece carry baskets which provide great device protection. Also available in USB C Charge only or mains sockets only variants, with onView Smart Control and as a mobile trolley or integrated into an zioxi TeacherWall. Carry, sync, charge and store your iPads tablets The zioxi iPad Basket Stations provide the ability to charge sync 16 or 32 iPads and tablets. The carry baskets accommodate 4 iPads and tablets with or without their cases. Key features: iPad charging stations in a compact, unobtrusive cupboard design Charge using Apple AC adapters (not included) or select our integrated USB C power supply option Alternative option of integrated charge data sync using the zioxi Apple MFI certified universal USB A charge sync module (USB A to Lightning cables required but not included) Two handles per basket so even little ones can help ( or up to 4 baskets can be carried at once by a fully grown one! ) Robust, easy to carry one piece carry baskets which provide great device protection Baskets can placed on their sides making access for students very easy and safe Innovative front access to the cabinet for ease of use, providing a usable top surface Only a short length of USB cable is presented at the front to the side of the baskets so USB cables are all neat tidy and very simple to use Doors fold back 270 degrees magnetically retained right out of the way Smooth, easy clean surfaces Also available in compact trolley, with onView Smart Control and as integrated modules within the zioxi TeacherWall
AV Parts Master