{"product_id":"adastra-h25b-handheld-pa-system-with-neckband-mic-bluetooth","title":"Adastra H25B Handheld PA System with Neckband Mic \u0026 Bluetooth","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Adastra H25B is a fully integrated PA unit built into an ergonomic ABS handheld housing. It runs from either the mains or an internal rechargeable battery, giving you up to 25W of output whether you have a socket nearby or not. That makes it a practical choice for demonstrations, speech reinforcement in classrooms and general mobile public address where you need to be heard clearly without a lot of setup.\u003c\/p\u003e\n\u003cp\u003eFor hands-free speaking, the H25B comes with a VHF wireless neckband microphone system. The beltpack transmitter uses a quartz crystal locked carrier at 174.1MHz for stable tuning, and it works at distances up to 35m from the main unit. The neckband style keeps your hands free while you move around, which suits teaching, guided tours and product demos. The beltpack runs on a single 9Vdc PP3 battery and weighs just 76g without it.\u003c\/p\u003e\n\u003cp\u003eAlongside live speech, the unit handles background music through three sources. A built-in Bluetooth receiver lets you stream from a phone or tablet, an internal USB media player takes a USB stick (US: flash drive), and there's an FM radio tuner too. The main unit measures 155 x 183 x 285mm and weighs 2.74kg, with a frequency response of 100Hz to 12kHz and a signal-to-noise ratio above 75dB. Battery life reaches up to 7 hours for voice use and around 2 hours when running a signal source.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply : main unit\u003c\/td\u003e\n\u003ctd\u003e230Vac, 50Hz or internal rechargeable battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBatteries : beltpack transmitter\u003c\/td\u003e\n\u003ctd\u003e9Vdc PP3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power : max.\u003c\/td\u003e\n\u003ctd\u003e25W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery life\u003c\/td\u003e\n\u003ctd\u003e7 hours max. (voice) 2 hours max. (signal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e100Hz - 12kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVHF operating distance\u003c\/td\u003e\n\u003ctd\u003e35m (max.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;75dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrier frequency\u003c\/td\u003e\n\u003ctd\u003e174.1MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio source\u003c\/td\u003e\n\u003ctd\u003eUSB player, FM tuner, Bluetooth receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVHF tuning stability\u003c\/td\u003e\n\u003ctd\u003e0.005% quartz crystal locked\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions : VHF beltpack\u003c\/td\u003e\n\u003ctd\u003e205mm x 68mm x 25mm (e x .mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight : VHF beltpack\u003c\/td\u003e\n\u003ctd\u003e0.08KG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions : main unit\u003c\/td\u003e\n\u003ctd\u003e155mm x 183mm x 285mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight : main unit\u003c\/td\u003e\n\u003ctd\u003e2.74KG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSPL max.\u003c\/td\u003e\n\u003ctd\u003e80dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/952412UK_0716dc37-48d2-456b-b60c-102aa451c2dd.pdf?v=1785052481\" target=\"_blank\"\u003eProduct Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eCan the H25B run without mains power?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. It has an internal rechargeable battery, so you can use it away from a socket. You also have the option of running it from 230Vac mains at 50Hz when power is available.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does the battery last?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe main unit gives up to 7 hours for voice use and up to 2 hours when playing a signal source such as music. The VHF beltpack transmitter uses a separate 9Vdc PP3 battery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat audio sources can I play through it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThree: a Bluetooth receiver for streaming from a phone or tablet, an internal USB media player for a USB stick, and an FM radio tuner.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the wireless range of the neckband mic?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe VHF neckband microphone works at distances up to 35m from the main unit. It uses a quartz crystal locked carrier at 174.1MHz for stable tuning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the power output?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe H25B delivers a maximum of 25W, with a maximum SPL of 80dB and a frequency response of 100Hz to 12kHz.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is it best suited to?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt works well for demonstrations, speech reinforcement in educational settings and mobile public address where you need a portable, hands-free option.\u003c\/p\u003e\n","brand":"AVSL","offers":[{"title":"Default Title","offer_id":53272114888971,"sku":"952.412UK","price":139.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/952412UK_0.jpg?v=1785052503","url":"https:\/\/niori.co.uk\/products\/adastra-h25b-handheld-pa-system-with-neckband-mic-bluetooth","provider":"Niori","version":"1.0","type":"link"}