{"product_id":"herdio-bluetooth-wall-amplifier-4-channel-volume-control","title":"Herdio Bluetooth Wall Amplifier 4-Channel Volume Control","description":"\u003cp\u003e\u003cstrong\u003eThe Herdio HWA-16BT-4CH is an in-wall Bluetooth amplifier and four-channel volume controller that connects up to four passive speakers and accepts USB, microphone, and 3.5mm aux inputs for whole-room audio.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis slim wall-plate amplifier combines a compact form factor with versatile inputs and independent speaker outputs so you can add distributed audio control without bulky gear. It supports Bluetooth streaming up to about 30 feet, direct USB playback, paging via mic input, and simple aux\/line-level connections — all powered by the included 12V 3A adapter. The plate mounts like a standard outlet and routes speaker connections to labeled terminals, making it a tidy option for home or small commercial installations.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I connect speakers and power the Herdio wall amplifier?\u003c\/h3\u003e\n\u003cp\u003eWiring the unit is straightforward: attach each speaker pair to the corresponding positive and negative terminals on the amplifier plate, then plug the supplied 12V 3A adapter into the rear power jack. The amplifier supports two pairs or up to four individual speakers across its independent channels.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConnect positive speaker wire to positive terminal, negative to negative terminal.\u003c\/li\u003e\n  \u003cli\u003eUse the included AC adapter for stable 12V power supply.\u003c\/li\u003e\n  \u003cli\u003eTighten terminal screws to ensure secure contacts and avoid short circuits.\u003c\/li\u003e\n  \u003cli\u003eMount the plate in a single-gang box for a flush, finished look.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat audio sources can I play through the HWA-16BT-4CH and how do I switch them?\u003c\/h3\u003e\n\u003cp\u003eThe Herdio plate accepts Bluetooth streams, USB flash drives, a front\/ rear 3.5mm aux\/line input, and a microphone for paging. Bluetooth is ideal for wireless streaming from phones or tablets, while USB and aux inputs provide direct local playback without pairing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBluetooth: wireless playback from smartphones and tablets (approx. 30 ft \/ 10 m range).\u003c\/li\u003e\n  \u003cli\u003eUSB port: play MP3 files directly from a flash drive.\u003c\/li\u003e\n  \u003cli\u003e3.5mm aux: plug in phones, MP3 players, or line-level sources via cable.\u003c\/li\u003e\n  \u003cli\u003eMic input: connect a paging mic to announce audio over connected speakers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the four-channel volume control work for multi-room setups?\u003c\/h3\u003e\n\u003cp\u003eEach channel has an independent volume control on the plate so you can balance levels across rooms or speaker zones without affecting the others. This lets you tailor volume per area while sharing a single audio source and amplifier power distribution.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIndividual rotary controls for each of the four outputs.\u003c\/li\u003e\n  \u003cli\u003eMaintain one source while adjusting local listening levels by zone.\u003c\/li\u003e\n  \u003cli\u003eWorks with passive speakers; speaker impedance and power should match amplifier capability.\u003c\/li\u003e\n  \u003cli\u003eIdeal for small multi-room audio where full matrix switching isn’t required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about installation, compatibility, and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires basic low-voltage speaker wiring and a single-gang electrical box for mounting. The unit is compatible with most passive speakers; however, match speaker impedance and power handling to avoid overdriving the amp. Regularly check terminal connections and keep the ventilation area clear for reliable operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMount in a standard single-gang box and secure with included screws.\u003c\/li\u003e\n  \u003cli\u003eConfirm speaker impedance and combined load fall within amplifier specifications.\u003c\/li\u003e\n  \u003cli\u003eKeep the USB and aux jacks dry and dust-free for consistent connections.\u003c\/li\u003e\n  \u003cli\u003eUse quality speaker wire and label runs for easier system troubleshooting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Herdio Bluetooth Wall Amplifier HWA-16BT-4CH suits homeowners, small business owners, installers, and DIYers who want neat, in-wall distributed audio without a rack of equipment. It’s best for multi-zone background music, paging in small venues, and any situation that benefits from simple source switching, USB playback, and per-zone level control while keeping a low-profile, wall-mounted footprint.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I stream music via Bluetooth while a USB drive is connected?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, Bluetooth streaming and USB playback are supported; the unit switches inputs depending on active source and playback priority.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many speakers can this amplifier drive?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It provides four independent channels for up to four passive speakers or two stereo pairs, with each channel volume-controlled.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Herdio","offers":[{"title":"Default Title","offer_id":48413482549405,"sku":"B0B3MGZFMY","price":58.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/herdio-wall-plate-front-view.jpg?v=1781268235","url":"https:\/\/nexoltic.com\/products\/herdio-bluetooth-wall-amplifier-4-channel-volume-control","provider":"Nexoltic","version":"1.0","type":"link"}