{"product_id":"rdl-d-hpa3","title":"RDL D-HPA3 – 3.5 W Wall Amplifier with Headphone Output","description":"\u003ch2\u003eWhat is the RDL D-HPA3?\u003c\/h2\u003e\u003cp\u003eThe RDL D-HPA3 is a white Decora-style wall-mounted audio amplifier that combines a 3.5 W speaker output with a separate front-panel headphone amplifier. It accepts a balanced line-level input that may also be connected unbalanced, making it a practical local listening point for classrooms, training rooms and assistive listening stations.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/d-hpa3.jpg\" alt=\"RDL D-HPA3 front panel\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eThe D-HPA3 mounts in a standard wall box and takes its line input, speaker output and 24 Vdc power on a rear-panel detachable terminal block. A high-efficiency Class D stage drives a 4 or 8 ohm speaker at 3.5 W RMS into 8 ohms or 6.5 W RMS into 4 ohms, while the front-panel mini-jack feeds headphones. Two recessed rear switches set the input sensitivity and choose whether the speaker amplifier mutes when headphones are plugged in, and a single front-panel volume control sets both outputs. The front panel has no illuminated indicators, so the module suits darkened rooms. Power it from a ground-referenced 24 Vdc source such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003eRDL PS-24AX 24 Vdc power supply\u003c\/a\u003e, and finish the installation with an \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-cp-1\"\u003eRDL CP-1 white cover plate\u003c\/a\u003e, a \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-dc-1w\"\u003eDC-1W desktop\/wall chassis\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-smb-1w\"\u003eSMB-1W surface mount box\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual outputs\u003c\/strong\u003e — A rear-panel speaker output and a front-panel mini-jack headphone output are driven from one line input.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone mute option\u003c\/strong\u003e — A recessed switch can turn off the power amplifier automatically when headphones are connected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5 W Class D amplifier\u003c\/strong\u003e — The efficient output stage delivers 3.5 W RMS into 8 ohms or 6.5 W RMS into 4 ohms with negligible heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced or unbalanced input\u003c\/strong\u003e — The bridging line input accepts +4 dBu balanced or -15 dBV unbalanced signals via a sensitivity switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDark-room friendly\u003c\/strong\u003e — The front panel has no illuminated indicators, so it will not distract in theaters or dimmed spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtected all-metal module\u003c\/strong\u003e — Thermal and short-circuit protection are built into an ultra-compact all-metal enclosure.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025742786796,"sku":"D-HPA3","price":259.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/d-hpa3.jpg?v=1793583066","url":"https:\/\/creationnetworks.net\/products\/rdl-d-hpa3","provider":"Creation Networks","version":"1.0","type":"link"}