{"product_id":"rdldtpa1a-3-5-w-audio-power-amplifier-7-year-warranty","title":"3.5 W Audio Power Amplifier - 7 Year Warranty","description":"\u003ch4\u003eD-TPA1A 3.5 W Audio Power Amplifier - 7 Year Warranty\u003c\/h4\u003e\u003cp\u003eThe -TPA1A modules are two pair audio amplifier modules compatible with RDL Format A twisted pair products. Each -TPA1A receives stereo audio and 24 Vdc power through a rear-panel RJ45 jack. The left and right audio signals received on pairs B and C of the twisted pair cable are summed to mono and amplified. The amplified output level is set by an internal VCA which is controlled by a front-panel volume control. The VCA attenuator provides years of scratch-free gain adjustment.\u003cbr\u003e\u003cbr\u003eThe -TPA1A circuits are all designed for low power consumption. Amplification is provided by a high-efficiency Class D power stage with audio filtering tailored for crisp pleasant audio clarity. The high-efficiency Class D output stage produces negligible heat for all levels of expected voice or music modulation. When the user reduces the audio level to minimum the class D output stage is switched off. This sleep mode remains active until the user turns up the output level.\u003cbr\u003e\u003cbr\u003eThe output drives either a 4 Ohm or 8 Ohm speaker. The speaker cable connects to the module using a detachable terminal block.\u003cbr\u003e\u003cbr\u003eThe front panel does not include any illuminated indicators making the -TPA1A ideally suited to installation in dark rooms or areas. Installation is simple and quick requiring only the connection of the speaker leads and the twisted pair RJ45.\u003cbr\u003e\u003cbr\u003eThe -TPA1A may be fed and powered from any RDL Format-A sender and is ideal in hospitality installations fed from a sender connected to a TV monitor (for example: FP-TPS4A Audio Sender from TV with fixed audio output level).\u003cbr\u003e\u003cbr\u003eUse the -TPA1A wherever a single speaker user-adjustable wall mounted amplifier is needed. Combine the amplifier with other RDL Format-A products for a cost-effective high-performance audio system.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e• 3.5 Watt RMS Audio Amplifier into 8 Ohms\u003cbr\u003e• 6.5 Watt RMS Audio Amplifier into 4 Ohms\u003cbr\u003e• Output Drives 4 or 8 Ohm Speaker\u003cbr\u003e• Setting Level to Minimum Activates Energy-Saving Sleep Mode\u003cbr\u003e• High-Efficiency Class D Operation\u003cbr\u003e• VCA Level Adjustment for Scratch-Free Long Life\u003cbr\u003e• Input and Power Connection on RJ45\u003cbr\u003e• Connects to Format-A Sender using Twisted-Pair Cable\u003cbr\u003e• Powered from RDL Twisted Pair Format-A Sender\u003cbr\u003e• Speaker Output Connection on Detachable Terminal Block\u003cbr\u003e• Ultra-Compact All Metal Construction\u003cbr\u003e• Thermal and Short-Circuit Protection\u003cbr\u003e• 7 Year Warranty\u003c\/p\u003e\u003ctable class=\"features\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"feature\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 Year Warranty  \u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Radio Design Labs","offers":[{"title":"Default Title","offer_id":63660861489482,"sku":"RDLDTPA1A","price":254.87,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/6896\/1354\/files\/d-tpa1a.jpg?v=1791028257","url":"https:\/\/crystaltechgroup.myshopify.com\/products\/rdldtpa1a-3-5-w-audio-power-amplifier-7-year-warranty","provider":"Crystal Tech","version":"1.0","type":"link"}