{"product_id":"the-signal-forge-tpa3116d2-class-d-amplifier","title":"The Signal Forge | 2 x 50W TPA3116D2 Class-D Amplifier","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp style=\"font-size:19px;font-weight:600;line-height:1.6;\"\u003eMost amplifiers add something. A little warmth, a little haze, a little of themselves.\u003c\/p\u003e\n\u003cp style=\"line-height:1.85;\"\u003eThe Signal Forge is built to add nothing. At its centre sits the Texas Instruments TPA3116D2, a class-D power stage that switches at high frequency and then filters the result back into an audio band smooth enough to sit behind a pair of honest bookshelf speakers. Two channels, fifty watts each into four ohms, twenty hertz to twenty kilohertz within one decibel, and distortion measured at or below 0.04 percent. The number that matters most is the one between tracks: with nothing playing, the noise floor sits below 98 dB, which is to say you hear the room, not the machine.\u003c\/p\u003e\n\u003cp style=\"line-height:1.85;\"\u003eThe chassis is milled aluminium, which does two jobs at once. It shields the input stage from the switching noise that plagues plastic-cased mini amplifiers, and it conducts heat away from the chip so the amplifier holds its composure through a long evening rather than throttling after forty minutes. Input is a pair of RCA jacks; output is banana terminals that accept bare wire, spades, or plugs. There is no menu, no app, no firmware: a volume dial and a power switch, because a hi-fi system should not require an update.\u003c\/p\u003e\n\u003cp style=\"line-height:1.85;\"\u003eIt is the amplifier for the person who already owns good speakers and suspects the weak link is upstream. It also happens to be the smallest component in the chain, which means it disappears behind a desk, inside a cabinet, or on a shelf beside a turntable without asking for visual permission.\u003c\/p\u003e\n\u003cp style=\"line-height:1.85;\"\u003e\u003cem\u003eFidelity is not what a machine adds. It is what it has the discipline to leave alone.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003chr style=\"margin:24px 0;border:0;border-top:1px solid #ececec;\"\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3 style=\"font-size:17px;margin:18px 0 10px 0;\"\u003eWhat Makes It Quiet\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eTPA3116D2 power stage\u003c\/strong\u003e — Texas Instruments class-D chip delivering 50W per channel into 4 ohms with 0.04 percent THD\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eSilent between tracks\u003c\/strong\u003e — Signal-to-noise ratio of 98 dB or better, so idle hiss does not sit under quiet passages\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eMilled aluminium chassis\u003c\/strong\u003e — Shields the input stage from switching noise and conducts heat away from the chip\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003e12 to 24V DC input range\u003c\/strong\u003e — Runs from the supplied 19V 4.74A adapter or a clean DC supply of your choosing\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003e2 to 8 ohm compatibility\u003c\/strong\u003e — Drives bookshelf speakers, desktop monitors, and 8 ohm vintage cabinets without complaint\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eBanana and bare-wire output\u003c\/strong\u003e — Speaker terminals accept plugs, spades, or bare cable with a solid clamp\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eTwo-year warranty\u003c\/strong\u003e — Covered for 24 months, with a design simple enough that there is very little to fail\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3 style=\"font-size:17px;margin:18px 0 10px 0;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003ePower amplifier chip\u003c\/strong\u003e — Texas Instruments TPA3116D2\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e — 2 channel stereo, class D\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eMaximum output\u003c\/strong\u003e — 50W x 2 into 4 ohms\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eFrequency response\u003c\/strong\u003e — 20Hz to 20kHz, within 1 dB\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eTotal harmonic distortion\u003c\/strong\u003e — 0.04 percent or lower\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eSignal-to-noise ratio\u003c\/strong\u003e — 98 dB or higher\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eInput sensitivity\u003c\/strong\u003e — 280mV or lower\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eInput mode\u003c\/strong\u003e — RCA stereo pair\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eSpeaker terminals\u003c\/strong\u003e — Banana jacks, bare wire and spade compatible\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eInput power\u003c\/strong\u003e — 19V 4.74A adapter supplied, DC range 12 to 24V at 4.5 to 8A\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eLoad impedance\u003c\/strong\u003e — 2 to 8 ohms\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #f2f2f2;line-height:1.7;\"\u003e\n\u003cstrong\u003eChassis and warranty\u003c\/strong\u003e — Solid aluminium case, 24 month manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3 style=\"font-size:17px;margin:22px 0 10px 0;\"\u003eWhere It Earns Its Place\u003c\/h3\u003e\n\u003cp style=\"line-height:1.85;\"\u003eThe Signal Forge suits a desk system where a pair of passive bookshelf speakers is currently idle because the old receiver is too large, too hot, or too noisy. It suits a turntable or DAC feeding a small room where fifty honest watts is more than enough. It suits the workshop or studio where a compact amplifier drives in-ceiling or wall speakers off a 19V supply, and the office where a TV, Echo Dot, or phone feeds background audio through a pair that deserves better than a Bluetooth box. In every case the logic is the same: spend the budget on speakers and the source, and let a quiet, well-measured amplifier stay out of the way.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3 style=\"font-size:17px;margin:22px 0 10px 0;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;\"\u003e\u003cstrong\u003eQ: Does it come with a power supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.75;\"\u003eA: Two variants exist. The With Power version ships with the matching 19V 4.74A adapter and cord, ready to plug in. The No Power version is the amplifier alone for buyers who already own a suitable 12 to 24V DC supply rated at 4.5A or more. Ordering the No Power version without a supply means the amplifier has nothing to run it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;\"\u003e\u003cstrong\u003eQ: Can it drive 8 ohm speakers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.75;\"\u003eA: Yes. The amplifier is rated for loads between 2 and 8 ohms. Output power falls with higher impedance, so an 8 ohm pair will receive roughly half the wattage of a 4 ohm pair, which is still ample for near-field and bookshelf listening.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;\"\u003e\u003cstrong\u003eQ: Is it powerful enough for a living room?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.75;\"\u003eA: For efficient bookshelf or stand-mount speakers in a normal room, yes. Fifty watts per channel into 4 ohms produces realistic levels without strain. Very inefficient floor-standing speakers in a large open room are better served by a larger amplifier with more current delivery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;\"\u003e\u003cstrong\u003eQ: Why is there no Bluetooth or tone control?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.75;\"\u003eA: Because every added stage is another opportunity to colour or degrade the signal. This is deliberately a power amplifier: a volume dial, a pair of inputs, and speaker terminals. Source selection and tone shaping belong upstream, where you can choose the quality of the components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;\"\u003e\u003cstrong\u003eQ: How should it be wired?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.75;\"\u003eA: Connect the source to the RCA inputs, connect speakers to the banana terminals observing polarity, then power the unit and raise the volume gradually from zero. Never connect or disconnect speaker cables while the amplifier is powered, and never short the output terminals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px 0;\"\u003e\u003cstrong\u003eQ: Does it run hot?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.75;\"\u003eA: Class-D amplifiers are efficient, so normal operation is warm rather than hot. Keep the aluminium chassis in open air rather than sealed in a cupboard, and if you use a supply above 19V ensure it is well regulated. Thermal shutdown protects the chip if airflow is inadequate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sbe0a3711c2f34d12a27b05e8984689bfm.webp\" style=\"max-width:100%;height:auto;margin:10px 0;border-radius:6px;\" alt=\"The Signal Forge TPA3116D2 stereo class-D amplifier\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S0f598931037a46f4aa0e9a8f1d51d450M.webp\" style=\"max-width:100%;height:auto;margin:10px 0;border-radius:6px;\" alt=\"The Signal Forge TPA3116D2 stereo class-D amplifier\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sb66dcbe74aac4ca697e1c92b8b110335K.webp\" style=\"max-width:100%;height:auto;margin:10px 0;border-radius:6px;\" alt=\"The Signal Forge TPA3116D2 stereo class-D amplifier\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sba1643e35a1248d6bd005bfd20e98fe5R.webp\" style=\"max-width:100%;height:auto;margin:10px 0;border-radius:6px;\" alt=\"The Signal Forge TPA3116D2 stereo class-D amplifier\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sc7087fc8725042b2baf23de6c845aa0dT.webp\" style=\"max-width:100%;height:auto;margin:10px 0;border-radius:6px;\" alt=\"The Signal Forge TPA3116D2 stereo class-D amplifier\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Se01b48fd226c4ba88c56911cc3e36279r.webp\" style=\"max-width:100%;height:auto;margin:10px 0;border-radius:6px;\" alt=\"The Signal Forge TPA3116D2 stereo class-D amplifier\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S1c0052685e494b2397b06fe0beae73a1u.webp\" style=\"max-width:100%;height:auto;margin:10px 0;border-radius:6px;\" alt=\"The Signal Forge TPA3116D2 stereo class-D amplifier\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S2b73520781ee44cfb8255506c2768d2dE.webp\" style=\"max-width:100%;height:auto;margin:10px 0;border-radius:6px;\" alt=\"The Signal Forge TPA3116D2 stereo class-D amplifier\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sebb5133ae4244e48b875aa89f9802e70V.webp\" style=\"max-width:100%;height:auto;margin:10px 0;border-radius:6px;\" alt=\"The Signal Forge TPA3116D2 stereo class-D amplifier\" loading=\"lazy\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"The Signal Forge | 2 x 50W TPA3116D2 Class-D Amplifier\",\n  \"image\": [\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sbe0a3711c2f34d12a27b05e8984689bfm.webp\"],\n  \"description\": \"Two channel class-D stereo amplifier built on the TPA3116D2 chip, 50W per channel into 4 ohms, 20Hz to 20kHz, in a milled aluminium chassis.\",\n  \"sku\": \"V1.0-TPA3116D2\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"EastSupplier\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/eastsupplier.com\/products\/the-signal-forge-tpa3116d2-class-d-amplifier\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"118.27\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\"@type\": \"Organization\", \"name\": \"EastSupplier\"}\n  },\n  \"aggregateRating\": {\"@type\": \"AggregateRating\", \"ratingValue\": \"4.8\", \"reviewCount\": \"4\"}\n}\n\u003c\/script\u003e","brand":"East Supplier Platform","offers":[{"title":"Black No Power \/ China Mainland","offer_id":48841752248543,"sku":"1005002426790142-Black No Power-China Mainland","price":118.27,"currency_code":"USD","in_stock":true},{"title":"Silver With Power \/ China Mainland","offer_id":48841752477919,"sku":"1005002426790142-Silver With Power-China Mainland","price":161.14,"currency_code":"USD","in_stock":true},{"title":"Silver No Power \/ China Mainland","offer_id":48841752608991,"sku":"1005002426790142-Silver No Power-China Mainland","price":118.27,"currency_code":"USD","in_stock":true},{"title":"Black With Power \/ China Mainland","offer_id":48841752805599,"sku":"1005002426790142-Black With Power-China Mainland","price":161.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sbe0a3711c2f34d12a27b05e8984689bfm.webp?v=1776011424","url":"https:\/\/eastsupplier.cn\/products\/the-signal-forge-tpa3116d2-class-d-amplifier","provider":"EastSupplier Platform","version":"1.0","type":"link"}