{"product_id":"dynacord-u120-1-us-120w-single-channel-power-amplifier","title":"Dynacord U120:1-US – 120W Single-Channel Power Amplifier","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Dynacord U120:1 is a 120 W single-channel power amplifier for fixed commercial audio systems that already have a source mixer or DSP front end. As a 70V power amplifier supporting 70 V, 100 V, 4 ohm, and 8 ohm loads, it serves as a compact distributed audio amplifier for background music and paging in retail, hospitality, and meeting spaces. With rear-panel controls and a half-rack chassis, it is a set-and-forget install amplifier for spaces where front-panel access should be restricted.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe U120:1 is a power-amplifier-only member of the Dynacord U Series, delivering 120 W of Class-D output without an onboard mixer, making it ideal where a separate mixer, DSP, or matrix supplies the program signal. It accepts one balanced line input on a 3-pin Eurostyle connector and one unbalanced line input on RCA (summed to mono), plus a dedicated EMG priority input that takes line-level or 100 V signals so emergency and all-call messages override program audio. The output stage is DIP-selectable for 4 ohm, 8 ohm, 70 V, and 100 V, letting the same unit drive high-Z distributed ceiling systems or low-Z surface speakers. Gain, bass, and treble controls are located on the rear panel for a secure set-and-forget configuration, with a clean front panel that prevents tampering in public-facing installations. A four-stage temperature-controlled fan keeps the unit quiet at low output and cool under sustained load, and remote power standby reduces idle consumption for energy-conscious deployments. Built for continuous fixed-install use, this Dynacord U Series amplifier integrates cleanly downstream of paging controllers and audio DSP. Browse the full \u003ca href=\"https:\/\/creationnetworks.net\/collections\/dynacord\"\u003eDynacord collection\u003c\/a\u003e at Creation Networks, or for an install amplifier with onboard DSP see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/dynacord-c1300fdi-dsp-power-amplifier\"\u003eDynacord C1300FDi DSP power amplifier\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e120 W Class-D Power Amplifier\u003c\/strong\u003e — Single-channel Class-D output delivers 120 W with high efficiency and low heat for continuous commercial operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70 V \/ 100 V and Low-Z Output\u003c\/strong\u003e — Selectable 4 ohm, 8 ohm, 70 V, and 100 V operation supports both distributed high-Z and direct low-Z loudspeaker systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced and Unbalanced Line Inputs\u003c\/strong\u003e — A balanced 3-pin Eurostyle input and an unbalanced RCA input accept signal from mixers, DSP, and matrix systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMG Priority Override\u003c\/strong\u003e — A dedicated emergency input accepts line-level or 100 V signals with level selection so critical messages take precedence over program audio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear-Panel Set-and-Forget Controls\u003c\/strong\u003e — Gain, bass, and treble adjustments sit on the rear panel, leaving a clean front face that prevents tampering in public spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Stage Cooling\u003c\/strong\u003e — A temperature-controlled four-stage fan keeps the amplifier quiet at low levels and stable under sustained load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitchable 120 Hz High-Pass Filter\u003c\/strong\u003e — A selectable HPF removes unwanted low-frequency content to protect speakers and improve speech clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-Rack 1U Chassis\u003c\/strong\u003e — Included brackets allow single, side-by-side rack, table-top, or under-counter mounting, with two units fitting one rack space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Power Standby\u003c\/strong\u003e — Contact-closure remote power off reduces standby consumption to 1.25 W for energy-conscious installations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConference rooms\u003c\/li\u003e\n\u003cli\u003eCommercial meeting spaces\u003c\/li\u003e\n\u003cli\u003eMulti-purpose rooms\u003c\/li\u003e\n\u003cli\u003eTraining rooms\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment spaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;min-width:520px;\"\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated output power (IHF-A-202)\u003c\/td\u003e\n\u003ctd\u003e120 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput modes\u003c\/td\u003e\n\u003ctd\u003e4 ohm, 8 ohm, 70 V, 100 V (DIP selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput stage topology\u003c\/td\u003e\n\u003ctd\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax output voltage (1 kHz, THD 0.5%, no load)\u003c\/td\u003e\n\u003ctd\u003e22 VRMS (4 ohm) \/ 32 VRMS (8 ohm) \/ 71 VRMS (70 V) \/ 102 VRMS (100 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e1 balanced line (3-pin Eurostyle), 1 unbalanced line (RCA), EMG priority input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e500 mV (balanced) \/ 250 mV (unbalanced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response (any input to output, -3 dB)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;20 Hz - 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDistortion\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.5% at rated output power, 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-noise ratio (A-weighted)\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEqualization\u003c\/td\u003e\n\u003ctd\u003eBass +\/-12 dB \/ 100 Hz; Treble +\/-12 dB \/ 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter\u003c\/td\u003e\n\u003ctd\u003eSwitchable 120 Hz, 12 dB\/oct (permanent 20 Hz lo-cut)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoudspeaker connector\u003c\/td\u003e\n\u003ctd\u003e4-pin Eurostyle (2-pin LoZ, 2-pin HiZ)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMains power supply\u003c\/td\u003e\n\u003ctd\u003e100 - 240 VAC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby power consumption\u003c\/td\u003e\n\u003ctd\u003e1.25 W (remote off active)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eFour-stage fan (Off \/ Slow \/ Medium \/ Fast)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd\u003e44.2 x 218 x 210 mm (1.74 x 8.6 x 8.26 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e1.8 kg (3.96 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-5 C to 45 C (23 F to 113 F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIEC protection class\u003c\/td\u003e\n\u003ctd\u003eClass I (grounded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cp style=\"font-size:0.85em;\"\u003eSpecifications sourced from the Dynacord U120:1 datasheet. Data subject to change without notice.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDoes the U120:1 support both 70 V and 100 V distributed speaker systems?\u003c\/strong\u003e\u003cbr\u003eYes. The output is DIP-switch selectable for 4 ohm, 8 ohm, 70 V, and 100 V, so it works with high-Z distributed ceiling and pendant systems as well as low-Z surface speakers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this model include a mixer?\u003c\/strong\u003e\u003cbr\u003eNo. The U120:1 is a power amplifier with one balanced and one unbalanced line input plus an EMG priority input. It is intended to sit downstream of a mixer, DSP, or paging controller. For an integrated mixer, see the U120:1M model.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy are the controls on the rear panel?\u003c\/strong\u003e\u003cbr\u003eGain, bass, and treble are placed on the rear panel as a set-and-forget design, leaving a clean front face that prevents accidental or unauthorized adjustment in public-facing installations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it handle emergency announcements?\u003c\/strong\u003e\u003cbr\u003eThe dedicated EMG priority input accepts line-level or 100 V signals with selectable level and overrides program audio so critical messages are heard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the amplifier mounted in an equipment rack?\u003c\/strong\u003e\u003cbr\u003eThe half-rack 1U chassis ships with brackets for single rack-mount, side-by-side mounting (two units per rack space), table-top, or under-counter installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat warranty and support are available?\u003c\/strong\u003e\u003cbr\u003eDynacord products carry the manufacturer's standard warranty. Creation Networks provides pre-sale system design guidance and post-sale support for commercial AV deployments. Contact our team through the Creation Networks site for documentation and assistance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this model suitable for 24\/7 operation?\u003c\/strong\u003e\u003cbr\u003eYes. The Class-D design, four-stage cooling, protection circuitry, and remote standby make it appropriate for continuous fixed-install commercial use.\u003c\/p\u003e","brand":"Dynacord","offers":[{"title":"Default Title","offer_id":47741652828396,"sku":"U120:1-US","price":359.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/DYN-U120-1-US_0d6fbcbe-c2f1-41fa-9bd0-e2d62c657264.jpg?v=1781711978","url":"https:\/\/creationnetworks.net\/products\/dynacord-u120-1-us-120w-single-channel-power-amplifier","provider":"Creation Networks","version":"1.0","type":"link"}