{"product_id":"jb-systems-1u-classd-amplifier-2x400w-4ohms","title":"JB SYSTEMS 1U classD amplifier 2x400W 4ohms","description":"\u003ch3\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe AMP 400.2 Mk2 is the Mark II version of the well-known JB Systems AMP 400.2 professional power amplifier. It is a 2-channel Class-D amplifier delivering 2 x 250 W RMS into 8 ohms and 2 x 450 W RMS into 4 ohms. Externally, it retains the particularly compact dimensions of the previous model, with a standard 19\" rack width and 1 U height (44 mm). Internally, however, the layout has been completely re-engineered to improve reliability and heat dissipation; to this end, three fans are used to maintain controlled temperatures. The design is based on the use of an extremely efficient soft-start switching power supply. It offers three operating modes: stereo, mono, or bridged. Stereo mode is the conventional one where both channels operate separately. Mono mode is essentially identical to stereo mode but with the inputs of both channels linked so that the output will be mono; in this case, only the LEFT channel input can be used to drive both output channels with the same signal. Finally, bridge mode combines the output stages for a power of 900 W into 8 ohms. A peak limiter prevents signal distortion, while a low-cut filter cuts low frequencies at 75 Hz with a very steep 24 dB\/oct filter. The input sensitivity is variable between three values: 0.775 V \/ 1.0 V \/ 1.44 V to adapt to any source. There is also a rear switch for floating ground.\u003c\/p\u003e\n\n\u003cp\u003eTo prevent unauthorized persons from changing input levels, a plastic cover (included) can be installed with 4 screws over the front controls.\u003c\/p\u003e\n\n\u003cp\u003eThe amplifier's inputs are balanced XLR, there is a link output for connecting another power amplifier in a daisy chain, while the outputs are on speakON connectors. Protections against short circuits, high temperatures, and overloads.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\u003ctable border=\"1\" id=\"product-attribute-specs-table\" style=\"width: 700px;\"\u003e\n\n\t\u003ctbody\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eGeneral : Dimensions (cm)\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e48.3 x 24 x 4.4\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eGeneral : Weight (kg)\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e4.5\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eGeneral : Color\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003eblack\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eGeneral : Powerinput\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003eAC 240V, 50Hz\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eGeneral : Energy Label\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003eNo\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eGeneral : Display\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003eNo\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eGeneral : Fixation\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e19\" rack mountable\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eGeneral : RU\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e1U\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eGeneral : IP rating\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003eindoor\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eAudio : frequency range\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e20 Hz - 20000 Hz\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eAudio : S\/N ratio (\u0026gt; dB)\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e100\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eAudio : max. output channels\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e2\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eAudio : Wrms 4Ω stereo, per channel\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e450\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eAudio : Wrms 8Ω stereo, per channel\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e250\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eAudio : Wrms 8Ω bridge\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e900\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eAudio : functions\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003eadjustable crossover, bridge mode, limiter\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eConnections : input\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e3 pin XLR, IEC\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\t\u003ctr\u003e\n\n\t\t\t\u003cth\u003eConnections : output\u003c\/th\u003e\n\n\t\t\t\u003ctd\u003e3 pin XLR, speakon\u003c\/td\u003e\n\n\t\t\u003c\/tr\u003e\n\n\t\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\u003c\/ul\u003e","brand":"JB SYSTEMS","offers":[{"title":"Default Title","offer_id":53993822617933,"sku":"B08129","price":334.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/0643\/6173\/files\/171758-large_default.jpg?v=1779945583","url":"https:\/\/musicdelivery.net\/en\/products\/jb-systems-1u-classd-amplifier-2x400w-4ohms","provider":"Music Delivery","version":"1.0","type":"link"}