{"product_id":"quest-commercial-pb-4120d-4-channel-4-x-120-w-class-d-power-amplifier","title":"Quest Commercial PB-4120D: 4-Channel 4 x 120 W Class-D Power Amplifier","description":"\u003ch2 class=\"tabHeader\"\u003eAbout the Quest Commercial PB-4120D: 4-Channel 4 x 120 W Class-D Power Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe Quest Commercial PB-4120 and 4300D are versatile and efficient Class-D, digital multi-Channel Power Amplifiers of advanced design, able to drive 70 \/ 100 V line loudspeaker systems directly as well as low impedance 4 \/ 8 ohms speaker loads.  The PB-4120D can deliver 120 W RMS per-Channel, and the PB-4300D can deliver 300 W RMS per-Channel.  The PB-series advanced technology, clear sound, lightweight and reliable performance makes it ideal for any distributed sound system installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Amplifiers deliver either 120 \/ 300 W of clean power per-Channel at 70 \/ 100 V and 4 ohms\u003c\/li\u003e\n\u003cli\u003eClass-D Amplifier operating at 85 % efficiency using switching power supplies. The PB-series Amplifiers generate virtually no heat, thanks to their low current draw.\u003c\/li\u003e\n\u003cli\u003eBuilt in 70 \/ 100 V output transformers through flat frequency response from 40 hz to 20 kHz provide constant voltage for distributed speaker systems.\u003c\/li\u003e\n\u003cli\u003eIndependent input level controls for each-Channel allow precise adjustments.\u003c\/li\u003e\n\u003cli\u003eClean, crisp sound, Impressive audio specifications such as \u0026lt; 0.3 % THD, dynamic range of 105 dB, crosstalk of \u0026gt; 70 dB, and frequency response of 50 hz - 18 kHz guarantee ultra clean sound quality.\u003c\/li\u003e\n\u003cli\u003eLED signal indicators for each-Channel continuously display Power output levels and allow you to correct for overloading (clipping) conditions.\u003c\/li\u003e\n\u003cli\u003eForced air cooling via internal fan provides reliable performance without thermal and overheating problems.\u003c\/li\u003e\n\u003cli\u003eInput and output connections for each-Channel are made using euro block connectors to accommodate both balanced and unbalanced signals sources and which accept 12 gauges wire.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCSA \/ UL approved.\u003c\/li\u003e\n\u003cli\u003eClass-D \u0026amp; switching Power supply: PB-4120D @ 120 V \/ 5.8 A; PB-4300D @ 120 V \/ 13.9 A\u003c\/li\u003e\n\u003cli\u003eThe PB-series Amplifiers can be mounted in any standard 19\" rack (taking just 2 rack spaces), making it easy to integrate into any fixed or traveling PA rig.\u003c\/li\u003e\n\u003cli\u003eHoused in a double rack space (2 RU) 19\" rack mounting housing.\u003c\/li\u003e\n\u003cli\u003e3 years warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRated Power (1 kHz, 1 % THD + N ): 120 W x 4 (70 \/ 100 V); 60 W x 4 (8 Ω); 120 W x 4 (4 Ω) \u003c\/li\u003e\n\u003cli\u003eOutput impedance: 4 Ω, 100 V (83.3 Ω) \/ 70 V (40.8 Ω)\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 1 VRMS\u003c\/li\u003e\n\u003cli\u003eInput impedance: 10 kΩ balanced\u003c\/li\u003e\n\u003cli\u003eFrequency response: 50 hz - 18 kHz\u003c\/li\u003e\n\u003cli\u003eTotal harmonic distortion + noise: \u0026lt; 0.3 %\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio: \u0026gt; 90 dB\u003c\/li\u003e\n\u003cli\u003eCommon model rejection: 70 dB\u003c\/li\u003e\n\u003cli\u003eCrosstalk: \u0026gt; 70 dB\u003c\/li\u003e\n\u003cli\u003eHigh pass filter switch: 400 hz\u003c\/li\u003e\n\u003cli\u003eProtection: DC short circuit, overheating and load\u003c\/li\u003e\n\u003cli\u003eCooling system: temperature controlled fan\u003c\/li\u003e\n\u003cli\u003eAmplifier technology: Class-D\u003c\/li\u003e\n\u003cli\u003ePower supply: 120 V AC, 50 \/ 60 hz\u003c\/li\u003e\n\u003cli\u003eWeight (net): 20.3 lbs (9.2 kg)\u003c\/li\u003e\n\u003cli\u003eUnit dimension (W x H x D): 19 x 14.8 x 3.5\" (483 x 375 x 89 mm)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Quest Commercial","offers":[{"title":"Default Title","offer_id":43028321108035,"sku":"PB-4120D","price":1029.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2521\/5218\/files\/PB-4120D.jpg?v=1773028812","url":"https:\/\/azelectronics.ca\/products\/quest-commercial-pb-4120d-4-channel-4-x-120-w-class-d-power-amplifier","provider":"AZ Electronics","version":"1.0","type":"link"}