{"product_id":"atc-r4-150-quad-mono-150w-channel-rack-mount-amplifier","title":"ATC R4-150 - QUAD-MONO 150W\/Channel Rack-Mount Amplifier","description":"\u003ch2\u003eATC R4-150 Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe\u003cstrong\u003e ATC R4-150 Pro\u003c\/strong\u003e is 4-channel 5U rack-mount power amplifier engineered for the most demanding professional recording, mixing, and immersive audio environments.\u003c\/p\u003e\n\u003cp\u003eEach of the four 150 W discrete MOSFET Class A\/B amplifier channels features its own dedicated power transformer, ensuring very low crosstalk and the ability to deliver full rated power with all channels driven.\u003c\/p\u003e\n\u003cp\u003eA class leading input stage provides exceptional common mode rejection across the audio bandwidth, reducing unwanted interference at the input by at least 10,000 x. This makes the amplifier ideally suited to electrically noisy environments such as busy machine rooms and complex multi-room facilities.\u003c\/p\u003e\n\u003cp\u003eWith fan-less convection cooling, the R4-150 Pro operates silently—perfect when installed in control rooms—while thermal and dc offset protection and remote power on\/off trigger inputs allow flexible and reliable installation.\u003c\/p\u003e\n\u003ch3\u003eATC R4-150 Pro Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eQuad-mono 5U\/19” power amplifier engineered for a wide range of demanding pro audio installation applications.\u003c\/li\u003e\n\u003cli\u003e4 x independent high performance 150W grounded-source MOSFET AB power amplifier channels.\u003c\/li\u003e\n\u003cli\u003eVery low noise \u0026amp; crosstalk plus exceptionally high common mode rejection balanced XLR inputs \u0026amp; speaker level audio outputs via Neutrik NL4 connectors.\u003c\/li\u003e\n\u003cli\u003eFront panel mounted bi-colour LEDs display power on\/off and limiter 'active'.\u003c\/li\u003e\n\u003cli\u003eRear panel mounted remote trigger on\/off inputs.\u003c\/li\u003e\n\u003cli\u003eThermal and DC offset protection.\u003c\/li\u003e\n\u003cli\u003eConvection cooled\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eATC R4-150 Pro Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced Input:\u003c\/strong\u003e Rear Panel Mounted Female XLR, pin 2 hot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eInput Impedance:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e 20kΩ (differential).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eCMRR: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u0026gt; 80dB (20hz to 20kHz).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eInput Sensitivity: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e8.9dBu \/ 2.15Vrms (ref. 150W).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eAmplifier type: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eGrounded Source MOSFET Class AB, convection cooled.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eOutput Power:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e 150W (continuous, 0.1% THD, 8Ω all channels driven).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eTHD+N:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e 0.0007% \/ -103dB (1kHz, 20kHz bandwidth, 1dB below full power).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eResidual noise:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e 39uV (20hz to 20kHz).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eS+N\/N :\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e 119dB (ref. 150W unweighted).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eFrequency Response: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u0026lt;5Hz to\u0026gt;400kHz (-3dB).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eCrosstalk: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u0026gt;100dB (20Hz to 20kHz).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eDamping factor: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u0026gt;500.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eLimiter: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eATC Active FET Momentary Gain Reduction, limiter 'active' indicated on front panel.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eOutput Connection:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e NL4 (pins 1+, 1-).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eElectronic Amp Protection:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e Amplifier D.C Offset and over-temperature indicated on rear panel.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003ePower Consumption:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e Standby 4W \/ 4.6VA, Idle 82W \/ 117VA, 1\/8th power 361W \/ 478VA, Full power 956W \/ 1161VA.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eMains Input:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e 220-230V, 110-115V - Factory set. Please observe panel markings and labels.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eHeat Output: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eStandby 13.6 BTU\/hr, Idle 278 BTU\/hr, 1\/8th power 975 BTU\/hr, Full power 1215 BTU\/hr.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eAdditional: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eStandby mode via 1\/8”\/3.5mm Jack socket \u0026amp; 3.5mm right angle header\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eNet Weight: \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e26kg \/ 57.3lbs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\"\u003eProduct Dimensions:\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e (H x W x D): 221 x 483 x 450mm \/ 8\u003c\/span\u003e\u003csup\u003e11\u003c\/sup\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\/\u003c\/span\u003e\u003csub\u003e16\u003c\/sub\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003ex 29 x 17\u003c\/span\u003e\u003csup\u003e23\u003c\/sup\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\/\u003c\/span\u003e\u003csub\u003e32\u003c\/sub\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003einches.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ATC","offers":[{"title":"Default Title","offer_id":58242543780214,"sku":"SATCR4150","price":3665.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0256\/2988\/4462\/files\/R4-150.jpg?v=1783610995","url":"https:\/\/studiocare.com\/products\/atc-r4-150-quad-mono-150w-channel-rack-mount-amplifier","provider":"Studiocare","version":"1.0","type":"link"}