{"product_id":"mcintosh-ma2375-vacuum-tube-integrated-amplifier","title":"McIntosh MA2375 Vacuum Tube Integrated Amplifier 2x75W with KT88 Tubes \u0026 MM\/MC Phono Stage","description":"\u003cp\u003eThe McIntosh MA2375 is an all-analogue vacuum tube integrated amplifier delivering 75 watts per channel into 4, 8 or 16 ohms. Four KT88 output tubes and four 12AT7 drivers feed McIntosh Unity Coupled Circuit output transformers, which is why the rated power is identical across all three impedance taps rather than falling away as the load changes. The preamplifier section uses two 12AX7A and two 12AT7 tubes.\u003c\/p\u003e\n\u003cp\u003eA configurable phono input handles both moving magnet and moving coil cartridges with adjustable loading from 100 ohms to 47 kilohms and capacitance from 50 to 400 pF. A 5-band analogue equaliser with bypass, a high-drive headphone output with HXD crossfeed, and Home Theater PassThru complete the feature set. Power Guard Screen Grid Sensor continuously monitors tube current and Sentry Monitor provides fuse-less short-circuit protection, both housed in a polished stainless steel dual-layer chassis with the dual blue watt meters.\u003c\/p\u003e\n\u003ch3 style=\"color: #0f527f;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e75 watts per channel into 4, 8 or 16 ohms\u003c\/li\u003e\n\u003cli\u003eFour KT88 output tubes and four 12AT7 drivers\u003c\/li\u003e\n\u003cli\u003eTwo 12AX7A and two 12AT7 preamplifier tubes\u003c\/li\u003e\n\u003cli\u003eUnity Coupled Circuit output transformers\u003c\/li\u003e\n\u003cli\u003eConfigurable MM and MC phono input with adjustable loading\u003c\/li\u003e\n\u003cli\u003e5-band analogue equaliser with bypass function\u003c\/li\u003e\n\u003cli\u003eTwo balanced XLR and three unbalanced inputs\u003c\/li\u003e\n\u003cli\u003eHigh-drive headphone output with HXD crossfeed\u003c\/li\u003e\n\u003cli\u003ePower Guard Screen Grid Sensor monitors tube current\u003c\/li\u003e\n\u003cli\u003eSentry Monitor fuse-less short-circuit protection\u003c\/li\u003e\n\u003cli\u003eHome Theater PassThru and subwoofer output\u003c\/li\u003e\n\u003cli\u003ePolished stainless steel chassis with dual blue watt meters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #0f527f;\"\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eThis product comes with a 3-year manufacturer warranty.\u003c\/p\u003e\n\u003ch3 style=\"color: #0f527f;\"\u003eWhy Consider the McIntosh MA2375\u003c\/h3\u003e\n\u003cp\u003eThe Unity Coupled output transformer is the reason this amplifier exists in the form it does. Because 75 watts is available into 4, 8 and 16 ohms alike, loudspeaker matching stops being a compromise, which is unusual for a tube amplifier and is normally where tube designs lose out to solid state. The adjustable MM and MC phono stage also removes the need for an outboard phono preamplifier even with a low-output moving coil cartridge, and the 5-band equaliser offers room correction without stepping outside the analogue signal path.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal For\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVinyl-led systems using moving magnet or moving coil cartridges\u003c\/li\u003e\n\u003cli\u003eListeners wanting tube character without impedance matching compromises\u003c\/li\u003e\n\u003cli\u003ePurely analogue systems with no digital sources required\u003c\/li\u003e\n\u003cli\u003eRooms needing tonal correction inside the analogue path\u003c\/li\u003e\n\u003cli\u003eCollectors of McIntosh tube electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #0f527f;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMcIntosh MA2375 Vacuum Tube Integrated Amplifier\u003c\/li\u003e\n\u003cli\u003eVacuum tubes fitted\u003c\/li\u003e\n\u003cli\u003eHR085 remote control\u003c\/li\u003e\n\u003cli\u003ePower cable\u003c\/li\u003e\n\u003cli\u003eOwner's manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #0f527f;\"\u003eDownloads\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.mcintoshlabs.com\/-\/media\/Files\/mcintoshlabs\/DocumentMaster\/us\/MA2375-OM-24131100.pdf\" rel=\"nofollow noopener\" target=\"_blank\"\u003eOwner's Manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.mcintoshlabs.com\/-\/media\/Files\/mcintoshlabs\/DocumentMaster\/us\/MA2375-Brochure-00.pdf\" rel=\"nofollow noopener\" target=\"_blank\"\u003eProduct Brochure (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #0f527f;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv class=\"ph-spec-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eAmplifier Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Power Output\"\u003ePower Output, 4, 8 and 16 ohms\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e75 W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Dynamic Headroom\"\u003eDynamic Headroom\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1.2 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"THD\"\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e0.5% maximum, 20 Hz - 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Frequency Response\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e20 Hz - 20 kHz (+0, -0.5 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Frequency Response (Extended)\"\u003eFrequency Response, Extended\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e10 Hz - 50 kHz (+0, -3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Damping Factor\"\u003eDamping Factor\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eGreater than 22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Output Transformers\"\u003eOutput Transformers\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eUnity Coupled Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eTube Complement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Output Tubes\"\u003eOutput Tubes\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e4 x KT88\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Driver Tubes\"\u003eDriver Tubes\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e4 x 12AT7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Preamp Tubes\"\u003ePreamplifier Tubes\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e2 x 12AX7A and 2 x 12AT7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eSignal to Noise and Sensitivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"S\/N (Phono)\"\u003eS\/N Ratio, Phono\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e75 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"S\/N (High Level)\"\u003eS\/N Ratio, High Level\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e95 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Sensitivity (Phono)\"\u003eInput Sensitivity, Phono MM and MC\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e3 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Sensitivity (Balanced)\"\u003eInput Sensitivity, Balanced\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e600 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Sensitivity (Unbalanced)\"\u003eInput Sensitivity, Unbalanced\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e300 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Max Output (Balanced)\"\u003eMaximum Output, Balanced\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Max Output (Unbalanced)\"\u003eMaximum Output, Unbalanced\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e8 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eInputs and Outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Balanced Inputs\"\u003eBalanced Inputs\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e2 XLR, 44 kilohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Unbalanced Inputs\"\u003eUnbalanced Inputs\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e3, 22 kilohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Phono\"\u003ePhono Input\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1, switchable MM and MC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Phono Loading\"\u003ePhono Loading\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e100 ohms to 47 kilohms, 50 to 400 pF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Variable Output\"\u003eVariable Preamp Output\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1 unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Subwoofer Output\"\u003eSubwoofer Output\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Headphone Output\"\u003eHeadphone Output\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1\/4 inch, High Drive with HXD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Binding Posts\"\u003eSpeaker Binding Posts\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eSolid Cinch, gold-plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eControl and Protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Equaliser\"\u003eEqualiser\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e5-band analogue with bypass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Power Guard\"\u003ePower Guard\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eScreen Grid Sensor, monitors tube current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Sentry Monitor\"\u003eSentry Monitor\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eFuse-less short-circuit protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Home Theater PassThru\"\u003eHome Theater PassThru\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"RS232\"\u003eRS232 Control Input\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Data Ports\"\u003eRear Panel Data Ports\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e2, with IR sensor inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Power Control\"\u003ePower Control Output\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ph-sec-hd\"\u003e\n\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Type\"\u003eType\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eVacuum tube, all-analogue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Finish\"\u003eFinish\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003ePolished stainless steel, dual-layer chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Dimensions\"\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e452 x 252 x 519 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Standby Consumption\"\u003eStandby Power Consumption\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003eLess than 0.25 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Net Weight\"\u003eNet Weight\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e42.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-label=\"Shipping Weight\"\u003eShipping Weight\u003c\/td\u003e\n\u003ctd data-label=\"Value\"\u003e46.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n.ph-spec-wrap table{width:100%;border-collapse:collapse;font-size:15px;}\n.ph-spec-wrap td{padding:10px 12px;border-bottom:1px solid #e5e5e5;vertical-align:top;}\n.ph-spec-wrap td:first-child{width:42%;font-weight:600;color:#333;}\n.ph-spec-wrap tr.ph-sec-hd td{background:#f2f2f2;font-weight:700;color:#0F527F;text-transform:uppercase;letter-spacing:.03em;font-size:13px;}\n@media screen and (max-width:600px){\n.ph-spec-wrap table,.ph-spec-wrap tbody,.ph-spec-wrap tr,.ph-spec-wrap td{display:block;width:100%;}\n.ph-spec-wrap tr{border-bottom:1px solid #e5e5e5;padding:6px 0;}\n.ph-spec-wrap td{border:none;padding:3px 0;}\n.ph-spec-wrap td:first-child{width:100%;font-size:13px;color:#0F527F;}\n.ph-spec-wrap tr.ph-sec-hd td{padding:8px 10px;}\n}\n\u003c\/style\u003e","brand":"McIntosh Labs","offers":[{"title":"Default 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