{"product_id":"mcintosh-ma2375-2-channel-vacuum-tube-integrated-amplifier","title":"McIntosh MA2375 2-Channel Vacuum Tube Integrated Amplifier","description":"\u003ch1\u003eMcIntosh MA2375 Vacuum Tube Integrated Amplifier\u003c\/h1\u003e\u003ch3\u003e75 Wpc all-tube integrated amplifier with Unity Coupled output transformers, configurable phono input, and five-band analog equalizer\u003c\/h3\u003e\u003cp\u003eThe McIntosh MA2375 is an all-analog integrated amplifier combining a vacuum tube preamplifier and vacuum tube power amplifier in a single chassis. Its output stage uses four KT88 power tubes and four 12AT7 driver tubes to deliver 75 Wpc into 4-, 8-, or 16-ohm loudspeakers, while the preamplifier section uses two 12AX7A and two additional 12AT7 tubes.\u003c\/p\u003e\u003cp\u003eMcIntosh Unity Coupled Circuit output transformers allow the MA2375 to deliver its full rated power into 4-, 8-, or 16-ohm loads. The amplifier also incorporates Power Guard Screen Grid Sensor technology, which monitors current through the KT88 output tubes and dynamically adjusts the input signal when necessary to keep the tubes operating within safe limits.\u003c\/p\u003e\u003cp\u003eSix analog inputs include two balanced, three unbalanced, and one phono input that can be configured for either Moving Coil or Moving Magnet cartridges. The phonostage provides adjustable gain, capacitance, and resistance loading, allowing it to accommodate a broad range of cartridges without requiring an external phonostage.\u003c\/p\u003e\u003cp\u003eA five-band analog equalizer provides additional tonal adjustment, while an unbalanced preamp output and dedicated subwoofer output expand system flexibility. McIntosh High Drive headphone circuitry with Headphone Crossfeed Director is included for private listening, and Home Theater PassThru allows the MA2375 to be incorporated into a multichannel system.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003ch4\u003eAll-Vacuum-Tube Design\u003c\/h4\u003e\u003cp\u003eThe MA2375 uses vacuum tubes in both its preamplifier and power amplifier sections. Four KT88 output tubes and four 12AT7 driver tubes handle power amplification, while two 12AX7A and two 12AT7 tubes are used in the preamplifier stage.\u003c\/p\u003e\u003ch4\u003e75 Wpc Into 4, 8, or 16 Ohms\u003c\/h4\u003e\u003cp\u003eMcIntosh Unity Coupled Circuit output transformers allow the amplifier to deliver its full rated 75 Wpc into 4-, 8-, or 16-ohm loudspeaker loads.\u003c\/p\u003e\u003ch4\u003ePower Guard Screen Grid Sensor\u003c\/h4\u003e\u003cp\u003ePower Guard Screen Grid Sensor technology continuously monitors current through the KT88 output tubes and dynamically attenuates the input signal if necessary to keep the tubes operating within safe limits.\u003c\/p\u003e\u003ch4\u003eConfigurable Phonostage\u003c\/h4\u003e\u003cp\u003eThe dedicated phono input can be configured for either Moving Coil or Moving Magnet cartridges, with adjustable gain, capacitance, resistance loading, and RIAA equalization.\u003c\/p\u003e\u003ch4\u003eFive-Band Analog Equalizer\u003c\/h4\u003e\u003cp\u003eA five-band analog equalizer provides adjustable tonal shaping for recordings, loudspeakers, or room acoustics, with Tone Bypass available when no correction is required.\u003c\/p\u003e\u003ch4\u003eSubwoofer Output\u003c\/h4\u003e\u003cp\u003eA dedicated subwoofer output simplifies the addition of a powered subwoofer to extend low-frequency performance.\u003c\/p\u003e\u003ch4\u003eHigh Drive Headphone Amplifier\u003c\/h4\u003e\u003cp\u003eThe front-panel headphone output incorporates McIntosh High Drive circuitry and Headphone Crossfeed Director technology for dedicated headphone listening.\u003c\/p\u003e\u003ch4\u003eSentry Monitor\u003c\/h4\u003e\u003cp\u003eSentry Monitor provides fuse-less short-circuit protection, disengaging the amplifier if operating conditions exceed safe limits and automatically restoring operation when conditions return to normal.\u003c\/p\u003e\u003ch4\u003eHome Theater PassThru\u003c\/h4\u003e\u003cp\u003eHome Theater PassThru allows the MA2375 to be incorporated into a multichannel system while retaining its normal role as a dedicated two-channel integrated amplifier.\u003c\/p\u003e\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMcIntosh MA2375 Vacuum Tube Integrated Amplifier\u003c\/li\u003e\n\u003cli\u003eRemote control\u003c\/li\u003e\n\u003cli\u003eAC power cord\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cp\u003e\u003cb\u003eType:\u003c\/b\u003e Vacuum tube integrated amplifier\u003c\/p\u003e\u003cp\u003e\u003cb\u003eChannels:\u003c\/b\u003e 2\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePower Output:\u003c\/b\u003e 75 Wpc into 4, 8, or 16 ohms\u003c\/p\u003e\u003cp\u003e\u003cb\u003eRated Power Band:\u003c\/b\u003e 20 Hz–20 kHz\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFrequency Response:\u003c\/b\u003e 20 Hz–20 kHz, +0\/–0.5 dB; 10 Hz–50 kHz \u003cb\u003e(+0\/–3 dB)\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eTotal Harmonic Distortion:\u003c\/b\u003e 0.5% maximum, 250 mW to rated power, 20 Hz–20 kHz\u003c\/p\u003e\u003cp\u003e\u003cb\u003eDynamic Headroom:\u003c\/b\u003e 1.2 dB\u003c\/p\u003e\u003cp\u003e\u003cb\u003eVacuum Tubes:\u003c\/b\u003e 4 × KT88, 6 × 12AT7, 2 × 12AX7A\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePhono Input Sensitivity:\u003c\/b\u003e 3 mV\u003c\/p\u003e\u003cp\u003e\u003cb\u003eHigh-Level Input Sensitivity:\u003c\/b\u003e 600 mV balanced; 300 mV unbalanced\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePhono Signal-to-Noise Ratio:\u003c\/b\u003e 75 dB Moving Coil; 75 dB Moving Magnet\u003c\/p\u003e\u003cp\u003e\u003cb\u003eHigh-Level Signal-to-Noise Ratio:\u003c\/b\u003e 95 dB\u003c\/p\u003e\u003cp\u003e\u003cb\u003eInput Impedance:\u003c\/b\u003e 44 kΩ balanced; 22 kΩ unbalanced\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePhono Loading:\u003c\/b\u003e 100 ohms–47 kΩ resistance; 50–400 pF capacitance\u003c\/p\u003e\u003cp\u003e\u003cb\u003eDamping Factor:\u003c\/b\u003e Greater than 22\u003c\/p\u003e\u003cp\u003e\u003cb\u003eMaximum Output:\u003c\/b\u003e 16 V balanced; 8 V unbalanced\u003c\/p\u003e\u003cp\u003e\u003cb\u003eBalanced Inputs:\u003c\/b\u003e 2\u003c\/p\u003e\u003cp\u003e\u003cb\u003eUnbalanced Inputs:\u003c\/b\u003e 3\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePhono Inputs:\u003c\/b\u003e 1, configurable for Moving Coil or Moving Magnet\u003c\/p\u003e\u003cp\u003e\u003cb\u003eUnbalanced Variable Outputs:\u003c\/b\u003e 1\u003c\/p\u003e\u003cp\u003e\u003cb\u003eSubwoofer Outputs:\u003c\/b\u003e 1\u003c\/p\u003e\u003cp\u003e\u003cb\u003eHeadphone Output:\u003c\/b\u003e 1\/4\" High Drive with Headphone Crossfeed Director\u003c\/p\u003e\u003cp\u003e\u003cb\u003eTone Controls:\u003c\/b\u003e Five-band analog equalizer\u003c\/p\u003e\u003cp\u003e\u003cb\u003eTone Bypass:\u003c\/b\u003e Yes\u003c\/p\u003e\u003cp\u003e\u003cb\u003eInput Level Matching:\u003c\/b\u003e Yes\u003c\/p\u003e\u003cp\u003e\u003cb\u003eHome Theater PassThru:\u003c\/b\u003e Yes\u003c\/p\u003e\u003cp\u003e\u003cb\u003eOutput Type:\u003c\/b\u003e Unity Coupled output transformer\u003c\/p\u003e\u003cp\u003e\u003cb\u003eSpeaker Connections:\u003c\/b\u003e Solid Cinch speaker binding posts\u003c\/p\u003e\u003cp\u003e\u003cb\u003eOutput Meters:\u003c\/b\u003e Yes\u003c\/p\u003e\u003cp\u003e\u003cb\u003eRS232 Control:\u003c\/b\u003e Yes\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePower Control Outputs:\u003c\/b\u003e 1\u003c\/p\u003e\u003cp\u003e\u003cb\u003eData Ports:\u003c\/b\u003e 2\u003c\/p\u003e\u003cp\u003e\u003cb\u003eIR Sensor Input:\u003c\/b\u003e Yes\u003c\/p\u003e\u003cp\u003e\u003cb\u003eService Port:\u003c\/b\u003e 1\u003c\/p\u003e\u003cp\u003e\u003cb\u003eChassis:\u003c\/b\u003e Dual-layer polished stainless steel\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePower Requirement:\u003c\/b\u003e 120 V, 50\/60 Hz, 3.6 A\u003c\/p\u003e\u003cp\u003e\u003cb\u003eStandby Power Consumption:\u003c\/b\u003e Less than 0.25 W\u003c\/p\u003e\u003cp\u003e\u003cb\u003eDimensions (H × W × D):\u003c\/b\u003e 9-15\/16\" × 17-13\/16\" × 20-7\/16\" (25.2 × 45.2 × 51.9 cm)\u003c\/p\u003e\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 93 lb. (42.2 kg)\u003c\/p\u003e","brand":"mysite","offers":[{"title":"Default Title","offer_id":68075749703867,"sku":"MA2375","price":422.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0902\/2651\/files\/McIntosh-MA2375-Integrated-Amplifer-Image-05_jpg.webp?v=1793592085","url":"https:\/\/treevault.store\/products\/mcintosh-ma2375-2-channel-vacuum-tube-integrated-amplifier","provider":"TreeVault","version":"1.0","type":"link"}