{"product_id":"yamaha-m-5000-stereo-power-amplifier","title":"Yamaha M-5000 Stereo Power Amplifier","description":"Yamaha has been building instruments for concert halls since 1887 — the same ears that tune Steinways and design acoustic spaces also shaped the M-5000. This is Yamaha's statement stereo power amplifier, the monolithic anchor of their 5000 Series flagship system, and it exists to do one thing: deliver every watt with the precision and authority that 130-plus years of acoustic mastery demands. At 100 watts per channel into 8 ohms (doubling to 200 into 4), with a damping factor above 300 and a signal-to-noise ratio of 110 dB, the numbers are exceptional — but the engineering philosophy behind them is what separates the M-5000 from amplifiers that merely look the part.\n\n\u003cp\u003eThe M-5000 is built around Yamaha's Floating and Balanced Power Amplifier topology: a push-pull MOSFET output stage that is mirror-symmetrical from input to output, balanced from front to back, and physically laid out so the left and right channels are mechanically and electrically isolated from each other. The signal path is kept radically short — drawn-out copper wiring replaces conventional PCB traces where it matters most — and the entire structure sits on a rigid frame chassis that Yamaha calls Mechanical Ground, designed to drain vibration away from the circuit rather than let it resonate through it. Beneath the circuit sits a massive toroidal transformer on a 3mm pure-brass base, paired with oversized filter capacitors, all of it screened to prevent magnetic fields from coupling into the audio path. None of these choices are audiophile theater; each one targets a specific distortion mechanism and eliminates it at the source.\u003c\/p\u003e\n\n\u003cp\u003eThe M-5000 is designed to operate as a matched system with the C-5000 preamplifier and GT-5000 turntable, with balanced XLR connectivity carried end-to-end across the chain. Used standalone, it accepts both balanced and single-ended inputs with input sensitivity optimized for each. The custom 7mm Asahi glass VU meters are calibrated to 2.5th class precision — not decorative, but a real-time readout of what the amplifier is actually doing. Custom brass feet ship with both spike and scratch-guard options. The M-5000 is available in Silver\/Piano Black and Black\/Piano Black, both matching the 5000 Series aesthetic.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFloating and Balanced MOSFET Output Stage.\u003c\/strong\u003e The push-pull MOSFET topology is perfectly symmetrical from input to output, eliminating common-mode noise and keeping even-order distortion vanishingly low — the measured THD at rated power is 0.07%, dropping to 0.035% under the IEC standard two-channel test.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMechanical Ground Chassis.\u003c\/strong\u003e The rigid frame structure is engineered to route vibration out of the circuit rather than into it. Resonance that would otherwise modulate the signal path is absorbed and drained at the chassis level — the same principle Yamaha applies to concert hall floor design.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShortened, Low-Impedance Signal Paths.\u003c\/strong\u003e Where conventional amplifiers route signal through PCB traces, Yamaha uses hand-drawn copper wiring for the critical signal passages. The result is lower contact resistance, less inductance, and a direct route from input to speaker terminal that doesn't accumulate noise.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMassive Toroidal Transformer on Pure-Brass Base.\u003c\/strong\u003e The 3mm brass plinth under the toroidal transformer isn't structural theater — brass damps the resonant frequency of the transformer itself, preventing mechanical vibration from coupling into the audio circuit. Oversized speaker terminals use pure brass construction with screw-type clamping for the lowest possible contact resistance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e110 dB Signal-to-Noise Ratio, Damping Factor 300+.\u003c\/strong\u003e A damping factor above 300 at 1 kHz means the M-5000 exercises tight control over woofer cone movement — bass stays articulate and defined rather than loose. The 110 dB SNR leaves the noise floor so far below the music that it simply isn't a variable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecision VU Meters, 7mm Asahi Glass.\u003c\/strong\u003e The illuminated meters are calibrated to 2.5th class accuracy using precision-ground Asahi glass — the same optical glass used in high-quality camera lenses. They read true power output in real time, not a cosmetic approximation.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Output Power (8 ohm, 20 Hz–20 kHz, 0.07% THD, 2-channel):\u003c\/strong\u003e 100 W + 100 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Output Power (4 ohm, 20 Hz–20 kHz, 0.07% THD, 2-channel):\u003c\/strong\u003e 200 W + 200 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Output Power (8 ohm, monaural):\u003c\/strong\u003e 400 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIEC Output Power (8 ohm, 1 kHz, 0.02% THD):\u003c\/strong\u003e 125 W + 125 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Effective Output Power \/ JEITA (8 ohm):\u003c\/strong\u003e 135 W + 135 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Effective Output Power \/ JEITA (4 ohm):\u003c\/strong\u003e 270 W + 270 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDynamic Power Per Channel \/ IHF (8 ohm):\u003c\/strong\u003e 125 W + 125 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDynamic Power Per Channel \/ IHF (6 ohm):\u003c\/strong\u003e 170 W + 170 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDynamic Power Per Channel \/ IHF (4 ohm):\u003c\/strong\u003e 250 W + 250 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDynamic Power Per Channel \/ IHF (2 ohm):\u003c\/strong\u003e 500 W + 500 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDynamic Headroom:\u003c\/strong\u003e 0.97 dB (8 ohm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Bandwidth:\u003c\/strong\u003e 10 Hz–50 kHz (8 ohm, 0.1% THD, 45 W)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion + Noise (2-channel):\u003c\/strong\u003e 0.035%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion + Noise (monaural):\u003c\/strong\u003e 0.05%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e +0 \/ −3 dB, 5 Hz–100 kHz; +0 \/ −0.3 dB, 20 Hz–20 kHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio (IHF-A):\u003c\/strong\u003e 110 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResidual Noise (IHF-A, balanced):\u003c\/strong\u003e 40 µVrms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResidual Noise (IHF-A, unbalanced):\u003c\/strong\u003e 50 µVrms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannel Separation:\u003c\/strong\u003e 90 dB or higher (1 kHz); 70 dB or higher (10 kHz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDamping Factor:\u003c\/strong\u003e 300 or higher (8 ohm, 1 kHz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Sensitivity \/ Impedance (balanced):\u003c\/strong\u003e 2.0 Vrms \/ 47 kΩ\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Sensitivity \/ Impedance (unbalanced):\u003c\/strong\u003e 1.0 Vrms \/ 47 kΩ\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Input Signal Voltage (balanced, 1 kHz, 0.5% THD):\u003c\/strong\u003e 2.20 Vrms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Input Signal Voltage (unbalanced, 1 kHz, 0.5% THD):\u003c\/strong\u003e 1.10 Vrms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Terminals:\u003c\/strong\u003e RCA ×1, Balanced XLR ×1, Trigger In ×1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Terminals:\u003c\/strong\u003e Trigger Out ×1, Speaker terminals (screw-type, pure brass) ×1 pair per channel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeter Class:\u003c\/strong\u003e 2.5th class\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 400 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Power Consumption:\u003c\/strong\u003e 800 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandby Power Consumption:\u003c\/strong\u003e 0.2 W (standby mode); 0.1 W (off mode)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto Power Standby:\u003c\/strong\u003e Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e 17-1\/8\" × 7-1\/8\" × 18-1\/4\" (435 × 181 × 464 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 59.3 lbs. (26.9 kg)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinishes Available:\u003c\/strong\u003e Silver\/Piano Black, Black\/Piano Black\u003c\/li\u003e\n\u003c\/ul\u003e]]\u0026gt;","brand":"Yamaha","offers":[{"title":"Silver\/Piano Black","offer_id":48819114639579,"sku":"YAM-M5000-SIL","price":9999.0,"currency_code":"USD","in_stock":true},{"title":"Black\/Piano Black","offer_id":48819114672347,"sku":"YAM-M5000-BLK","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1363\/6553\/files\/m5000-silver-front.jpg?v=1780017507","url":"https:\/\/almaaudio.com\/products\/yamaha-m-5000-stereo-power-amplifier","provider":"Alma Music and Audio","version":"1.0","type":"link"}