{"product_id":"yamaha-a-s1200-integrated-amplifier","title":"Yamaha A-S1200 Integrated Amplifier","description":"Yamaha has been shaping what instruments and concert halls sound like since 1887 — and that institutional knowledge runs through every circuit in the A-S1200. This is a purely analog integrated amplifier built around a 625VA toroidal transformer, a floating balanced power amplifier stage, and a mechanical ground architecture borrowed directly from the higher A-S2200 and A-S3200. The result is 90 watts per channel into 8 ohms with the headroom and tonal authority you'd expect from an amplifier costing considerably more.\n\n\u003cp\u003eThe A-S1200 is unapologetically analog in an era when streaming boxes get added to everything. There are no digital inputs, no DAC, no Bluetooth — just four RCA line inputs, a switchable MM\/MC phono stage for both moving-magnet and low-output moving-coil cartridges, a MAIN IN for pairing with a separate preamp, a headphone output, and a PRE OUT for biamplification or an external power amplifier. That deliberate focus means the engineering budget went entirely into the signal path, not into feature-list padding. The level meters — backlit, analog, the kind that make you watch music happen — are not cosmetic nostalgia. They are telling you something about the music's dynamic structure that a static LED bar cannot.\u003c\/p\u003e\n\n\u003cp\u003eAt Alma we carry the A-S1200 because it occupies a specific and valuable position in the amplifier landscape: it is the point at which Yamaha's Japanese manufacturing precision and 135-year acoustic heritage are accessible without a flagship price. Pair it with an analog source and a speaker that wants current — the 150-watt-per-channel into 4-ohm headroom and a damping factor north of 250 are meaningful numbers — and this amplifier will outperform its price tag in the way only a company with this depth of engineering history can deliver.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eToroidal Transformer, 625VA.\u003c\/strong\u003e Toroidal transformers are reserved for flagship amplifiers in most brands; Yamaha puts one here. The toroid's low stray field and high energy storage translate directly into transient authority — the A-S1200 does not compress when the music gets loud.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFloating Balanced Power Amplifier.\u003c\/strong\u003e The output stage runs as a balanced differential circuit from input to speaker terminal, cancelling common-mode noise at the amplification stage itself rather than filtering it downstream. This is part of why the line-source S\/N ratio is 110 dB.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMechanical Ground Concept.\u003c\/strong\u003e The main chassis, heat sinks, transformer, and filter capacitors are all bolted directly to a rigid chassis — a discipline inherited from the A-S2200 and A-S3200. Microphonic vibration that would otherwise modulate the power supply is drained to structural ground instead. The practical effect is tighter, more defined bass.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMM\/MC Phono Stage, Switchable.\u003c\/strong\u003e A rear-panel slide switch selects between moving-magnet (3.5 mVrms\/47kΩ) and moving-coil (150 µVrms\/50Ω) sensitivity. No outboard phono stage required — and RIAA deviation is held to ±0.5 dB across the full bandwidth.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnalog Level Meters.\u003c\/strong\u003e Backlit by softly illuminated LEDs, the VU meters display real-time power output and reflect the music's dynamic pulse rather than a processed peak-hold approximation. They are also a reliable indicator of how hard you are driving your speakers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePure Analog Signal Path.\u003c\/strong\u003e No digital inputs, no DSP, no upsampling. Every source arrives as an analog signal and leaves as one. For listeners whose primary sources are turntable and CD transport — or who already own a separate DAC they trust — this is a feature, not a limitation.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Integrated stereo amplifier, fully analog\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Output Power:\u003c\/strong\u003e 90 W + 90 W (8 ohms, 20 Hz–20 kHz, 0.07% THD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Output Power (4 ohms):\u003c\/strong\u003e 150 W + 150 W (20 Hz–20 kHz, 0.07% THD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Dynamic Power per Channel:\u003c\/strong\u003e 105 W (8Ω) \/ 135 W (6Ω) \/ 190 W (4Ω) \/ 220 W (2Ω)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDamping Factor:\u003c\/strong\u003e ≥ 250 (1 kHz, 8 ohms)\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\u003eTotal Harmonic Distortion (20 Hz–20 kHz):\u003c\/strong\u003e Phono MC → Line Out: 0.02% (1.2 Vrms); Phono MM → Line Out: 0.005% (1.2 Vrms); CD → Speaker Out: 0.035% (50 W \/ 8Ω)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e Phono MC: 90 dB; Phono MM: 96 dB; CD \/ Line: 110 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRIAA Equalization Deviation:\u003c\/strong\u003e ±0.5 dB (Phono MM\/MC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Sensitivity \/ Impedance:\u003c\/strong\u003e Phono MC: 150 µVrms \/ 50Ω; Phono MM: 3.5 mVrms \/ 47 kΩ; CD \/ Line: 200 mVrms \/ 47 kΩ; MAIN IN: 1 Vrms \/ 47 kΩ\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog Inputs:\u003c\/strong\u003e 4 × RCA line (CD, TUNER, LINE 1, LINE 2), 1 × Phono (MM\/MC switchable), 1 × MAIN IN (RCA)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e Speaker binding posts (A\/B), PRE OUT (RCA), REC OUT (RCA), 6.35 mm headphone jack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Inputs:\u003c\/strong\u003e None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBalanced (XLR) Inputs:\u003c\/strong\u003e None (available on A-S2200 and A-S3200)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhono Stage:\u003c\/strong\u003e MM and MC (rear-panel slide switch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Transformer:\u003c\/strong\u003e 625 VA toroidal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e 17-1\/8″ × 6-1\/8″ × 18-1\/4″ (435 × 157 × 463 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 48.5 lbs (22.0 kg)\u003c\/li\u003e\n\u003c\/ul\u003e]]\u0026gt;","brand":"Yamaha","offers":[{"title":"Silver\/Piano Black","offer_id":48819119390939,"sku":"YAM-AS1200-SLPB","price":2999.95,"currency_code":"USD","in_stock":true},{"title":"Black\/Piano Black","offer_id":48819119423707,"sku":"YAM-AS1200-BLPB","price":2999.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1363\/6553\/files\/yamaha-as1200-01-silver-front.jpg?v=1780017529","url":"https:\/\/almaaudio.com\/products\/yamaha-a-s1200-integrated-amplifier","provider":"Alma Music and Audio","version":"1.0","type":"link"}