{"product_id":"phasemation-ma-3000","title":"Phasemation MA-3000 - monoblock power amplifiers (pair)","description":"\u003ch1\u003e\u003cspan\u003ePhasemation MA-3000\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch3\u003e\u003cspan\u003eClass A 300B triode monoblock power amplifiers\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eWith the MA-3000, Phasemation carries forward key developments from its flagship MA-5000 monoblocks: a driver stage designed as a power amplifier in its own right, transformer coupling, and careful attention to vibration and magnetic interference.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt Ana Mighty Sound, this lineage is what interests us. The MA-3000 shares the MA-2000’s chassis format, but its internal design draws on the MA-5000. Understanding this new amplifier therefore means looking beyond its 300B output tubes.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTwo 300Bs per channel, 25 watts in parallel single-ended operation\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eEach monoblock uses two 300B triodes in a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eparallel single-ended\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, or PSE, configuration. Both tubes operate in parallel within a pure Class A output stage, without negative feedback.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMaximum rated output is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e25 watts per channel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. This allows Phasemation to retain a single-ended triode architecture while providing more power than a single 300B.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor Zen Saito, the designer behind Phasemation’s amplifiers, vacuum tubes remain relevant today. His work focuses on conveying the energy and individuality of a performance, with particular attention to the speed of signal transmission.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhat happens before the 300Bs\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe driver stage is one of the MA-3000’s most interesting features. A \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003etriode-connected PSVANE EL34\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e drives the output tubes through an interstage transformer developed by Phasemation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis stage itself provides power amplification, following the approach established in the MA-5000. The aim is to lower the impedance driving the 300Bs and preserve signal linearity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA new toroidal power transformer was developed to meet the requirements of this architecture. The output transformers are supplied by \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLundahl\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, whose products Phasemation has used since 2013.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTransformers: electrical function and mechanical behaviour\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe work on the transformers extends to their mounting. The MA-3000 adopts the vibration-isolation structure developed for the MA-5000: a floating mount using a specially selected damping material to limit vibration transmission to the circuits, chassis and tubes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTAOC high-carbon cast-iron feet\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e complement this approach. Shielding around the transformers and choke coils also helps reduce the influence of stray magnetic fields on sensitive circuits.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eA tube cover that forms part of the design\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe tube cover deserves a specific mention: Phasemation designed and tuned the MA-3000 to operate with it in place. A silicon-steel plate incorporated into the rear of the cover contributes to magnetic shielding.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe ventilation openings feature traditional Japanese patterns. A glass front reveals the tubes, while the thick, slanted front panel retains Phasemation’s distinctive appearance.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003ePractical adjustments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eEach monoblock provides an RCA input and an XLR input. A rear-panel switch offers three settings: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0 dB, −6 dB and MUTE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The −6 dB attenuation provides a more usable volume-control range when paired with a high-gain preamplifier.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSeparate \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e4 Ω and 8 Ω speaker connections\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e are provided. The rhodium-plated copper Furutech binding posts incorporate a torque limiter to prevent overtightening.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003ePhasemation MA-3000\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eType\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eVacuum-tube monoblock power amplifier\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperation\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePure Class A, without negative feedback\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput stage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTwo 300B triodes in parallel single-ended configuration\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDriver stage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTriode-connected PSVANE EL34\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInterstage coupling\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePhasemation interstage transformer\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower transformer\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eToroidal, developed for the MA-3000\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput transformer\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLundahl\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaximum rated output\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e25 W per monoblock at 5% THD\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInput impedance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e47 kΩ\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eGain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30 dB\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFrequency response\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 Hz–40 kHz, +0\/−3 dB\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eResidual noise\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt; 200 µV, A-weighted\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInputs\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRCA and XLR\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eAttenuator\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 dB \/ −6 dB \/ MUTE\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSpeaker output taps\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 Ω and 8 Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRated power consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e140 W per monoblock, 100 V version\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDimensions per monoblock\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e310 × 255 × 480 mm — W × H × D\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight per monoblock\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e19 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Phasemation","offers":[{"title":"Default Title","offer_id":54883622715715,"sku":null,"price":48000.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0904\/5377\/0563\/files\/MA-3000_image_02.jpg?v=1791326325","url":"https:\/\/www.anamightysound.com\/products\/phasemation-ma-3000","provider":"Ana Mighty Sound","version":"1.0","type":"link"}