{"product_id":"phasemation-ma-1500-monoblock-power-amplifier-pair","title":"Phasemation MA-1500 Monoblock Power Amplifier (pair)","description":"\u003ch1\u003e\nPhasemation MA-1500 Vacuum Tube Monaural Power Amplifier\n\u003c\/h1\u003e\n\u003ch3\u003e\n300B single-ended class-A monaural power amplifier with Lundahl interstage and output transformers\n\u003c\/h3\u003e\n\u003cp\u003e\nThe Phasemation MA-1500 is a pure class-A, single-ended 300B monaural power amplifier designed to deliver the tonal purity, spatial depth, and harmonic integrity that define the 300B experience. Built on a rigid chassis with choke-filtered power supply, DC-heated 300B filament, and carefully selected triode stages, the MA-1500 emphasizes quiet operation, stable drive, and natural, emotionally expressive sound.\n\u003c\/p\u003e\n\u003cp\u003e\nIts signal path uses an all-triode, non-feedback circuit (5814A input, 6CG7 driver, 300B output) with Lundahl interstage and output transformers for wide bandwidth and low distortion. A 5R4G rectifier tube suppresses switching noise, while a DC filament supply for the 300B further reduces hum. Separate 4 Ω and 8 Ω output taps ensure optimal matching with high-efficiency loudspeakers, making the MA-1500 ideal for systems built around nuance, timbre, and intimacy.\n\u003c\/p\u003e\n\u003ch3\u003e\nSpecifications\n\u003c\/h3\u003e\n\u003cp\u003e\n\u003cb\u003eType:\u003c\/b\u003e 300B single-ended monaural power amplifier\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cb\u003eRated Output:\u003c\/b\u003e 10 W or more (THD 5%)\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cb\u003eFrequency Response:\u003c\/b\u003e 10 Hz–40 kHz (+0, -3 dB)\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cb\u003eInput Impedance:\u003c\/b\u003e 47 kΩ\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cb\u003eGain:\u003c\/b\u003e 26 dB\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cb\u003eResidual Noise:\u003c\/b\u003e 200 μV or less (A-NET)\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cb\u003eOutput Impedance:\u003c\/b\u003e 4 Ω, 8 Ω\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cb\u003ePower Consumption:\u003c\/b\u003e 100 W\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cb\u003eDimensions (WHD):\u003c\/b\u003e 9.65\" x 8.90\" x 16.81\" (245 x 226 x 427 mm)\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cb\u003eWeight:\u003c\/b\u003e 35.27 lb. (16 kg)\n\u003c\/p\u003e\n","brand":"Phasemation","offers":[{"title":"Default Title","offer_id":52351140298936,"sku":"MA-1500","price":23975.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/ma1500_front_rgb.png?v=1765413623","url":"https:\/\/upscaleaudio.pro\/products\/phasemation-ma-1500-monoblock-power-amplifier-pair","provider":"Upscale Audio","version":"1.0","type":"link"}