{"product_id":"phasemation-cm-1500-passive-control-preamplifier","title":"Phasemation CM-1500 Passive Control Preamplifier","description":"\u003ch1\u003ePhasemation CM-1500 Hybrid Passive Preamplifier\u003c\/h1\u003e\n\u003ch3\u003eHybrid passive transformer attenuator preamplifier with -10 dB \/ 0 dB \/ +6 dB gain switch and balanced \/ unbalanced I\/O\u003c\/h3\u003e\n\u003cp\u003eThe Phasemation CM-1500 is a hybrid passive preamplifier built around a transformer-based attenuator designed to preserve signal purity while offering flexible gain structure. It combines the high input impedance of a passive control center with the low output impedance needed to drive a wide range of power amplifiers. A 23-step attenuator provides precise volume resolution, while a three-position gain switch allows the CM-1500 to integrate seamlessly with everything from high-efficiency speakers to low-gain amplifiers.\u003c\/p\u003e\n\u003cp\u003eThe attenuator transformer uses an ultra-thin Super Malloy core and PC-Triple C wire to deliver a wide frequency response with low distortion. Gold-plated rotary switches, high-quality RCA terminals, Neutrik XLR connectors, and a rigid copper-plated steel chassis with a 10 mm aluminum front panel all work together to minimize noise, vibration, and mechanical resonance. With both balanced and unbalanced inputs and outputs, the CM-1500 offers versatile system configuration while maintaining a clean, natural signal path.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eForm:\u003c\/b\u003e Hybrid passive preamplifier\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Impedance:\u003c\/b\u003e 47 kΩ or more\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Impedance:\u003c\/b\u003e 250 Ω or less\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eChannel Separation:\u003c\/b\u003e 100 dB or more (20 Hz–20 kHz)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFrequency Response:\u003c\/b\u003e 10 Hz–100 kHz (+0, -3 dB)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eGain:\u003c\/b\u003e -10 dB \/ 0 dB \/ +6 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Terminals:\u003c\/b\u003e RCA × 3, XLR × 2\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Terminals:\u003c\/b\u003e RCA × 2, XLR × 2\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions (WHD):\u003c\/b\u003e 16.93\" x 3.66\" x 14.25\" (430 x 93 x 362 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 14.33 lb. (6.5 kg)\u003c\/p\u003e","brand":"Phasemation","offers":[{"title":"Black","offer_id":52351140823224,"sku":"CM-1500-BLK","price":10975.0,"currency_code":"USD","in_stock":true},{"title":"Gold","offer_id":52351140855992,"sku":"CM-1500-GLD","price":10975.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/CM-1500K_Front.png?v=1765414784","url":"https:\/\/upscaleaudio.pro\/products\/phasemation-cm-1500-passive-control-preamplifier","provider":"Upscale Audio","version":"1.0","type":"link"}