{"product_id":"benchmark-mpa1-demo-deal","title":"Benchmark MPA1 (Demo Deal)","description":"The \u003cspan style=\"font-weight: bold;\"\u003eBenchmark MPA1\u003c\/span\u003e is a 2-channel microphone preamplifier designed and manufactured by Benchmark Media Systems, Inc. The MPA1 is meticulously designed to Benchmark standards of transparency, ultra-low distortion, and ultra-low noise performance - making the MPA1 a perfect choice for stereo pairs, ribbon mics, and any other application where purity is the goal.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003ePristine Input Stage\u003c\/span\u003e\u003cbr\u003eThe input stage of the MPA1 is designed with high-voltage headroom (+29 dBu) and single-stage gain control to maximize signal-to-noise ratio. The MPA1 maintains superb noise performance across the entire gain range (74 dB) by utilizing precision-matched, low-noise, transistor quad-arrays. A servo-controlled circuit minimizes DC-offset and maximizes headroom.\u003cbr\u003eComplete Low Frequency Response\u003cbr\u003e\u003cbr\u003eThe MPA1 exhibits exceptional low-frequency performance with a clever dual-capacitor AC-coupling design. This dual-capacitor design defeats the limitations of single-capacitor AC-coupling designs, achieving an exceptionally low corner-frequency with excellent subsonic phase-accuracy.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eInnovative Stepped-Resistor Gain Control\u003c\/span\u003e\u003cbr\u003eThe gain control of the MPA1 is completely unique. The gain is controlled via a 38-position, switched resistor ladder, set up in a continuously rotating orientation via relay control. This gain control circuit offers 2 dB per step, 0-74 dB of gain without attenuation, and inter-channel gain precision of +\/- 0.03 dB. A make-beforebreak scheme creates a silent switching circuit.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eElegant Phantom Power Protection\u003c\/span\u003e\u003cbr\u003eThe transistor stage is protected from phantom power surges with an ultra-fast, multi-stage protection circuit. This circuit utilizes the high-speed capabilities of low-capacitance Schotky diodes and the high-current capabilities of TVS diodes to absorb the phantom power surges caused by shorts and plugging\/unplugging microphones with +48V on. This circuit is pre-biased so that it is isolated from the circuit in normal operation and activated when a surge occurs.","brand":"Benchmark","offers":[{"title":"Default Title","offer_id":44449361330279,"sku":"16332","price":2915.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/benchmark_mpa1_1_1.jpg?v=1787088707","url":"https:\/\/vintageking.mom\/products\/benchmark-mpa1-demo-deal","provider":"Vintage King","version":"1.0","type":"link"}