Description
Few components can boast the refined array of circuit innovation hidden in the PM8003 s chassis. All devoted to one goal more natural music reproduction they grew naturally from Marantz s long history of sonic excellence. At the beginning, Marantz engineers specified a power supply based on a large toroid transformer to control stray magnetic fields. They insisted on custom capacitors that efficiently stored and released energy to all circuits as needed. The circuits themselves? A careful amalgam of both thoroughly proven and promising new topologies. Parts selection? Not only the best under laboratory test conditions but also the best after careful evaluation by the most critical instrument of all the human ear. In both the preamp and power amp sections, the PM8003 uses fully-discrete, high speed current feedback circuits for minimal phase shift and better detail resolution. Even the phono input, normally a low quality after-thought in some competitor s offerings, is a fully discrete, constant-current design optimized for moving magnet phono cartridges. Another discrete implementation this time of Marantz s notable HDAM SA3 (the most recent addition to the High Definition Amplifier Module series) performs critical voltage to current conversions throughout the PM8003. Most inputs benefit from a common buffer circuit that minimizes unwanted interactions between source and amp. The CD input enjoys a separate buffer for even better isolation. The
Summary
Product Title: Marantz PM8003 Stereo Integrated Amplifier
Manufacturer: Marantz
Power Score: 4.4 | 1 Review
The Marantz PM8003 is a high-powered, integrated stereo amplifier designed for either a starter system or a “second system” in homes, dens, or dorms. As a step up from the PM5003, the PM8003 utilizes a more-powerful toroid transformer with custom capacitors—leading to an enhanced power output of 100W. Included also are fully-discrete, high-speed current feedback circuits in the...
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