SR4500的升级产品对于多声道环绕声放大器来说,凡比较大型的生产厂家都有着齐全的产品线,从功能简单、满足基本用家需要的入门级型号,到功能丰富、适应面广的中级型号,再到功能完善、精益求精、满足发烧友终极需求的顶级型号,让潜在的用家们可以根据自己的具体情况量体裁衣,选择合意的产品。对于在放大器方面有丰厚经验的马兰士来说,齐全的产品线自然不成问题。位于产品线顶端的是 SR4500 upgrade products For multi-channel surround amplifier, where the larger manufacturers have a complete product line, from the simple function to meet the needs of basic users entry-level models, to feature-rich, adaptable to a wide range of intermediate Model, and then to the perfect function, excellence, to meet the ultimate needs of enthusiasts top models, so that potential users can tailor their own specific circumstances, choose the desired product. For Marantz, who has extensive experience in amplifiers, a complete product line is not a problem. Located at the top of the product line is