美国Sutherland(雪特兰) Duo 唱头放大器

---- 将左右声道电路及供电完全设置于两个独立箱体，实现唱放真正单声道化设计

• ---- 采用1/8吋厚玻璃纤维线路板，Wima电容及Dale/Vishay电阻等殿堂级零件，带来更稳定的工作效果
• ---- 增益达64dB及设有4项不同输入阻值可供调节

No expense was spared in the design and construction of the Phono Blocks. The Phono Blocks are at the pinnacle of phono preamp performance. It just doesn’t get any better. The 20/20 was designed to get the most performance possible at its predetermined price point. To get there,  extra was spent to get premium parts and circuitry into the signal path. Consequently, some expenses were squeezed out of less important areas. Those trade-offs have worked very well. The 20/20 has delivered an extremely high level of performance at a reasonable price. It is an incredible performance value.

What if all the price constraints in the 20/20 were lifted? The price goes up, the performance goes up. It starts looking a lot like the Phono Blocks. The actual signal path of the 20/20 is quite good. It uses a circuit very similar to the Phono Blocks. In critical positions, it also uses the same premium quality (and high cost) components. Very little was held  back in that area. The opportunity for upgrade is focused on a more refined power supply, improved circuit board properties and dual chassis construction.