抛开振膜的材料，结构，供电电路等等一系列的不同，说最主要的：
1. Sound Lab是全频发声，而不是如Megnepan一样是中高和中低两部分振动
2. Sound Lab的振膜尺寸远远超过Megnepan
以上是物理理论上的优势，理论是理论，Megnepan通过多年的口碑累积，毫无疑问是值得信赖的顶级扬声器。但2005年后生产的产品并没有精进的迹象。
以下是外国烧友的评论之一，他的个人观点，仅供参考：
“I have Magnepan MG-20s and have heard SoundLabs in several setups. （我本人拥有Magnepan MG-20S并听过Sound Lab的产品）
Magnepans have separate drivers located next to each other horizontally. They cannot generate a coherent virtual source the same way SoundLabs can. （Magnepan无法如Sound Lab一般提供垂直方向上的一致性）
Stock Magnepans have dull（未经摩改的Magnepan声音呆板）, veiled sound because of the poor quality of the connection hardware, internal wiring, and crossover components（由于Magnepan使用的内部接线材料和分频器原料素质差）. Once these are replaced, the ribbon tweeters are more revealing than any other speaker I've heard. This is because it is possible to connect the tweeters to the amps through a single capacitor, or directly if one chooses to use a line-level crossover setup and multiple amps.
The speakers represent different approaches to the concept of large-area planar dipoles. There are unavoidable trade-offs in each approach. Tweaking can minimize some of the trade-offs, but Magnepans cannot ever reproduce the full sound-stage the way SoundLabs can.” （Magnepan永远无法提供如Sound Lab一般完整的声像舞台）
