我正在使用，效果明显，这种感受只能亲自体验。我用的是上一代产品。我之前偶然看过拉斯维加斯电子展一篇网络报道(http://www.stereophile.com/conte ... one-lots-more-lobby)，编辑在现场听后，感觉很受用，就建议厂方将产品名称改为”低频解码器“更恰当，原来的名称确实是”低频控制器“。

这次上海音响展上，Audio Reference Technology公司推出了一台叫做”低频解码“的机器，正式的名字叫A.R.T. Low Frequency Effect，接在解码与功放之间，现场听到对低频效果有明显的改善，不知各位有没有注意到。
下面是我在该公司官网上查到的一点介绍信息，很简单，有了解的大侠帮进一步介绍介绍。
A.R.T. Low Frequency Effect[size=1.2em]

At present, whether you possess the world's most hi-end stereo system or not, the space where you listen to the music directly effects your equipment.  Most audio equipment operates below its optimum, with regard to bandwidth and tone quality, which is truly a great loss to the consumers. Even with some excellent stereo systems with frequencies that extend into the low 20Hz range, one cannot hear the bass properly because of echo, the length of the sound wave, or because the power amplifier can't control the bass on its own.

A.R.T. Low Frequency Effect is designed to solve all these problems.  You will not only experience fantastic low frequency, but the whole bandwidth will be amazingly open and wide.  The rotundness and the purity of the tenor, the clarity and profoundness of the bass, and the three-dimensional compass are so lovely, you will never want to be without it again.

highlights

• Simple Equalizer function allows one to freely choose voice frequencies from 3Hz to 65Hz
• Other frequencies will not be disturbed, allowing one to appreciate the reality, purity, and clarity of the melody
  

借用一下姚大侠的照片。图中下面第二台就是所谓的“低频解码”

隆胸很流行

真牛逼的组合，这音箱配不上。

多余。。。。。。

好像是个等化器 处理低频为主

应该是放在前级下面吧?

猜想，就是将低频信号抬高或者将高频信号压低。改变了信号的频率与幅度的比例关系。

在现场听了半个小时，低频的层次、延伸和控制力很不错，当然是我个人的听感

我想这就是房间频响的校正器。有的是全频校正,它是大概在某个低频段下,故为低频。