Aphex Compellor 300 AX, serienummer AXCE 2832, analog välkänd studio/radio/podcast ljudkompressor/limiter som inte pumpar/flåsar, i stereo. XLR balanserat in/ut. Sällan använd. Gott använt skick.

Från manualen om funktionen:
The Aphex COMPELLOR e' is a multipurpose audio processor designed to give nearly inaudible control of short- and long-term average program dynamic range. The COMPELLOR maintains a well-controlled "average" audio level. One way to describe this is that the program floor is "lifted", so quiet signals become more audible, while excessively loud signals are reduced in level. The COMPELLOR provides simple adjustments to set the extent of control.

In the COMPELLOR, the functions of compression, leveling, and limiting are interwoven with an intelligent control system to maintain all functions simultaneously. The various dynamic attributes of an audio signal are managed using program-dependent processing to minimize the audibility of the COMPELLOR doing its job.

This means the "squeezing" or "pumping" effects commonly attributed to signal compressors are absent with the COMPELLOR, even when a large amount of control is used. The main attribute of the COMPELLOR, then, is that it is "invisible" in the audio system - you will not detect its presence.