MANLEY/Stereo Variable-MU Limiter Compressor w/T-Bar Option I've been using it for about 5 years, but the frequency of use is quite low, about 0-3 times a month. When ordering, you could choose between 100V and 117V specifications, and I chose the 117V specification. The step-up transformer EHU-600 in the 13th photo is also included. It was adjusted in February 2025. New price: 880,000 yen (tax included) --The following is quoted from the Miyaji Gakki product page-- The MANLEY "VARIABLE MU LIMITER COMPRESSOR" is a best-seller for MANLEY. It's no exaggeration to say it's the face of MANLEY. This model has already become the de facto standard in mastering studios and has produced countless hit records. And it will continue to produce them. "Mu" is a tube jargon term meaning gain. Variable Mu has become a registered trademark of MANLEY. The vintage Fairchild 670, which is now difficult to obtain, is an all-tube compressor that uses this technology. This model has already been discontinued, and it is well known that it is difficult to obtain. In other words, today, this type of limiter/compressor is only available from MANLEY. Conceptually, compression is achieved by using "remote cutoff" or by re-biasing the vacuum tubes. Even the sidechain has powerful rectifier vacuum tubes. At the heart of this technology is the unique 5670 dual triode, which suppresses peaks. Furthermore, the compression operation, which constantly re-biases the vacuum tubes, increases or decreases the sidechain control voltage, resulting in smooth gain. (※Due to character limits, I have quoted only part of the text)