Vari-Mu tube compressor interfacing vintage Sescom input transformers and Chicago output transformers. Tubes to be used in the compressor: 6BZ7 (goes with 6Н5П from soviet era), 12AT7, 6AL5 (goes with 6X2П from soviet era).

The compressor is based on the Altec 436C, RS124, VK1 topology and has controls:

- INPUT

- ATTACK

- RELEASE

- THRESHOLD

- LINK

- HOLD (release mod from RS124)

Chicago transformers refer to Chicago Standard Transformer Corporation, later known as Stancor.

The compressor is sold together with 1U ventilation panel, which must be installed above the compressor to keep your rack cool.

Check the demo on YouTube @HappinessMastering. Also, I have processed and unprocessed audio tracks to compare A/B, just DM me.

This heavy thing full of vintage transformers will not be shipped. I trust no carriers.

You are not invited to try it at my home by default because I have no time to entertain you.

There is a video recording for demo purposes. I am also very happy to answer questions.

If you like it, you are welcome to pick it up in Amsterdam by prior agreement.


Selling as is, no returns.

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Listed11 days ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
Brand
  • HM
Model
  • Dual Vari-Mu
Categories

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Sonia Boutique

Amsterdam, Netherlands
Joined Reverb:2026

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