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Universal Audio 175 B #1188 (Vintage) – No Longer Available

Vintage tube compressor/limiter

Product Description

Rare tube compressor/limiter that adds a thick texture and euphoric halo around any signal passing through it. These are labor intensive units to restore, but our tech staff performs this work beautifully.



Introduced in 1961, the 175 is similar to its cousin the Urei 1176; the Input control sets the threshold while Output sets the output gain. The compression is at a fixed ratio of 12:1. The meter can be switched to view Input, Output, or Gain Reduction (GR). Both Input and Output gain controls are stepped at intervals of 2dB, but finer controls within these increments are obtained by using the “Vernier” controls.

Adjustable attack time from 100 to 1000 ms; adjustable release from 27 to 527 ms. Similar to the 1176, both switches are set at their fastest in the clockwise position, and the compression circuit can be clicked off using the attack knob.

There are also “Double Tip” Input and Output jacks; the original cables for these had two 1/4” jacks at both ends of the cable. These can be bypassed by using the included XLR pigtails.

Product Specifications

Condition Used / Vintage
Tube or Solid State Tube
Channels Single-Channel
Chassis 19-inch Rack-mount
Rack Spaces 2u
Direct Input No
Digital I/O No
Input Connectors Analog XLR
Output Connectors Analog XLR

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
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Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.
The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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