SKU: 84039513623

Union Tube & Transistor Lab Compressor *Beancounter Edition*

Sale price$105.75 Regular price$117.50
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Description

Union Tube & Transistor Lab Compressor *Beancounter Edition*Maker: Union Tube & Transistor Model: Lab Compressor Condition: New Description: The LAB is an optical compressor. It uses custom optocouplers to achieve up to 30dB of musical sounding compression. We loved how in the recording studio even with tons of compression the old optical compressors such as the LA 2A, the LA 3, the LA 4 sounded smooth and natural. The essence of the LAB's sound comes from the fast attack and slow release times of the custom

Maker: Union Tube & Transistor

Model: Lab Compressor

Condition: New 

 

Description:  

The LAB is an optical compressor. It uses custom optocouplers to achieve up to 30dB of musical-sounding compression.

We loved how in the recording studio even with tons of compression the old optical compressors such as the LA-2A, the LA-3, the LA-4 sounded smooth and natural.

The essence of the LAB's sound comes from the fast attack and slow release times of the custom optocoupler. The optocoupler's behaviour is quite complex, and program-dependent. It can't be modelled with simple resistor-capacitor networks. We wanted the pure response of the optocoupler to define the LAB's dynamics, and not supplement that with RC filtering.

To that end, we tried out just about every off-the-shelf optocoupler on the market, but ended up designing and manufacturing our own custom units. There's an interplay between dynamics, noise floor, distortion, and available compression on the one hand, and the opto's electrical parameters on the other. Since nothing commercially available fit the bill, we built our own.

With just two controls – compression and gain make-up – the LAB is fast and simple to use. It sounds great on bass and electric guitar, and the noise floor is impressive – quiet enough for studio use. It really shines on acoustic guitar, vocals and drums.

 

LAB Optical Compressor Specifications

Power Requirements +9VDC @40mA

Input Impedance 1MΩ

Output Impedance 100Ω

Frequency Response 20Hz–20KHz ±0.1dB

Maximum Input Level +7.5dBu

Maximum Output Level +10.0dBu

Compression/Gain-makeup 30dB

Noise Figure (Rs=10K) 3dB

For studio use you will need to attenuate going in and boost coming out of the LAB.

 

The Bean Counter version of the LAB has a non-colour changing LED and no special packaging.





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Exchange/Return Notes
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SKU: 84039513623

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Maria T Solla
Los Angeles, US
★★★★★ 5
Good product!
Size: 6.76 Fl Oz (Pack of 3)
Good for your body and feet
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Reviewed in the United States on December 26, 2025
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liza
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Nivea cream
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I use this daily, very creamy and not greasy
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Reviewed in the United States on April 12, 2026
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★★★★★ 4
Reliable age old formula
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I have used this formula for decades and it is reliable and consistent.
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Reviewed in the United States on January 7, 2025
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Sandra Ruelas
Natrona Heights, US
★★★★★ 5
Dry Face needs moisture
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This cream was a lifesaver when my face was extremely dry. It’s rich but absorbs well, leaving my skin feeling deeply moisturized and smooth without feeling greasy. A little goes a long way, and it really helped restore my skin barrier.
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Reviewed in the United States on February 7, 2026
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Angelina Batista
Louisville, US
★★★★★ 5
Good
Size: 6.76 Fl Oz (Pack of 3)
Good
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Reviewed in the United States on April 28, 2026

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