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.





Shipping Notes
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Exchange/Return Notes
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SKU: 84039513623

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Abraham J. Sanchez
Port Orchard, US
★★★★★ 4
Good product good price
Size: 18 Ounce (Pack of 6)
Pretty good, great price
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Reviewed in the United States on April 30, 2026
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Erica
San Leandro, US
★★★★★ 5
Generic is just as good
Size: 18 Ounce (Pack of 6)
Good value, just like the name brand - only drawback is they don’t come with pumps
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Reviewed in the United States on March 21, 2026
B
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Bethany
Dallas, US
★★★★★ 5
Love
Size: 18 Ounce (Pack of 1)
Love the natural oatmeal ingredients and scent! Has been applied to face as well as legs and seems to moisturize great! Is very soft after rubbing in and lasts a long time! Great value!
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Reviewed in the United States on February 15, 2026
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Damon
San Leandro, US
★★★★★ 3
overall an ok product
Size: 18 Ounce (Pack of 1)
So far, it’s an okay product. It says unscented, but I can clearly smell a subtle light scent. Trust me, I have sensitive smell and skin, and I’ve tried many unscented lotions, but this one has, as I said, a subtle light smell. Overall, though, it is a good product. I’ve just started using it, so I’m hoping it works for me regardless of the subtle scent, which I hope can change because it’s for a good price.
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Reviewed in the United States on April 12, 2026
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Karina
Lowell, US
★★★★★ 5
Very moisturizing
Size: 18 Ounce (Pack of 1)
This is just like the Aveno lotion I used to buy. It feels so soft and hydrating, I do t have to constantly reapply because the moisture lasts a very long time, the scent is light. Long lasting moisturizer. I even used it to refill my current aveno bottle after it ran out to see if my family could tell the difference and they did not. Will be buying again.
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Reviewed in the United States on February 1, 2026

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