SKU: 81654703392

Union Tube & Transistor Lab Compressor

Sale price$103.95 Regular price$115.50
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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

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Description

Union Tube & Transistor Lab CompressorMaker: 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 best compressor pedal I've ever heard." - Bob Rock

 

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 81654703392

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Reviewed in the United States on November 18, 2025
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Vermont Tool Man
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★★★★★ 5
A nice sized wallet for front pocket keeping, holds the essentials & more quite well
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Reviewed in the United States on December 20, 2021
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HarleyD 04
Carnegie, US
★★★★★ 5
Supple leather with a compact design.
Size: One Size, Color: Black II (Money Clip), Size: One Size, Color: Black II (Money Clip)
This is exactly what I was looking for and the price??? Unbelievably low. I saw a Carhartt one that I liked, but I didn’t care for the waxy look of leather on it so I looked on their website and they only offered it in that. I searched front pocket wallet on Amazon and I purchased this. It is a higher-quality leather, the price tag inside says $55. I paid under $18. The one thing I did like about the Carhartt one, it had a magnetic strap for the cash where as this one has a fixed money clip, but I see no problems with the design. Very minimalist design.
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Reviewed in the United States on August 16, 2025
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Cam DiNunzio
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Timberline pocket Wallet
Size: One Size, Color: Brown (Money Clip) 2
good deal excellent product
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Reviewed in the United States on July 22, 2025
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Jeff
Bozeman, US
★★★★★ 5
Second Best Bifold I’ve Owned
Color: Black
I’ve gone through a lot of wallets over the years (cheap ones, expensive ones, slim cardholders, you name it), and this Timberland bifold with the attached flip pocket is easily the best all-around wallet I’ve ever carried. The leather is excellent: full-grain, soft right out of the box, and it’s aged beautifully in just a few months with a rich patina that actually looks better with every scratch and scuff. Build quality is top-notch: tight, even stitching, no loose threads, and the edges are finished cleanly. Four months of daily front-pocket carry and it still looks practically new. Layout is perfect for me. Six card slots plus the two slip pockets behind them handle everything I need (10 cards + a few folded bills) without getting bulky. The attached flip ID window is a game-changer; I keep my driver’s license and work badge there and can show either in seconds without opening the wallet. Cash fits easily in the full-length bill compartment. It’s genuinely slim for a traditional leather bifold, sits comfortably in both front and back pockets, and never feels like a brick. The embossed Timberland logo is subtle and classy. At this point I can’t imagine switching to anything else. It’s durable, functional, looks sharp, and was a fraction of the price of some “luxury” wallets that didn’t last half as long. If you want a classic leather bifold that actually delivers, this is it. 100% recommended; already planning to buy another as a backup.
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