SKU: 90047666112

Union Tube & Transistor Lab Compressor *Beancounter Edition*

Sale price$94.47 Regular price$104.97
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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: 90047666112

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4.1 ★★★★★
Based on 11 reviews
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Verified Purchase
niresha allen
Belleville, US
★★★★★ 5
Awesome
Organization is good fit for all my jewels
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
S
Verified Purchase
Stephanie Ann
Louisville, US
★★★★★ 5
Small But Mighty — The Best Travel Jewelry Case I’ve Ever Used
Color: Glitter White
This Hatori travel jewelry box is honestly the best little jewelry organizer I’ve ever owned. I don’t know how it works its magic, but it somehow fits so much jewelry and still looks tiny and compact. Go figure. Size & Portability: It’s the perfect size—small enough to toss into a suitcase, carry-on, or even a purse, but big enough to hold everything I need for a trip. Lightweight, sturdy, and it takes up almost no space. Storage Layout: The double-layer design is genius. Bottom: 7 ring rolls + 3 removable compartments (I love that I can move them around depending on what I’m packing). Top: 5 hooks and an elastic pocket to keep necklaces from tangling—YES, it actually works. Everything stays in place, nothing gets tangled, and it looks beautifully organized when you open it. A travel miracle. Quality: The glittery white PU leather exterior is sturdy and cute, and the interior is lined with soft velvet that protects everything. The clasp is easy to use and feels secure—no accidental openings in your suitcase. Why I Love It: It’s compact, durable, organized, and honestly just adorable. Perfect for travel, but also great for keeping your everyday jewelry together in a drawer. If you travel at all—or just like your jewelry organized—this little box is worth every penny. It packs a punch for its size.
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Reviewed in the United States on November 27, 2025
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Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 5
Great box for traveling or your safe!
Color: Black
The Travel Jewelry Box is a must-have accessory for anyone who loves to accessorize on the go. This compact yet versatile organizer is the perfect solution for keeping your favorite jewelry safe, secure, and tangle-free while you travel. Let's start with the design. The Travel Jewelry Box is intelligently crafted to maximize space without sacrificing functionality. Despite its compact size, it features multiple compartments, pockets, and hooks to accommodate a variety of jewelry pieces. From earrings and rings to necklaces and bracelets, there's a dedicated spot for everything, ensuring that your jewelry stays organized and protected during transit. Durability is another standout feature of this jewelry box. Constructed from high-quality materials like faux leather or sturdy fabric, it's built to withstand the wear and tear of travel. The exterior provides a layer of protection against bumps and scratches, while the interior is lined with soft velvet or plush fabric to prevent your jewelry from getting damaged. One of the things I love most about the Travel Jewelry Box is its versatility. Whether you're jet-setting across the globe or simply heading out for a weekend getaway, this compact organizer is the perfect companion. It easily fits into your carry-on luggage, purse, or backpack, ensuring that your precious jewelry is always within reach. And with its sleek and stylish design, it adds a touch of elegance to your travel ensemble. But perhaps the best part about the Travel Jewelry Box is its practicality. It's designed with the traveler in mind, featuring thoughtful details like a secure zipper closure, removable compartments, and a compact size that fits easily into any travel bag. No more digging through tangled necklaces or searching for lost earrings – with this jewelry box, everything has its place, making it easy to find and access your favorite pieces whenever you need them. In conclusion, the Travel Jewelry Box is a game-changer for anyone who wants to travel in style without sacrificing the safety and organization of their jewelry. With its smart design, durability, versatility, and practicality, it's a must-have accessory for jet-setters, weekend warriors, and anyone in between. Trust me, once you experience the convenience of the Travel Jewelry Box, you'll wonder how you ever traveled without it!
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Reviewed in the United States on May 29, 2024
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Verified Purchase
Becca- Honest Vine Voice
Fort Morgan, US
★★★★★ 4
Great travel jewelry case
Color: Black
Great colors. Good size. Easy to pack and carry. Fits a good amount of jewelry. It’s decent quality. I know there is better out there but for the value it’s great. It snaps close and I haven’t had mine accidentally come open at all. The inside is soft. My necklaces did get a little tangled inside but not too bad. I could have put them in there better. Very nice though.
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Reviewed in the United States on January 21, 2025
K
Verified Purchase
Kristin
Carnegie, US
★★★★★ 5
Store it all!
Color: Pink
This is a compact, light weight, efficient, and sturdy/convenient way to securely store jewelry. The small compact case allows jewelry from earrings to necklaces to bracelets and rings to be all together without being tangled and/or on top of each other. I have more earrings than rings so I used the ring area to store the rest of my earrings. The tight clasp allows the lid to be fasten snuggly to the body of the case. The price was right considering what other stores were charging. I chose the pink case which is a very soft pink, as like the case, but there are other colors to choose from. The case is mobile and would stand strong in a carry on case or bag. I highly recommend this item if you are looking to organize and have your jewelry neatly and safely all in one place!
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Reviewed in the United States on May 3, 2026

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