Quality
The Bento 2 is a well-constructed unit, featuring a 1.5mm steel chassis that feels sturdy and roadworthy. Made in Taiwan, where Fredenstein has operated since at least the mid-2010s (with product reviews emerging around 2018), the rack reflects reliable manufacturing standards. Its multi-layer backplane enhances signal integrity, and the universal power supply (90–240V AC, 50–60 Hz) eliminates external power bricks, ensuring what seems like clean power delivery. The rack provides ±16V DC and +48V DC per slot, meeting API standards and supporting power-hungry modules like API 512c or BAE 312A or WA-12.
**DEAL BREAKER ** Neve™ Electronic Noise and Interaction -
There is a range of modules which exhibit problems when used in the Bento 2. A distinct "whine" in the 200-500 Hz frequency range -- not unlike that sound guitar players experience when using non-isolated power supplies with multiple guitar pedals containing "Charge Pump" circuitry (aka: big Strymon pedals and others) -- it's a real deal-breaker for those looking for a universal dock to install any module in. Fortunately for me, I don't own many of these "whiners" (most of my Neve preamps are full size 1073SPX rack mount),
The Neve 1073LB and the Behringer 73 clone, which both use some form of internal voltage inversion to raise the 500 series (plus and minus 16 volt supply) up to their internal operating voltage requirement to support vintage "Class A" designs, exhibit this noise producing interaction. BAE and Heritage 73 500 series, clone users, in dealer-user reviews also report similar problems with "noise". After a lot of analysis and module swapping here in the H.o.T. lab we've determined it is NOT just induced noise from the transformers used in these pieces since heavily transformer based products by RND and Warm Audio function beautifully and quietly in the Bento 2 rack. Both of the Bento 2 1RU racks currently in the HoT gear fleet exhibit this "whining" noise. The Neve™ and Behringer modules don't exhibit these noise issues when used in other 500 series racks (some of which utilize switching power supplies) so the evidence points to the Bento 2 power supply as the culprit for the problem when used with certain modules.
500 series modules (which don't utilize some form of internal power supply inversion) seem to function beautifully in the 1RU Bento 2 but that leaves a "Gotcha" lurking in your rig, waiting for you to unwittingly install one of the affected modules and BAM....... there's that whine we talked about.
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| Four 500 slots in only two rack spaces, click to enlarge |
Features
The Bento 2 is packed with practical features for a 2-slot rack:
- Power Supply: Delivers ample power per slot, with a sturdy, built-in universal A.C. power supply input for global use. Front and rear panel On-Off power switches.
- Audio Routing: Onboard daisy-chaining (slot 1 to slot 2) simplifies signal flow without external cables.
- Compressor Linking: Rear-panel switches enable stereo linking for compressor modules, a rare feature at this price.
- Ground-Lift Switch: Helps mitigate ground loop hum in problematic setups.
- Rackmount and Desktop Flexibility: Includes removable feet for versatile placement.
- LED Indicators: Bright power and signal LEDs.
Rear panel "link" switches, click to enlarge
The Bento 2 has been on the market since at least 2018, based on early reviews, and remains a popular choice for its compact 1RU design and feature set.
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- Affordability: Priced around $275 USD, it’s significantly cheaper than API’s Lunchbox or Radial’s Workhorse, offering excellent value.
- Power Stability: Users report no power issues with demanding modules like API, Midas preamps or RND tape simulators.
- Compact Design: Ideal for small studios or mobile setups, with easy rack-mounting.
- Build Quality: Solid construction and reliable power supply make it a dependable workhorse.
- Versatility: Features like compressor linking and daisy-chaining enhance workflow, especially for stereo processing. The linking is also great for assembling a custom combination of mic preamp and compressor into a single rack space for voice recording and podcasting.
- XLR and TRS: Inputs and Outputs are all balanced and have both XLR and TRS connections on the chassis.
- Front and Rear Power Switches: Easy to kill the power for switching modules.
Dislikes
- Noise with Neve, BAE, Heritage and Behringer 73-style preamps: When you use the Bento 2 with any of these preamps a distinct and loud "whine" will occur.
- Bright LED on Front Panel: My studio is a place of peace, disturbed (at times) by loud guitar amps and banging on drums ;-). I'm often working at 4am and the bright multicolored, LED power supply indicators on the front of the Bento 2 are an annoying distraction - like Carnival Christmas lights - you can put a piece of white tape over them to tone them down but that looks ugly.
Price
At $275 USD (depending on the retailer), the Bento 2 is one of the most affordable 2-slot 500-series racks available. It undercuts competitors like the API Lunchbox or Heritage Audio while offering comparable power and features. For budget-conscious engineers, it’s a compelling option for hosting high-quality modules without breaking the bank.
Fredenstein offers a standard 1-year limited warranty on the Bento 2, covering defects in materials and workmanship.
Easy to Remove Feet for Rack or Desktop Use
The Bento 2’s screwed-on feet are designed for desktop stability but are easily removable with a screwdriver, allowing seamless transition to rackmounting. This process is straightforward, taking less than a minute, and requires a screwdriver.
Reliability
After over a year of use here in the High on Technology lab, the Bento 2 has been reliable, with no power supply failures, overheating, or mechanical issues. The rack’s robust internal power supply and solid construction contribute to its reputation as a dependable choice for specialized 500-series setups. The previously described Neve™ noise interaction could be a deal breaker.
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Is the Bento 2 Noisy? IT CAN BE...see previously covered Deal Breaker
- Physical Noise (in the Room): The Bento 2 is completely silent in terms of physical noise, as it uses a fanless design with no moving parts. There’s no audible hum, buzz, or fan noise, making it ideal for quiet recording environments.
- Signal-Induced Noise (in Modules): The Bento 2 generally maintains a low noise floor, with its multi-layer backplane and stable power supply minimizing signal interference. The only noise problem is the previously described interaction with Neve 73 style preamps, which without schematics and further information can not be proven.
EPILOGUE
We have two of these Bento 2 racks in the High on Technology lab, they're popular and convenient for testing random 500 modules. Personally I love the built-in power supply, no external line lump required but possibly Fredenstein needs to take a look at the power supply design and either add more output isolation or filtering or both to provide universal module (aka NEVE™) support.
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Thanks for reading High on Technology, Good Music To You!
©May 2025 by Mark King, it's not ok to copy or quote without written permission from the author.
Go forth and make beautiful sounds
