Pricing and availability

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Average Price: $1,194

Standard/Professional

$599

$2000+

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Price History

Based on price data from 3 merchants for "API 500-6B HC Lunchbox 6-Slot Powered 500 Series Frame". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Experience the freedom of modular creativity with the API 500-6B HC Lunchbox 6-Slot Powered 500 Series Frame. This portable powerhouse is the perfect entry point into the world of API's legendary audio processing. Designed to house up to six API standard-format modules, this lunchbox lets you customize your recording setup with a mix of preamps, EQs, and compressors, tailored to your unique sound needs.

The 500-6B features an internal power supply that includes a 48-volt phantom power bus, ensuring your modules are always ready to perform. Its rugged steel chassis is built to withstand the rigors of studio and on-the-road use, while the rubber feet and sturdy carrying handle make it easy to transport from session to session. Whether you're working in a professional studio or recording on location, the API 500-6B provides the flexibility and reliability you need to capture amazing sound.

Dive into the modular world with confidence, knowing that the API 500-6B's built-in power rail LED indicators will keep you informed about your setup's status. Its DB-25 connectors and XLR inputs make it a breeze to integrate with your existing gear, providing seamless connectivity for a streamlined workflow.

Key Features:

  • Holds up to 6 API standard-format modules
  • Internal power supply with 48-volt phantom power
  • Rugged steel chassis with rubber feet and carrying handle for portability
  • DB-25 connectors and XLR inputs for easy integration
  • Power rail LED indication for system status
  • Self-powered; 100 to 250 Volts switchable, 47 to 63 Hz

Product specs

Number of Slots 6
Inputs 8 x XLR, 1 x DB-25
Outputs 8 x XLR, 1 x DB-25

FAQs

How many modules can the API 500-6B 6-slot 500 Series Lunchbox hold?

The API 500-6B Lunchbox can hold up to six API standard modules, making it ideal for building a compact and versatile outboard processing setup.

What type of connections does the API 500-6B Lunchbox offer for input and output?

The API 500-6B Lunchbox provides 8 XLR inputs and outputs, as well as a DB-25 connector for easy integration with other studio equipment.

Is the API 500-6B Lunchbox suitable for portable recording setups?

Yes, the API 500-6B Lunchbox is designed for portability, featuring a rugged steel chassis, rubber feet, and a carrying handle, making it well-suited for remote recording sessions.

Does the API 500-6B Lunchbox include a power supply?

Yes, the API 500-6B Lunchbox comes with an internal power supply that is switchable between 100 to 250 volts, ensuring compatibility with various power standards worldwide.

Can the API 500-6B Lunchbox be rackmounted?

Yes, the API 500-6B Lunchbox can be rackmounted with the optional rack ears, allowing for easy integration into existing studio rack setups.

Wayne.wav

Wayne.wav

How to Install a 500 Series Module

Video thumbnail for How to Install a 500 Series Module by Wayne.wav

How to Install a 500 Series Module

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Reviews

PROS

  • Exceptionally durable, often described as "tank tough"

  • Built-in high current linear power supply ensures stable operation

  • Combination of XLR and DB-25 connectors for flexible signal routing

  • Portable design allows easy transport and versatile placement

  • Easy module swapping for quick configuration changes

  • Made in the U.S.A., ensuring high-quality craftsmanship

  • Sleek design enhances studio aesthetics

  • Highly reliable, offering consistent performance over time

CONS

  • None

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about API 500-6B HC Lunchbox 6-Slot Powered 500 Series Frame.

Features and functionality

  • The API 500-6B HC's power supply is noted to be less robust, impacting performance in power-hungry applications and potentially introducing noise in certain setups.

    Source
  • Intermittent white-noise crackle occurs even when modules are not connected, suggesting issues beyond typical noise floors or analog hum.

    Source

Comparisons

  • The Rupert Neve R6 is preferred over the Lindell 510 due to its superior power supply, eliminating oscillation issues experienced with the Lindell.

    Source

Other

  • API's original 500 series specs were updated due to power limitations, which affected compatibility with newer power-hungry modules, leading to the creation of the 51x standard with an additional 24v rail.

    Source
  • The API 500 series format might limit headroom due to rail-to-rail voltage constraints, affecting dynamic response and opamp performance in demanding modules.

    Source

Setup and maintenance

  • The new power supply in post-2007 units (serial number 501.2352 and higher) is designed to address insufficient mA issues, but noise persists even when modules are removed.

    Source
  • Testing the unit in different locations can help isolate power supply stability issues related to environmental factors, not just internal faults.

    Source

Build quality

  • Potential issues with power supply components like inductors, diodes, or transistors could cause noise, pointing to internal component faults or grounding issues.

    Source

Critic Reviews

Choosing A 500-series Chassis

soundonsound.com

The API 500-6B HC Lunchbox shines with its portable design and built-in power supply, making it a convenient choice for on-the-go setups. It’s praised for keeping studio clutter to a minimum, with a compact form that houses six slots and provides phantom power when needed. However, potential buyers should be cautious about possible audio interference when using internal power supplies, particularly with sensitive modules. While the API Lunchbox offers a reliable solution for many, those with larger power demands or looking for absolute flexibility might consider external power supplies. Overall, it's a solid option in the 500-series market, offering a good balance of economy and functionality.

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