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$ 149 .00
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Warm Audio Passive Direct Box

Passive direct box with a custom-wound CineMag USA transformer and -3 to -30 dB pad

Product Description

Whether you play guitar, bass, keyboards or another instrument, you’ll need a direct box that won’t diminish your instrument’s tone, like the Warm Audio Passive Direct Box. Every aspect of this direct box is designed for maximum sonic integrity, from the custom-wound CineMag USA transformer to the rugged metal knob and switches. You can expect a warm, rich tone even after long cable runs, and the extruded aluminum enclosure ensures a long life span. When you need to convert an instrument-level signal to mic-level with sonic quality as your top priority, you’ll be well served with the Passive Direct Box.


  • Frequency Response: 20 Hz to 70 kHz ±0.5 dB
  • THD: 0.01% from 20 Hz to 100 Hz
  • THD: Less than 0.004% from 100 Hz to 20 kHz
  • Input Impedance: 1 Meg Ohms
  • Balanced Output: 600 ohms, mic level
  • Pad: Variable from -3 to -30 dB

Product Specifications

Condition New
Input Connectors 1/4-inch TS
Output Connectors Analog XLR

Product Reviews

5 out of 5 stars.
Review Count (2)

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I got the passive version. Works well with active acoustic guitar. I was
Surprised how well the amp / speaker input sounded on bass guitar. Retaine

By Robert M on May 19, 2021

This is my best passive DI box.    I am already a Warm Audio fan.  I have the WA2MKII Mic Pre in my home studio, and find it versatile with HI-Z input that can act like an active DI. And of course the transformers by CineMag are excellent.  For outside orchestra and group performance work, I prefer a passive DI box. I play on 2 different EVO Digital Accordions from Bugari, with the sound engine built by Roland. Same engine as the Roland V-Accordion FR-8X.   They have the usual HI-Z instrument outputs and somewhat hot audio levels of a Roland keyboard product. I got my feet wet on 2 different Radial DI boxes first, then added a Countryman active DI for a stereo box. A DI box should be required equipment for these V-Accordion instruments (my personal opinion after years of futzing with balancing sound levels with instrument connected directly to mixer or amp).   The Warm Audio passive DI is superior for the tone and warmth.  The CountryMan is a close second, but that is active and is twice the list price of the Warm passive DI. I have not needed (yet) to explore the other features. I am using it with the default settings. Build quality is excellent. And it has the best looks of my DI box collection too. Highly recommended.

By GamaHiFi on January 30, 2020

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
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In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
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The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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