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Ultra-Di Di400p High-Performance Passive Direct Injection Box

Ultra-Di Di400p High-Performance Passive Direct Injection Box

Q: Does this work for connecting the sound output from a PC or MP3 player into a PA system using a Stereo 1/8" TRS to Mono 1/4" TS cable?

Yes that should be fine! :) You would also need an XLR to connect the DI Box to the PA.

Q: I want to record digital piano and play live at church. Should I get Pyle-Pro PDC21 for $8 or is this significantly better?

A normal DI box is $50 so I wouldn't go too much lower than this. These seem to work well. I've only had one go bad in the past year or so and I purchased like 8 for my church.

Q: Can this reduce a speaker level signal to a line level signal? E.g. if I wanted to take a speaker level and connect it to a mixer.

YES. The other answers are not accurate. This device as well as many other DI Boxes can make a Line Level 'copy' of the high power signal going to a speaker. This is a common use however this yes comes with a major caveat. The source (1/4 " INPUT) can be a highly amplified signal, such as the speaker output of a 100W guitar amplifier. The output signal (XLR OUTPUT) will be what the mixer wants (Line Level). CAVEAT: There must be a load connected to the THRU (Parallel OUT on this device). This load can be a speaker or speaker load simulator, basically what you would normally connect to the amp. Without a load connected, no signal flows and nothing will be output. Worse yet, without a load connected, many amps will fry. Amp to DI box to Speaker(1/4" OUT) and Mixer (XLR OUTPUT) is commonly used by guitarists. This allows the PA Mixer or Recording Audio Interface to get all the good sound that the guitar signal chain has built, only missing coloring from the speaker cabinet. If needing your speakers to be silent while still getting a good output on the XLR, adding a decent amp Attenuator or Load Simulator after the DI Box can reduce the power reaching the speaker to or near zero. Note: Many higher end Attenuators and Load Simulators have a built in DI Box.

Q: can i use this to hook up my 6505+ to my m-box?

If you have the combo version, it has an XLR out already, so no DI required. The head version doesn't seem to have this option, so you could use the preamp out, but I'm not sure if you could hear a difference between using a DI or running the 1/4" into the line level input of the M-Box. You'll lose the tone you get from the power amp tubes either way. The main point of a DI is to convert a 1/4" instrument signal to a balanced XLR signal if you're going into a stage snake. Effectively running a 50' or 100' 1/4" cable will generally introduce noise and reduce signal quality, so the DI is a great option. I've used this passive DI box in live situations for the past year, and it's worked like a champ. I run my tracks (from an iPod) through it.

Product ID: 2737644

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Details

Brand
Behringer
Speaker Maximum Output Power
3000 Watts
Frequency Response
40 Hz
Connectivity Technology
TRS XLR
Audio Output Mode
Mono

🎸Impedance-matched direct input

🔗Balanced XLR output for noise-free signal

🎚️Thru/Out jack for simultaneous amp & mixer routing

Frequently Bought Together

Behringer Ultra-DI DI400P High-Performance Passive DI-Box

GearIT XLR Microphone Cable (10 Feet, 10-Pack) - XLR Male to Female, Balanced Shielded Cable for Mic Mixer, Recording Studio, Podcast - Black, 10ft, 10 Pack

GEARit Guitar Instrument Cable (15ft 2-Pack) 1/4 Inch to 1/4 inch TS Straight Male to Male 6.35mm Mono Jack with Alloy Connector and Nylon Braid

Description

🎛️ Elevate your sound game—connect like a pro, perform like a legend!

LONG CABLE READY - Maintain crystal-clear sound even over extended cable runs—no more tone degradation or hum.
RUGGED METAL BUILD - Durable, road-ready design built to withstand the demands of professional gigs and studio sessions.
DUAL PATH CONNECTIVITY - Send your instrument’s signal to both your onstage amp and mixer simultaneously with the Thru/Out jack.
PURE TONE ZERO COMPROMISE - Connect guitars or basses directly without losing sonic clarity or high frequencies.
SEAMLESS SIGNAL CONVERSION - Transforms unbalanced line-level signals into balanced mic-level outputs for pristine audio quality.

The Behringer Ultra-DI DI400p is a high-performance passive direct injection box designed to deliver impedance-matched, balanced audio signals from guitars, basses, or other instruments directly to mixers or amplifiers. Featuring a durable metal chassis, balanced XLR output, and a Thru/Out jack for simultaneous amp and mixer routing, it ensures lossless tone and noise-free transmission even over long cable runs—perfect for professional musicians and audio engineers seeking reliable, studio-quality sound on stage or in the studio.

Specifications

Audio Driver Type	Dynamic Driver
Item Weight	0.44 Pounds
Power Source	Corded Electric
Number of Audio Channels	2.0
Speaker Maximum Output Power	3000 Watts
Compatible Devices	Smartphone
Subwoofer Connectivity Technology	Wired
Connectivity Technology	TRS, XLR
Speaker Size	4 Inches
Water Resistance Level	Not Water Resistant
Specific Uses For Product	Audio applications
Controller Type	Corded electric
Color	Black
Is Waterproof	FALSE
Warranty Type	Limited
Mounting Type	ーブルトップマウント
Material Type	Metal
Speaker Type	Outdoor
Additional Features	Amplifier
Recommended Uses For Product	For Smartphones or TabletsLaptop

Have a Question? See What Others Asked

Does this work for connecting the sound output from a PC or MP3 player into a PA system using a Stereo 1/8" TRS to Mono 1/4" TS cable?

I want to record digital piano and play live at church. Should I get Pyle-Pro PDC21 for $8 or is this significantly better?

Can this reduce a speaker level signal to a line level signal? E.g. if I wanted to take a speaker level and connect it to a mixer.

can i use this to hook up my 6505+ to my m-box?

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