Cleanly transform your signals from unbalanced to balanced with the DB425 Four-Channel DI from Rolls, a passive DI box that can easily convert any line- or instrument-level signal to balanced without the need for external power. The DB425 employs a specially designed nickel-laminated transformer to transform signals with studio-quality signal integrity.

The DB425 features eight 1/4" inputs arranged in four pairs, allowing you to freely transform stereo or mono signals, and each input pair includes a dedicated button for switching between line level and Hi-Z instrument level. Four balanced XLR male outputs let you send your balanced signals to mixers, interfaces, PA systems, and other balanced systems with ease. Finally, a ground-lift switch helps to eliminate grounding issues that generate noise and hum, a useful feature for any audio environment, from live stages to pro studios. The DB425 sports a rugged design for dependable use over many years, and is built in the USA to meticulous standards.

For Studios, Broadcast, and Stage Use    Line- or Instrument-Level Operation    Eight 1/4" Inputs    Four Balanced XLR Outputs    Special Design Nickel-Plated Transformer    Fully Passive Operation, No Power Needed    Ground-Lift Switch Eliminates Noise    Rugged Design, Made in the USA

Related Questions and Answers

Q: 1. I'm looking for blend a piezo pickup and condenser mic both mounted on double bass. Does this will works?

A: It might. Give it a try. It is a returnable item.

Q: 2. Will this take the left and right trs input and convert it to rca left and right output?

A: Yes

Q: 3. Can I add a non Condenser mic and just use one of the port as a pass through no phantom power required?

A: No you can't. This is an active device it is always passing current whether you use phantom or not. If you plug a dynamic into it the capsule will burn out in time.

Q: 4. Can I run the output into an unbalanced recorder?

A: No problem - just adapt the XLR output from the ROLLS to the required input on your recorder.

Q: 5. How long do the batteries last?

A: Our customers report 2 to 4 hours continuously depending upon the microphones used.

Q: 6. Can this be used to control volumens and outputs to different zones like attenuators such as the AT 100D? And if so, in what other ways would make it better?

A: Thank you for your question. This unit has four stereo rca inputs with separate zone selector switches for each of the 4 zones. you can control the input and output volume from each channel and zone.

Q: 7. Vendor/installer inserted a device (magna?) to route all components into a graphic equalizer, then out to speakers. That worked, but it introduced a faint flutter into the output. Even when all components, including the tuner/amp are powered down, if the 'magna' has power to it the flutter remains. The Rolls is said to eliminate flutter, not hum. Is that true? Is there a better device to use with the equalizer, designed for flutter as wells as hum? or just flutter?

A: The Rolls HE18 will only remove buzz and hum.

Q: 8. 2 Qs: 1) Does this add any coloration to the signal; 2) will this work passively while it is powered down? One of the mics I'd be running through it is a Warm WA 47, which doesn't need the phantom power. I want to be sure that I can either go through the powered-up Rolls without it affecting the signal, or turn the Rolls off and just pass through it in passive mode. Sorry for the complicated and poorly phrased question!

A: The Rolls MX310 MorMics 3-Channel Mic Mixer/Combiner requires a power supply to function and is not passive. It does not specify any features that would color the signal specifically, however most electronic circuitry will typically influence the audio signal in some manner, typically minimally.

Q: 9. Will it work for 120hz signals? I have a buzz from my turntable and I have tried almost everything and I'm still getting a buzz

A: This style of buzz eliminator is designed for 50 to 60hz.

Q: 10. If I input a 3.5mm mic will that get phantom power, and if so, how much, or is it just through the XLR connections?

A: Phantom power is provided through an XLR connection only. Mics that require power with a 3.5mm jack usually require plug in power which is approximately 2 - 5 volts. The MX310 is not able to provide this power.