ART DTI

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Dual Transformer / Isolater

Hum Eliminator
Frequency response 10 Hz to 50 kHz
THD: 0.01%
2 Channels
Inputs and unbalanced XLR balanced, TRS, RCA
Output as balanced XLR, jack unbalanced, RCA
Dimensions 44.5 mm x 107 mm x 89 mm
Weight 0.34 kg

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since June 2005

Item number 180511

Sales Unit 1 piece(s)

Multi-Channel Unit Yes

Channels 2

Active / Passive Passive

19" No

Pad switchable No

Gnd/Lift switchable No

Speaker Simulation No

959 kr

Including VAT; Excluding kr200 shipping

Sales Rank

in DI Boxes

Dual transformers for superior ground isolation

The name of the ART DTI reflects its core function, with "DTI" standing for "Dual Transformer/Isolator". This passive, amplifier-less audio interface uses two transformers to isolate the grounding of the input and output signals, and this isolation helps prevent hum loops and noise interference that can arise in typical studio, recording, and performance environments. To accommodate various setups, the ART DTI offers three types of connections - XLR, 6.35mm jack, and RCA - available for both stereo inputs and outputs.

Balanced, stereo, stable

The ART DTI's audio transformers have an extremely flat and wide frequency response and can handle high signal levels while maintaining an isolated balanced output, which gives the DTI a very clean and neutral sound with a wide variety of signal sources. These transformers can handle impedances ranging from 600 ohms to 100 kOhms without introducing any loss or gain in level, making the ART DTI highly versatile. With balanced XLR sockets and jack sockets that can accommodate both balanced and unbalanced signals, the interface ensures a consistent, high-quality sound, while its compact, black anodised all-aluminium housing is both durable and visually appealing. And at just over 300g, it is also easy to transport.

For bands, DJs, and small studios

Thanks to its versatile connection options, the ART DTI is a valuable tool for a variety of audio setups. Home recording enthusiasts, for example, can easily connect different equipment to their DAW without experiencing hum loops that affect recording or monitoring quality. The DTI can also provide isolation on long cable runs in a fixed installation, such as in project studios, while bands performing on different stages and connecting their gear to various setups can count on the ART DTI for a quick and compact noise reduction solution. DJs connecting their mobile setups to existing PA systems can in turn enjoy peace of mind, knowing that the DTI will maintain optimum sound quality for their sets.

About ART

The acronym ART stands for "Applied Research and Technology". The aim of the company, founded in 1984, has been to redefine the performance-versus-price barrier in a series of innovative audio products, designed with the needs of the musician in mind. Their large portfolio caters for both the studio and the stage, and has 35 years of experience in the field. Their product range includes digital interfaces and mixers, rack mixers, amplifiers, and monitor speakers, as well as headphone amplifiers, power conditioners, patch bays, and also "intelligent" graphic equalisers, tube preamps, compressors, and of course microphones.

Not just for monitoring and recording

The ART DTI can be used in many different audio systems. It can eliminate humming and ground-loop noises, particularly those around 50Hz, when connecting a computer-based digital audio workstation to monitor speakers. The device is placed between the signal outputs of the audio interface or monitor controller and the audio inputs of the monitor speakers. Anyone who has long cable runs in their home or studio and has encountered unwanted noise from a ground loop will appreciate the enhanced signal clarity provided by the ART DTI. What is more, it ensures safe isolation between audio interfaces and signal sources with their own power supply, making it an excellent choice for mobile setups.

In the spotlight: Ground loops and galvanic isolation

A ground loop occurs when two or more electronic devices or circuits, powered by separate power supplies with different ground potentials (voltages), are interconnected in a way that allows current to flow through the ground connections, forming a continuous loop. This loop allows unwanted equalising currents (current attempting to balance the voltage difference between grounds) to flow between devices, causing noise or interference, especially in audio or signal systems. To prevent this, techniques like galvanic isolation are used. Galvanic isolation refers to the use of non-conductive elements for power and signal coupling, which prevents this equalisation of potential. Transformers, for example, achieve this through inductive coupling, effectively eliminating unwanted hum.

This is what customers who viewed this product bought

464 Customer ratings

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4.3 / 5

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quality

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227 Reviews

Verii 03.02.2019

I bought this device for XLR in, RCA out. Going by specifications it should be able to do this just fine, but it actually introduced noise rather than eliminate it. And not just a little, really loud too. Fiddled around a bit but found no solution. Balanced to SE is not this device's strong point...

For other set-ups it might work very well though. Just sharing my experience with this particular device. Too bad it didn't work too, competitor's transformers are MUCH more expensive!

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Works like should

Kalleks 19.08.2019

Works very well for my configuration. There is no noise and the necessary bandwidth is available. The cable length is approximately 60 meters. An earth connection is a particularly good option.

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Invaluable peice of kit

Johnf52 22.06.2015

I have two of these and will probably end up with more! Hum loops can be a pain when setting up a PA rig in "unknown territory" and it wouldnt be the first time that earth wires have been temporarily removed from mains plugs etc, which whilst solving one problem creates another with regards to potential safety. These little beaties put all that behind us. With just about every possibly combination of in and out through phono, jack and xlr you can isolate 95% of all known audio connections. It is also possible with a little cunning to use it as a balanced signal generator/splitter, by using a short phono to phono link on the input side a single xlr or jack input can be fed to both internal transformers producing two separate, balanced outputs. A trick I have used a few times now.

Sturdy and well built a couople of these should be in every sound techs "goody bag"

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Good DI

Woody.R 08.12.2014

I've used this DI to connect from my digital piano to a mixer and to a monitor speaker. Two channel inputs and outputs: two mono jack outputs from the piano to the XLR inputs of the DI, and XLR outputs to the mixer and the monitor. Removed nasty humming and buzzing to the 'minimum' (didn't quite completely eliminated the unwanted sound). But I can only hear it when I stick my ear right next to the speakers. The only issue I found was since the male XLR cables do not click or lock on the input female channels, they seemed to slip off sometimes which made me to check regularly if they are plugged in properly. But overall happy about the item and the price.

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ART DTI

Dual Transformer / Isolater