ART DTI 2-channel Hum Eliminator

2-channel Hum Eliminator with XLR, 1/4", and RCA Inputs and Outputs
ART DTI 2-channel Hum Eliminator image 1
ART DTI 2-channel Hum Eliminator image 1
Sweetwater Savings: $15.00 MSRP: $75.00
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ART DTI 2-channel Hum Eliminator
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Eliminate Ground Loop Noise in Any Audio Signal!

No audio tool kit would be complete without the DTI! This Dual Transformer/Isolator eliminates noise (or "hum") in sound systems that is caused by ground loop effects. The DTI has multiple I/O options so you won't have to search for cables or adapters!

ART DTI Dual Transformer/Isolator at a Glance:
  • Eliminates ground loop noise without affecting signal
  • XLR, 1/4" and RCA I/O makes connections easy
  • Sturdy all-aluminum case requires no power
  • Works great in any studio, live sound or fixed installation

Eliminates ground loop noise without affecting signal
The DTI is a high-quality totally passive audio interface that uses two high-performance transformers to totally separate input and output signal grounds, thereby isolating two systems and reducing hum and ground loop noise. The DTI's audio transformers have an extremely flat and wide frequency response and can handle high signal levels while maintaining an isolated balanced output. This gives the DTI a very clean and neutral sound with a wide variety of signal sources. The transformers are wound for 1:1 unity gain and are designed to be used with impedances from 600 Ohms to 100k Ohms.

XLR, 1/4" and RCA I/O makes connections easy
What further sets the DTI apart from other isolation boxes is its connection versatility. It provides XLR, 1/4" phone, and RCA type phono connections on all inputs and outputs. This allows the DTI to easily fit into virtually any audio system and be the clean patch point between all types of systems.

Sturdy all-aluminum case requires no power
The DTI's compact black anodized all-aluminum case will stand up to the rigors of road use. Thanks to its passive design, you don't need to worry about power connections. This box will provide years of trouble free service!

Works great in any studio, live sound or fixed installation
Whether you need an interface between a computer-based audio workstation and your monitors, isolation on long cable runs in a fixed installation, isolation of a signal source from your recording equipment, or in many cases, just a safer connection between two audio systems, the DTI can accommodate. In live sound, permanent/fixed installations, DJ booths and virtually any PA application, the DTI's full feature set, rugged construction, and high-end specifications make it an audio essential!

ART DTI Dual Transformer/Isolator Features:
  • Eliminates "hum" and ground loop noise
  • Anodized aluminum case for long-lasting service
  • XLR, 1/4" phone and RCA inputs and outputs
  • High-quality dual transformers with flat, wide frequency response
  • Does not degrade audio signal
The ART DTI is an essential audio tool!

Additional Media

DTI Spec Sheet

Tech Specs

Type Passive DI/Hum Eliminator
Channels 2
Inputs 2 x XLR, 2 x TRS, 2 x RCA
Outputs 2 x XLR, 2 x TRS, 2 x RCA
Height 1.75"
Depth 3.5"
Width 4.2"
Weight 0.75 lbs.
Manufacturer Part Number DTI

Customer Reviews

Based on 13 reviews
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Annoying Hum Annoys No More!

Everyone kept telling me a had a hum in system I but didn't know what to do about it. I'd tried everything I could think of but nothing seemed to help. Then I did some research and discovered the ART DTI and thought it might be answer to my prayers. After talking to a tech at Sweetwater he assured me this would be my last and best shot at solving my problem and advised me it was backed by their 30 day guarantee and if for any reason I wasn't satisfied I could return it. So with everything to gain and nothing to lose I made the purchase and boy am I glad I did. I would highly recommend the ART DTI to anyone having a problem with a hum in their setup and thanks to Sweetwater for their excellent service and products.
Music background: Musician / KJ

Excellent for PC based setup

Initially did not remove all, but most of the noise, was pretty blown away by the difference but still had some noise at higher levels, which together with this device, and some tips on rearranging USB devices (I happened to group my USB input devices into one powered hub I also put the USB mixer on the same hub to see and have not removed it, also makes it easy to switch it all to laptop which has always been black-as-space quiet, and put it all into a different port on the motherboard of desktop PC)... Anyway, the PC is built with gaming as a primary use, one of my pastimes. It is big, super noisy, etc. Was getting a lot of interference in the monitors. Just dreadful, had to turn the monitors way way down to make them usable. Now I can play games with my video overclocked at any level and there is no noise. Before the whining and the whirring and the mouse movements had my yamaha monitors at one notch up from minimum to get the noise low. This was with everything plugged into a basic furman; ear splitting, migraine/fatigue inducing digital noise. Now the Yamahas are in the "optimal" (the owners manual) position at center detent. I put it between USB mixer speaker output and monitors, and used it to convert final length to XLR for good measure, since the small behringer I am using does not have XLR out. The noise from the desktop PC has been eliminated, by using this device, and refining the machines USB port arrangement as described above. Could not be more satisfied with the result this device has helped me to achieve, and must BUMP the potential solution of rearranging/consolidating USB devices and/or using different port(s). As for potential overall fidelity or signal degradation; any sonic signature characteristics that may be compromised, are easily outweighed by the fact that now it is *useful* rather than disgustingly tedious and/or uninspiring. End result, sounds way way better. More bluntly, before I had an incomplete, even broken experience, now it is fixed.
Music background: modest guitar & piano, sing

Problem slover

We use several of these in a 40-year old school cafeteria with a 'filthy' power supply -- mixing board is in back, powered monitors in front, and speakers/amps for the front of the house. These boxes, in conjunction with some isolated power boxes have significantly cleaned up the annoying 60 cycle hum that was hard to get rid of.

Totally Works!

This is my second one. My 10 year old one still works perfectly [home studio], but I needed one for my home entertainment set up. The DTI totally eliminates ground hum.

Great purchase, with warnings

I purchased this box to go between my computer and my speakers. I had noticed ground hum on the line and, after various troubleshooting methods, I settled on this box. The effect was very dramatic, like someone just turned off a switch. The warning, though, comes with the fact that this box solves a very specific problem. Later, I switched computers and found that this box in the loop actually *added* noise. Then I installed a Furman M8S power sequencer to the setup and the box was totally ineffective, requiring me to use a ground lift to get rid of the noise. The bottom line is that the box is worth its weight in gold to solve the problem it was designed for, but if that is not your problem, then this is not a bad product, just the wrong product for the job.
See also: Direct Input Boxes, ART, ART Direct Boxes