Ebtech HE-2
2-channel AC Hum and Noise Eliminator with 1/4" TRS I/O
Get Rid of That Annoying Buzz!
Ebtech's Hum eliminates system noise and ground loops quickly, easily, and above all, safely! Extremely high quality transformers isolate circuits, keeping grounds intact while breaking troublesome loops and balancing unbalanced gear. 1/4" TRS in and out. Features:- Eliminates AC hum and noise quickly and easily
- Automatically converts back and forth between balanced and unbalanced lines
- Allows using professional equipment for long signal runs free of hum
- 1/4" TRS "smart jacks" inputs and outputs
- Safely breaks ground loops while leaving all signal grounds in tact
- No dangerous ground lifting
- Automatically translates signal voltages to match differences in ground potentials, avoiding clipping
- Less than .005% THD @1kHz
- Crosstalk better than -97dB
| Specification |
Detail |
| Active/Passive |
Passive |
| Analog Inputs |
2 (1/4" TRS) |
| Analog Outputs |
2 (1/4" TRS) |
| Built-in Dynamics |
No |
| EQ Bands |
N/A |
| Freq. Response |
20 Hz - 70 kHz |
| Low Cut Filter |
No |
| Pads |
N/A |
| Power Supply |
N/A |
| Rack Height |
N/A |
| Total Channels |
2 |
| Tube |
No |
|
Can We Help?
call toll-free (800) 222-4700 or E-mail us
to get personalized advice from a Sweetwater Sales Engineer.
Solved my "Fantom" buzz problem
by Chuck from Philadelphia
January 10, 2007
Music Background: Professional musician and composer
I recently purchased a Roland Fantom X8 (which has balanced TRS outs) and a Hartke KM200 amp (which has unbalanced inputs) for live gigs. I was getting a slight buzz when my Fantom was connected to t ... read more [+]he amp. I tried a variety of cables, using a direct box, even lifting the ground on the amp--none of which solved the problem. Then I read about the HE2. I now run TRS from the Fantom to the HE2, and TS from the HE2 to the amp. BUZZ ELIMINATED! It now sounds completely clean, and I believe I even get a bit more gain from keyboard. If you have a similar problem, I recommend this product. close [-]
This unit solved a puzzling problem for us
by Steve Meng from Cincinnati, Ohio
April 28, 2008
Music Background: Amateur recording engineer by night, Circuit designer by day
I just installed a new sound system for my church. We have had hum problems before solved by good grounding and using better grade equipment. Now, for the first time none of the former tricks worked. ... read more [+] Lifting safety ground (undesired) only helped some.
All the equipment was thought to be balanced and good Belden cable ran to the amp. A pre-install test had been done to check for crosstalk sensitivity with the nearby AC power lines but the problem only showed up after install. The real problem was traced to an unbalanced amp input! Now what? It was getting late on a saturday and the system was needed in the morning. Then I remembered seeing a so-called hum eliminator box (HE2) another sound guy had left several years ago. It had been used in a noisy video setup, now unused. I had actually tried to use it quickly one time and it did nothing. But... I connected it up and ...silence!! It worked great, the safety ground is now connected again and the system has remained silent with no input. It's a real treat to the ears and hum does not distract from the message. close [-]
Could not be easier!
by Anonymous
November 1, 2005
Music Background:
I have this unit and the rack version in my studio. They fixed all my problems with multiple computers, mixers, and a whole house audio system. No more ground issues with equipment in different room ... read more [+]s on seperate power outlets. Doesn't color your sound either. close [-]
There are better and cheaper options
by Daniel from Knoxville, TN
January 1, 2005
Music Background:
I agree it works, but, compared with an ART CleanBox II, the CleanBox worked better for me, and it is about half the price of the EBTECH's hum eliminator.
Cut out a radio tower's signal from next door
by Ashe (www.ashe.us) from Columbus Ohio
April 1, 2004
Music Background:
We were playing a gig Saturday night at a club that is right next to a radio station's transmission antenna. Most of our amps, etc. were affected, and I couldn't use my wireless mic. Fortuna ... read more [+]tely our sound man got the PA clean by using one of these EBTech Hum Eliminators, it cut the radio station right out. I suppose that makes sense since the ground loop is an antenna that can pick up any signal, not just 60 cycle hum. It worked great. I just wish he had a few more so I could plug it in to my wireless mic system too. Time for me to order one, or possibly the ART Clean Box II, depending on what my salesman (Andy DieKroger) recommends more highly. close [-]
See Also: DI Units
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