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Jensen Transformers PO-2XX
ISO-MAX Stereo Audio Line Output Isolator 1 to 1 Ratio (Formerly DM2-2XX)
Jensen Transformers PO-2XX ISO-MAX Stereo Audio Line Output Isolator
1 to 1 Ratio
The Jensen Transformers PO-2XX Dual Line Output Isolator provides an elegant way to avoid ground loop problems while driving balanced or unbalanced inputs from either balanced or unbalanced outputs. Gold-contact DIP switches provide maximum grounding configuration flexibility, solving equipment problems.
Built with 80 percent nickel transformers, the PO-2XX offers excellent performance when used with the relatively high output impedances that are common in consumer electronic gear. This ISO-MAX has no input or output cable length restrictions.
The standard connector configuration is XLR to XLR, but you may also specify any combination of XLR, RCA, 1/4" Phone Jack or BNC connectors. You may also choose the "None" option if you prefer to use the barrier strip alone.
Here are the audiophile-quality specifications:
- Distortion 0.004% typ. at 20 Hz and +4 dBu output level
- Wide bandwidth: -3 dB at 0.10 Hz and 15 MHz
- Handles levels up to +22 dBu at 20 Hz and +26 dBu at 30 Hz
- Excellent time domain performance: DLP 0.3E typ. 20 Hz to 20 kHz
- Integral ground option switches solve other equipment problems
If you're not sure which model to choose, please check out our Jensen Transformers Application Guide.
With inferior products coming from all over the world, we think it is a genuine treasure to find a company like Jensen Transformers, actually designing and manufacturing some of the finest products in the world, right here in the USA, and we are proud to be able to offer their products. The PO-2XX is made in the USA, is backed by the manufacturer's comprehensive one-year warranty, and has a remarkable 20-year warranty on the transformer device itself.
Ground Loops?
(or why the best planned systems sometimes sound bad)
It is a subject that is seldom discussed in manufacturers publications, or even in magazines of the trade, but ground loops can happen even in the most carefully planned audio system.
When devices in the same system are powered by separate power sources, that can cause a difference in ground potential between the two pieces of equipment. It can be because one of the circuits is loaded more heavily than the other, or because one run is longer than the other, or any number of other reasons that are beyond the scope of this article, but the result of this difference in ground potential is commonly referred to as a ground loop.
Mixing balanced equipment with unbalanced equipment by using passive adapters or cables often exasperates ground loop problems.
The Solution
The Jensen Transformers PO-2XX is elegant in its simplicity. Simply insert the PO-2XX anywhere in the signal path and immediately, the effects of the ground loop become a non-issue. Problem solved. There are not too many things that one can install in an audio system that can provide so much improvement with so little effort.
Don't Forget the Cables!
Good cables are very important in the fight against hum and noise. You will need at least one short patch cable in order to insert the PO-2XX into your signal path, and you may want to consider upgrading your existing cable(s) as well. The PO-2XX does not include any cables, but if you need them, we have some excellent audio interconnect cables available. Please click here to see them!
Jensen Transformers' Description
Jensen Transformers PO-2XX
Stereo Line Output Isolator, 1 to 1 Output Ratio
The Model PO-2XX provides over 100dB of common mode isolation at 60Hz. Transformer isolation allows any type of output driver to be connected to either balanced or unbalanced inputs without causing loading or instability problems.
Features:
- Ruler flat frequency response preserves "Audiophile Quality" signals
- High-Grade Nickel-Iron-Molybdenum alloy cores for extremely low distortion
- High quality gold plated connectors for long term reliability
- Available with a choice of XLR, RCA, 1/4" Phone Jack or BNC connectors
- Unpluggable screw terminal strip for easy "Home" to "Road" changeovers
- Convenient 7.0" W x 3.5" D x 1.6" H. dimensions allow rack tray or rail mounting
- Gold Contact DIP Switches allow for flexibility in grounding configuration
Here is a peek inside the device.
In this application example, a PO-2XX is connected at the output of a mixer, instantly eliminating hum and buzz caused by ground loops.
Here the PO-2XX is inserted into the signal chain between two consoles, breaking the ground loop and eliminating noise while easily handling huge bass transients without distortion.
Here is the datasheet in PDF format.
Why Cable Solutions?
- Cable Solutions is an Authorized Jensen Transformers Distributor, so our customers are ensured full warranty protection and technical support. (Jensen Transformers is obligated to provide neither warranty nor technical support for products purchased from unauthorized resellers!)
- We stock this item locally so that it will be ready for immediate shipment, and no one works harder than we do to get your order shipped out to you fast! On business days, orders that are funded by noon will ship the same day. Orders funded on weekends or holidays will ship the next business day.
- Customer service is our first priority. We do our best to help you find the best solutions for your particular application. We're enthusiasts too, so we know what it's like to wait for cables and accessories that are needed to hook up new gear. We also know how important it is to be able to get a response when you need help, so you'll often find us working long hours in an effort to get you the answers that you need.
- If you have had enough of outsourced support or worse yet, companies that do not even publish a phone number or a functional email address, we think you will be absolutely delighted that you found our company. We know how important it is to be able to get help when you need it. That's why we have people, right here in Texas, ready to respond to your email or answer your phone call. If English is your language of choice, you will have the simple pleasure of communicating with people whose first language is English. Granted, if you call on the phone, you may detect more than a trace of a Texas accent, but that is to be expected when dealing with a family-owned business run by native Texans. We sincerely hope that you will find our heritage of courtesy, honesty, and an ethical way of doing business to be a refreshing experience.
Design excellence, high quality materials, meticulous workmanship, and superior service...put it all together and you get a superior product. Don't get stuck with bad advice, poor service, slow shipment or an inferior product. If you want the best, here it is.