Customer Rating: 
Summary: Effective Office Tool
Comment: I recently spent quite a bit of money on a new Plantronics amplifier headset system. This system was a newer model with lots of dials and the fun red firefly light when one is on the phone. The new unit also had a non coiled cable for ease of use. In theory the new model looked great but in practice I did not like it. I eventually went back to the model pictured on this page. Nothing like the original.
The M series from Plantronics is an excellent, simple and effective office tool. The unit literally connects to any phone that uses a handset. The unit is crisp, clear and plenty loud without power amplification. I also have been very impressed with the headset options for this device.
Pro:
- Cheap compared to other options.
- Quick mute option.
- Easy numbered volume control.
- Few parts, very reliable.
- Small and light.
Negatives:
- Few features. It is what it is.
- Doesn't come with a place to hang the headset.
A great device that was marketed by other companies under there name such as Avaya. I recommend with no reservations.
Customer Rating:
Summary: Mr.
Comment: This is the third Plantronics that I have purchased. I am quite disappointed in the product. It is very difficult to set up and even after that it does a poor job of amplification and creates a buzz or background. I have tried to adjust each one an am very dissatified.
Mike Kidder
Customer Rating:
Summary: Does not last long
Comment: I bought this amp with my headset back in March 2005 and already it stops working. There is no tone coming through the headset and I am really disappointed with the quality of this unit. I'll try to get Plantronic to take a look, but who really needs the hassle? Granted it is used daily in a office environment, but at the price this unit costs, I expect it to work properly in such setting. Instead, it is just another piece of cheap electronic.
Customer Rating:
Summary: Works only with Plantronics headset
Comment: This amp may be "universal" with respect telephones, but it is not universal with respect to headsets. This will work only with a Plantronics headset with a proprietary "quick disconnect" jack. In other words, it will not work with a standard 2.5mm headset jack. I wish I'd known that before I purchased.
Customer Rating:
Summary: Excellent product, works with most digital systems too
Comment: Plantronics has been in the phone business a long time, and it shows in the M12 amplifier. The unit is fairly easy to install. You start by pluggin it into the handset jack on the phone (some digital phone systems like Toshiba Strata Dk will offer an optional headset card - use that as you'll get better phone operation).
You may need 2 AA batteries (or the optional AC adapter), depending on your phone system. Plug in your headset (make sure its compatiable with the quick disconnect plug on the amplifier), and adjust a slider on the side of the amp to select one of five settings (use the one that gives the best quality sound and operation, you won't harm the amp by experimenting). Now you are ready to dial.What makes this a good product? It is easy to install and configure, sound quality is excellent, and plantronics build quality is exceptional. It should last a long time and endure heavy use, even in a professional call center.
One note, this amplifier will not work with dial in the handset phones. Not too many of those around these days, but its good to be aware of it.
