Wireless Headphones Portland OR

Digital Wireless Headphones
SRP: $269

SPECS:
Transmitter
Freq.: 5.8 GHz
S/N Radio (A-weighted): typ. 100 dB
Dynamic range; typ. 100 dB
Channel separation: typ. 100 dB
Harmonic distortion: typ. -90 dB
Audio sampling: 64 times oversampling
Transmitted data rate: >3 Mbps
Operating range: max. 200 ft. line of sign, 50 ft. thru walls
Audio latency: < 1 ms.

Headphones
Type: closed, dynamic
Operating time: max. 100 hour with two AA batteries
Freq. response: 20 Hz to 24 kHz
Maximum sound pressure: 120 dB

Amphony Corp.
824 Rad Street
Lockport, IL 60441
www.amphony.com
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I auditioned and reviewed some time ago Amphony's earlier wireless headphones, the Model 1000. The newer Model 2500 steps up from the increasingly crowded 2.4 Ghz band - where Wi-Fi, microwaves, garage door openers, Bluetooth devices, and who knows what else also operate - to the less-crowded 5.8 GHz range. That alone is a major improvement. The less expensive 1000s are still available from the German-based company. My 1000s weren't picking up other audio signals, but they tended to cut out or make loud annoying scratching sounds in my ears if I tended to move just a foot or two from my position on the sofa; leaving the room entirely to go to a different room resulted in a barrage of noise in the phones. The volume control on the right earpiece also was very noisy to adjust.

If you ever want to listen to music or view a DVD late at night when others in the house are asleep, or if you want to work in a noisy area such as your kitchen or workshop while listening to sounds, you absolutely need a good wireless headphone. And this one is it. The original Mode 1000 had a noisy volume control on the right-hand earpiece, and just a few small moves of the head could result in quite loud static sounds as the connections with the transmitter cut in and out. The Model 2500 has a very wide range of coverage and there is no noise when it cuts out - it just silences.  I was able to go out the front door of my house and walk all the way around it without any cutting out of the signal - just a couple of loud clicks. So once again (come milder weather) I'll be able to sit out on my deck in the sun and read or relax while listening to stereo sources on my main audio system. Bravo that! If you happen to need even greater range than this, Amphony can provide RangeBooster transmitters which extend the operating area even further.

The transmitter has two small bays on the front for charging the rechargeable AA batteries provided with the phones. Four batteries are provided so you can replace two right away when they need it, since complete recharging takes about 48 hours. The two green LEDs on the transmitter l...