Heil Quiet Phone - Noise cancelling headphones

Just arrived from Hamvention 2003 in Dayton: the new Active Noise Cancelling Headphone. Integrated are two small microphones which pick up the ambient noise. With a small differential amplifier this ambient noise is phase-shifted and mixed with the audio. This results in nearly total cancellation of the ambient noise (about 70%). A stunning effect when you wear these headphones for the first time - near absolute quietness.
There are many useful applications: to reduce the local QRM from the contest operator on the next station, cancel fan noise from the PA or the PC blower. Use it on a plane and finally understand the audio from the film. Or use it for a quiet sleep on the airplane because the engine noise is mostly cancelled.
3.5mm stereo headphone plug, fits many radios, CD players and the airplane armrest. An adaptor to 6.3mm phone plug is supplied. Quiet-Phone requires a 1.5V "AA" size battery (not supplied) which allows for about 30hours operation.

Order No.:
QUIET-PHONE 153.47 (149.00) EUR

Yaesu YH-77STA Headphones

Lightweight stereo headphones, excellent comfort, open speakersystem, weight only approx. 200g

Order No.
YH-77STA 54.59 (53.00) EUR

Kenwood HS-5 Headphones

Optimal voice audio response (freq. range 150-4000Hz), 8Ω impedance, exchangeable earpads, weight approx 350g.

Order No.
HS-5 80.65 (78.30) EUR

Kenwood HS-6 Headphones

Lightweight headphone (Mono), Frequency range 100-10000Hz, 12.5Ω Impedance, just approx. 200g.

Order No.
HS-6 48.41 (47.00) EUR