Headphone offers from Amazon.com

Earmuff-style hearing protection; easy adjustment for different sizes. CSA approved; 29 dB hearing reduction. Hard plastic casing with soft ear molds, twin cup design minimizes resonance achieving maximum high and low attenuation. Includes 1 set of earmuff hearing protectors (2 ears).
Price: $14.99 [Notify me when price goes down.]

Digital tuning with easy to read LCD display, seek/scan button, memory with preset stations and low battery indicator. Stereo input jack with patch cord for listening to a MP3 player or to a scanner at the racetrack (scanner not included). Convenient on/off switch combined with volume control.. Adjustable stainless steel headband.
Price: $55.99 [Notify me when price goes down.]

Compatible with Bounty Hunter Metal Detectors excluding Bounty Hunter Junior. Utilizes a 1/8-inch stereo plug. Headphones extend metal detector battery life. Padded for comfort.
Price: $27.00 [Notify me when price goes down.]

Advanced digital USB. Noise-canceling microphone. Power switch. Adjustable microphone.
Price: $14.94 [Notify me when price goes down.]

Discreet audio system with subwoofer and 2 satellite speakers. Ideal for computer audio, game systems, and digital audio players. Included wireless remote and control pod allows you to easily control volume, bass, and treble. Isobaric-configured dual woofers deliver big bass sound in smaller footprint.
Price: $59.99 [Notify me when price goes down.]

Voice recognition certified. DNCT4 - Direct Noise Canceling Microphone Technology. Stereo headset. Adjustable headband.
Price: $8.35 [Notify me when price goes down.]

In-Ear Headphones With In-Line Remote Controlled Play, Pause, Fast-Forward, Rewind, Volume & Hold Functions. Is not compatible with the PSP-2000. Is not compatible with the PSP-3000. PSP headphones for listening to games and other audio.
Price: $15.99 [Notify me when price goes down.]

Product Type - Headset. System Components - one piece. Response Bandwidth - Headset: 20 Hz - 20 kHz; Microphone: 100 Hz - 16 kHz.
Price: $12.34 [Notify me when price goes down.]

Active volume hearing protector. Reduces hazardous impulse noises from firearms to harmless levels within 5 milliseconds. Localizes weak sounds and attenuates impulse sounds. Equipped with separate microphone, receiver, amplifier and volume control; powered by four 1-12-volt AAA batteries.
Price: $72.99 [Notify me when price goes down.]

Laboratory Tested to Hearing Aid Standards. Volume Control Wheel Located on the Lead Wires of Headphones and Earbuds. Convenient, Stylish Carrying Case Easily Clips to Pocket or Belt. 45 Minute Auto Shut Off. 2 AAA Batteries Included Provide up to 80 Hours Operation.
Price: $69.95 [Notify me when price goes down.]