Samson QH4 4-Channel Studio Headphone Amplifier + Headphones + Stereo Interconnect Cable - Top Kit | Reverb
Audio-Technica ATH-M50x Professional Studio Monitor Headphones (Black) Bundle with Blucoil 4-Channel Headphone Amplifier, Aluminum Headphone Hook, and Slappa Full-Sized HardBody Pro Headphone Case
AKG HP4E 4-Channel Headphones Amplifier
Buyr.com | Over-Ear Headphones | Sony MDR7506 Folding Professional Closed Ear Headphones with Knox Gear Compact 4-Channel Stereo Headphone Amplifier Bundle (2 Items)
PreSonus HD9/HP4 Pack Headphone Amplifier with Headphones Headphone Monitoring Bundle, with 4 x HD9 Closed-back Headphones, and HP 4-channel Stereo Headphone Amplifier - Musical Garage SCH
AKG K72 Closed-Back Studio Headphones Bundle with Knox 4-Channel Amplifier - Walmart.com
Cadillac Escalade Platinum (3/4 channel) Headrest DVD player Wireless Headphones - AudioVideo2go.com
Fifine Headphone Amplifier 4 Channels Metal Stereo Audio Amplifier,Mini Earphone Splitter with Power Adapter-4x Quarter Inch Balanced TRS Headphones Output and TRS Audio Input for Sound Mixer-N6
Hi-Fi 4 Channel Headphones 5944 Speaker-P JVC - Victor Company
Studio Bundle w/4) Rockville PRO-M50 SR Headphones+4 Channel Headphone Amplifier - Rockville Audio
Samson SR550 Closed-back Studio Headphones Bundle with Behringer MicroAMP HA400 4-channel Headphone Amplifier | Reverb
Mackie 402vlz4 4-channel Ultra Compact Mixer With Headphones And Cables : Target