Muslady AMP-14 4-Channel Headphone Amplifier Compact Stereo Headphone Amp with RCA/6.35mm/3.5mm Input Control - Walmart.com
Lake People G105 Headphone Amplifier 2-Channel 15-600 Ohm, sym. | MUSIC STORE professional
Little Labs Monotor 2-channel Headphone Amplifier | Sweetwater
Headphone Amplifier Donner 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-DEL-4 - Walmart.com
Amazon.com: Headphone Amplifier, YGiTK 4 Channels Mono/Stereo Metal Stereo Headphone Amps-4x Quarter Inch and 8X Quarter Inch TRS Headphones Output and 1/4" & 1/8"& AV Audio Input(Including Audio Cable) : Electronics
NEAL PC HEADPHONE AMPLIFIER A-gauge and 3.5mm, 2 channel, mono switch
Alesis Micro Cue Amp - 2 Channel Headphone Amplifier with Power Supply | Reverb
HM2 Dual Channel Personal Monitor Headphone Amp | Miktek Audio