Your search for headphone amp returned the following:

Headphone amp/USB DAC/stereo preamp (Silver)

LOW STOCK

10 people say 

• low-distortion, high-current headphone amplifier
• built-in high-resolution DAC — 96kHz/24-bit for USB and 192kHz/24-bit for optical and coaxial
• USB, coaxial digital, optical digital, and analog audio inputs
  

Headphone amp/USB DAC/stereo preamp (Black)

IN STOCK

10 people say 

• low-distortion, high-current headphone amplifier
• built-in high-resolution DAC — 96kHz/24-bit for USB and 192kHz/24-bit for optical and coaxial
• USB, coaxial digital, optical digital, and analog audio inputs

Vacuum tube headphone amplifier/USB digital-to-analog converter

OUT OF STOCK

4 people say 

• vacuum tube input stage for smooth, detailed sound
• built-in USB DAC for connecting to a computer
• stereo RCA analog input

Headphone amplifier (Black)

IN STOCK

4 people say 

• low-distortion headphone amplifier
• gold-plated stereo RCA audio inputs and outputs
• full-size 1/4" stereo headphone output

Headphone amplifier (Silver)

IN STOCK

4 people say 

• low-distortion headphone amplifier
• gold-plated stereo RCA audio inputs and outputs
• full-size 1/4" stereo headphone output

Vacuum tube headphone amplifier

LOW STOCK

1 person says 

• hybrid tube/solid state design for powerful, detailed sound
• dual-chassis design with separate headphone amp and power supply blocks
• high-output capability ideal for high-performance headphones

Stereo headphones with built-in bass amplifier

IN STOCK

1 person says 

• built-in amplifier delivers powerful bass response
• control wheel on right earcup provides phone, track and volume control for iPod®, iPhone® and iPad®
• blue LED light around control wheel

USB digital-to-analog converter/headphone amplifier

IN STOCK

1 person says 

• TI PCM5102 digital-to-analog converter for high-fidelity stereo sound
• built-in high-quality headphone amplifier with volume control
• USB (Type B) input; RCA audio output

USB digital-to-analog converter/headphone amplifier

IN STOCK

1 person says 

• USB powered, no batteries or external power supplies needed
• minijack headphone and line-level audio outputs
• easy setup — no additional software required

Plug-in asynchronous USB digital-to-analog converter

IN STOCK

12 people say 

• 24-bit/96kHz ESS Sabre™ digital-to-analog conversion chip
• asynchronous USB data transfer for reduced timing jitter and better sound
• 3.5mm stereo minijack provides direct headphone connection, plus fixed or variable line-level output