Inline headphone amplifiers in comparison

Bi-directional Switcher --- The 3.5mm Switch Allows You to Easily Choose Between Two Audio Input and Get an Output, or Between Two Audio Outputs to Receive an Input, With Switch Button to Easy to Use (NOTE Only One Device Can Be Output at a Time, Please Select Your Desire Using the Switcher Knob)

Dual ESS SABRE ES9219C DAC chips, which lowers jitter significantly The Portable DAC DT03 is equipped with dual ES9219C chips. It has great signal-to-noise ratio of 119dB and the distortion as low as 0.0006% on the 4.4mm balanced output. With the dedicated high-precision clock crystal oscillator module, DT03 bypasses the built-in clock on the USB interface, which lowers jitter significantly.

Wide Compatibility This headphone amplifier supports a wide range of high impedance 16 300 headphones. With 3.5mm AUX input and output, it ensures clear quality audio and eliminates noise, allowing you to enjoy premium sound.

Compatible with a CD player, clock radio, smartphone or any device fitted with a 3.5mm headphone output

AKM AK4377 Chipset 7HZ SEVENHERTZ 71 adopts AKM's AK4377 chip to process digital signals. It is smaller than other chips and uses 36-pin CSP packaging, which requires less space on the circuit board. The upgrade AK4377 chip can analyze each format audio signal. For better sound quality, a 32-bit digital filter is integrated into the circuit, allowing a lower distortion rate and a wider sound field.

MAX4410 Headphone Amplifier Board Headset Amplifier

Global 10-band PEQ - Thanks to the FiiO s self-developed adjustment algorithm, get access to a high-quality PEQ easily adjustable through the app or the web*

2 Stage Gain Switch This headphone amp enhances the signal from the input to the amplifier circuit, enabling optimal performance of the headphones. It not only outputs louder sound but also delivers clearer and more stereo sound without distortion.

6 Channel Headphone Amp This portable headphone amplifier has 6 channel splitter ports, each of which is capable of manually and independently controlling the volume, output mode, and switching between stereo and mono. It has multiple output ports, six 3.5MM headphone jacks and six 6.35MM headphone jacks to meet the monitoring needs of different headphone devices.

Pairs a dynamic driver (subwoofer) with dual balanced armatures (treble units) and double resonators for pronounced highs & bass with full sonority.

RECHARGEABLE BATTERY Headphone amplifier has 1500mAh rechargeable lithium battery, working more than 8 hours. There is a volume control knob for volume adjustment.

B25 Earphones feature 20hz to 20000 hz frequency response, Y Shape Cord, 3.5 mm gold plated headphone jack, balanced pure sound with strong bass, high trebles and crisper mids