4 way headphone amplifiers in comparison

Excellent Audio Quality 4 Channels headphone power amplifier is a 4 channel volume independent control gain effect up to 20db,USB interface.

Four stereo 1 4-inch & four 1 8-inch headphone outputs

liovitor

Bi-Directional Audio Switcher --- 4 In 1 Out or 1 In 4 Out Audio Switcher Enables Your Device to Connect to Four Peripheral Devices, Use the Knob Switch to Select an Audio Input or Output From 1 2 3 4. Enhance Your Sound Quality and Experience Smooth Audio Switch with Our RCA Switcher

It's a Lossless Bi-Directional Audio Switcher And Splitter, Adopting High-Quality Electronic Components, Noise Reduction Circuit Design, Clear Sound, Noise Free, Crosstalk Free For Switching And Transmitting Audio Signals.

Plug and play No power supply and other software required; 't affect sound quality.

2 or 4 channel stereo speaker control, allow conventional amplifier or stereo receiver to drive multiple sets of speakers, without the need for external impedance matching devices

Dawafit

ULTRA-LOW-NOISE LZSIG headphones amplifier system Equipped with 3 ROHM low-noise and high-quality operational amplifiers, it guarantees the highest sound quality, ultra-low noise, and distortion-free performance. It is ideal for distributing up to 4 audio signals, allowing multiple headphones to enjoy an ultra-low noise monitoring and music system. The 6-channel headphone amplifier is compatible with 1 4" or 1 8" TS and TRS plugs, making it perfect for both studio and stage applications

Dual DAC Dual Crystal Portable USB DAC Equipped with 2 of ES9219 DAC chips and Independent FPGA-based dual independent crystal oscillator reclocking, A solid foundation for good sound quality. Supporting up to PCM768kHz 32bit, DSD256 (native) decoding, edging on professional HiFi player in decoding specifications

3. Clear Sound, Ultra-Low Noise 4580 Operational Amplifier For 19inch Studio Equipment.

COMPACT DESIGN Fashionable appearance and portable size ensure you can carry it everywhere you go or pack it in bag. With its lightweight and convenient design, makes an ideal traveling companion and even an educational resource for classroom.