USB DAC/Amp from Monoprice
Tube and JFET dual-mode portable headphone amplifier
Wireless Bluetooth Receiver Headphones AMP Separate AK4377 DAC+AMP Chip and CSR8675 Bluetooth 5.0 receiver
AK4490 Premium 32-bit Stereo DAC with VELVET SOUND™ technology. Support of PCM up to 32bit/384kHz. Support of Native DSD up to 256x. Dedicated headphone amplifier with 3.5mm single-ended output portWorks as a USB-DAC for Android smartphones and tablets, Mac, Windows, and Linux computers. USB C connector for better compatibility with Android smartphones & tablets. Dual ultra-low noise LDOs to ensure a high performance audio. 4-wire braided audiophile cable.
HiFi Portable Headphone Amplifier for Mobile Phone and High Impedance IEMs
Honey, I Shrunk the Headphone Amp Pros: Size, great power output, long lasting, easy to use Cons: nothing included to help attach this to your source Disclaimer Thanks to Dan at Periodic Audio for arranging a sample of the Nickel for the purposes of this review. The thoughts here are my own subjective opinions based on time spent listening to the Nickel. They do not represent Periodic Audio or any other entity. I have no affiliation with Periodic Audio and am in no way connected with...
Single-ended, balanced portable amplifier with Bluetooth aptX and AAC
The Oriolus BA300s is a portable balanced 4.4mm micro tube amplifier.
Bluetooth Hi-Res Headphone Mini Amplifier
A streaming module to be used with the chord mojo
Portable headphone amplifier
Product Features * Bluetooth V5.0 specification * Japan Audio Society Hi-Res standard sound quality certified * Supports SBC, AAC, aptX, aptX HD, and LDAC codecs * Supports up to 384kHz/32Bit sample rate with advanced SRC/Sample Rate Converter * Frequency range up to 100kHz * 4 sound inputs, including SPDIF, USB, 3.5mm Line-in, and Bluetooth * 2 sound outputs, including SPDIF and 3.5mm Line-out * Able to connect with laptop/desktop/tablet PCs, mobile phones, or portable media players * With...
Portable wireless hi-fi headphone amplifier with integrated microphone 24 bit Bluetooth 5.0
The XRK NHB Class A portable amplifier is a 9V powered portable amplifier in a Cmoy like enclosure. It is powered by 2 9V batteries, and can either be purchased in kitset (DIY) form or as a finished product. Specifications: Ultra-low -126dB noise floor Output impedance ~ 3.9 ohm Tube-like harmonic distortion profile with only 0.05% THD (1kHz 700mV into 270 ohms) which is predominantly second harmonic (90%) Max Output Power @ 32 ohm = 34 mW RMS, 3.0Vpp at 0.46% THD Max Output Power @ 50 ohm...
The latest version of the Aune B1 series portable amplifer. It is the upgrade to B1 2017 version with high quality components inside , improved sound and golden 3.5mm output jack.
Portable headphone and earphone amplifier
Mini Earphones 192KHz / 24bit Amplifier
High-resolution Audio Amplifier The built-in DAC and amplifier bring the intensive audio processing required to render the lossless audio directly from your smartphone.
This Portable USB DSD DAC is capable for high end 2.8MHz / 5.6MHz 1-bit and PCM 384KHz 32-bit digital audio playback in high fidelity through the USB port steaming from computer. It has a built-in rechargeable battery with capacity of 2200mAH, for a play time about 4 hours if fully charged
Discrete battery-powered transportable headphone ampifier