Headphone Amplifier HIGI Impedance Headphone Amp Support 3.5mm AUX Input which can be Used with Either MAC, Mobile Phone, PS4, PS5, Laptop or Desktop System (4.4mm Headphone Amplifier): Amazon.co.uk: Electronics & Photo
TNP Portable Headphones Amplifier Stereo Headphone Earphone Amp Volume Control Audio Booster with RCA Input 3.5mm 6.3mm Output Jack & Power Switch: Amazon.co.uk: Electronics & Photo
Vox amPlug 2 - Clean Headphone Amp
Fender Mustang Micro Headphone Amp – Thomann UK
CANFORD BATTERY HEADPHONE AMPLIFIER Mk.2 PC KIT Amp, Y-lead, AC adapter international
PROZOR Headphones Amplifier 3.5mm Headphone Amplifier Hi-Fi Earphone Amplifier Rechargeable Headphones Portable Amplifier Headset Amp for MP3 Players iPods Personal Media Players etc: Amazon.co.uk: Electronics & Photo
Violectric HPA V200 AE Headphone Amp (Black) | MUSIC STORE professional
Portable Headphone Amplifier, Rechargeble Audio Digital HiFi Headphone Amp with Bass Boost and Adjust Volume, 16-600Ω Headphone Amplifier with 3.5mm AUX Output Interface for Phones, Computers: Amazon.co.uk: Electronics & Photo
Neoteck Portable 3.5mm HiFi Headphone Amplifier
Lehmann Linear Headphone Amplifier - Trade In Available
High Quality USB DAC Desktop Headphone Amp | TA-ZH1ES | Sony United Kingdom