Found this Topping DX3 pro + at a thrift store today for $10! This is by far my best find : r/headphones
Topping MX3 USB Bluetooth Audio Interface Receiver DAC Headphone Digital Amp | eBay
Soundwave Audio Visual Store - TOPPING Get yours now! PM us for inquiries. 🔎http://www.tpdz.net/ Topping designs and manufactures USB DACs, The brand is widely known for its battery-powered headphone amplifiers. Associated with
Archimago's Musings: MEASUREMENTS: Topping DX3 PRO V2 (LDAC version) - plus frequency/amplitude stepped sine measurements, a quick look at the 8kHz USB PHY packet noise, and AirPods Pro "Spatial Audio" coming...
Topping MX5 DAC Black multi function amplifier (for speakers, headphones) | Reverb
Topping D10s - Official AMP/DAC/DAP Model Discussion - The HEADPHONE Community