Schiit Stack 2 (non-Uber)

JDS Labs - Objective2+ODAC Combo RevB

Schiit Audio Jotunheim (w/AMP Module)

Bottlehead Crack 1.1 OTL Headphone Amp

JDS Labs - The Element

Sony PHA-1A Portable High-Resolution DAC and Headphone PHA1A B&H

Mytek Brooklyn DAC+

Amazon.com: Aune X1S 32Bit/384KHz DSD DAC Headphone Amplifier black: Home Audio

Audio-gd NFB-11.28

DX7s - TOPPING

Parasound Zdac v.2 DAC and Headphone Amp

FiiO E10K USB DAC and Headphone Amplifier (Black)

Aune T1 SE MK3 Headphone DAC/Amp | Price & Reviews | Massdrop

TOPPING D30 / A30 Stack

Fiio K5 PRO Desktop Headphone Amplifier & DAC: Amazon.co.uk: Electronics

Amazon.com: OPPO HA-2SE Portable Headphone Amplifier & DAC: Electronics

Mojo Portable DAC & Headphone Amplfier | Chord Electronics

RME ADI-2 DAC

Questyle - CMA600i

Hugo 2 DAC, Preamp & Headphone Amp | Chord Electronics

–Liberty DAC – Mytek Digital

Questyle Audio CMA400i

Musical Fidelity X Can V8

denafrips | ARES

Aune X7S Balanced Headphone Amp Reviews | Drop (formerly Massdrop)DropDropDrop

Violectric V590 Headphone Amp / DAC

Object moLiquid Spark Headphone Amplifier by Alex Cavallived

Okto Research