11 Best USB DACs (June 2026) Tested & Reviewed

I spent three months testing 23 different USB DACs across every price point, from $9 budget adapters to $165 flagship dongles. My desk became a mess of cables, IEMs, and reference tracks played on repeat. The difference a good digital-to-analog converter makes is immediate and striking. Your laptop’s built-in audio is likely the weakest link in your headphone chain, and upgrading it transforms everything from gaming immersion to late-night music sessions.

After comparing signal-to-noise ratios, power output, build quality, and real-world listening sessions with everything from $20 earbuds to $400 planar magnetic headphones, I’ve narrowed down the 11 best USB DACs worth your money in 2026. Whether you need a pocket-sized dongle for your commute or a desktop powerhouse for your gaming rig, this guide covers every use case and budget.

This roundup focuses specifically on USB DACs that improve sound quality through superior digital-to-analog conversion, clean amplification, and proper power delivery. I tested each unit with Sennheiser HD650s (300 ohm), Moondrop Starfield IEMs (32 ohm), and Sony MDR-7506 studio monitors (63 ohm) to ensure recommendations work across different headphone types.

Top 3 Picks – Best USB DACs

Here are my three standout recommendations if you want the short version. The editor’s choice delivers flagship performance that rivals desktop stacks. The best value packs desktop-level power into a pocketable form factor. The budget pick proves you don’t need to spend much to get balanced output and hi-res audio support.

Quick Overview: Best USB DACs in 2026

This comparison table shows all 11 USB DACs I tested, organized by price tier from budget to premium. Each entry includes key specifications to help you quickly narrow down options based on your headphone type and use case. The table covers everything from basic USB sound adapters to flagship portable DACs that rival desktop setups.

1. FiiO KA17 – Dual ES9069Q Flagship Performance

The FiiO KA17 sits on my desk as I write this, connected to a MacBook Pro and driving a pair of Sennheiser HD650s that normally require a dedicated desktop amplifier. This little dongle should not be capable of what it does. It outputs 650mW per channel in desktop mode, enough to make those 300-ohm Sennheisers sing with authority and control I’ve only experienced from larger, more expensive gear.

During my two-week testing period, I used the KA17 as my daily driver across multiple scenarios. Morning coffee shop sessions with IEMs, afternoon video calls, evening gaming sessions, and late-night critical listening with full-size headphones. The dual ES9069Q DAC chips extract detail I didn’t know existed in tracks I’ve heard hundreds of times. The THX AAA 78+ amplification architecture keeps everything clean even at high volumes.

The OLED display is genuinely useful, showing current sample rates and volume levels at a glance. The parametric EQ lets me apply subtle corrections for different headphones or simulate famous frequency curves like the Harman target. I found the desktop mode particularly impressive when connecting the second USB-C port to a power bank, unleashing the full 650mW balanced output that drives even demanding planars with ease.

Heat generation is the only real drawback. After 45 minutes of DSD512 playback in desktop mode, the aluminum chassis becomes noticeably warm. Not hot enough to cause concern, but definitely warmer than any other dongle I tested. The premium price might also give budget-conscious buyers pause, though considering it replaces a separate DAC and amplifier stack costing twice as much, the value proposition remains strong.

Best For

Audiophiles who want desktop-tier performance without the desk clutter. The KA17 excels with high-impedance headphones like the HD650, HD800, or Beyerdynamic DT1990 Pro. Critical listeners who demand full MQA decoding for Tidal Masters will appreciate the complete unfolding capability. Anyone building a minimalist setup that doesn’t compromise on sound quality will find their endgame DAC here.

Not Ideal For

Budget shoppers should look at the KA13 or KA11 instead. Users who primarily drive easy-to-power IEMs might find the KA17’s capabilities overkill. If you need EQ adjustments primarily on iOS devices, the browser-based programming requirement might frustrate you. Those extremely sensitive to device warmth should consider the iFi Go Link Max as an alternative.

2. FiiO KA13 – Desktop Power in Your Pocket

When FiiO announced the KA13 with 550mW output power, I assumed marketing exaggeration. Then I plugged in my 250-ohm Beyerdynamic DT1770 Pros and watched the volume headroom meter in my music player. The KA13 delivers power that competes with dedicated desktop amplifiers costing significantly more. This became my most-used DAC during the testing period precisely because it refuses to compromise.

The desktop mode feature deserves special mention. By holding both volume buttons, you unlock the full 550mW balanced output even when connected to a phone. I used this feature extensively with my ROG Ally gaming handheld, velcroing the KA13 to the back for a high-end portable audio setup. Games like Cyberpunk 2077 and Elden Ring gained new sonic dimensions with proper amplification driving my headphones.

Sound quality is transparent and clean. The dual CS43131 chips combined with SGM8262 op-amps produce a 111dB SINAD that reveals every detail without adding coloration. I appreciate this neutrality for reviewing headphones, though some listeners prefer the warmer signatures of competitors. The FiiO Control app lets you adjust RGB lighting, select digital filters, and even enable SPDIF output if needed.

The compact size works against it slightly. I’ve misplaced this dongle twice, finding it in jacket pockets days later. Heat generation is noticeable during desktop mode operation, though never concerning. The lack of included USB-A adapter means PC users with older ports need a separate cable or adapter.

Best For

Power users with demanding headphones that need significant drive. Gamers wanting immersive audio without desktop clutter. Anyone wanting desktop-tier specs in a truly portable form factor. The KA13 serves as an excellent all-rounder that won’t limit your headphone choices based on impedance or sensitivity.

Not Ideal For

Pure IEM users might find the power overkill and the unit slightly bulky compared to smaller dongles. Those wanting a warmer, more colored sound signature should look at the KA11 or MOONDROP alternatives. Users who frequently switch between USB-C and USB-A devices should invest in a quality adapter separately.

3. iFi Audio Go Link Max – Balanced Excellence

iFi Audio built their reputation on delivering audiophile-grade sound in accessible packages, and the Go Link Max continues that tradition. The moment I switched from my phone’s included dongle to this unit, the difference was immediate and substantial. Instruments gained separation, bass tightened up, and the overall presentation became more three-dimensional and engaging.

The dual ESS Sabre DAC chips running in a balanced configuration deliver technical performance that exceeds the price point. iFi’s Dynamic Range Enhancement technology actually works, bringing out subtle details in quiet passages that normally get lost. The THD compensation circuit further cleans up any remaining distortion, resulting in a presentation that sounds remarkably clean and refined.

Build quality impresses with silver-plated copper conductors and gold-plated connectors. The flexible cable with proper strain relief feels like it will survive years of pocket carry. I particularly appreciate the included USB-A adapter, which saves frustration when connecting to older laptops or desktop PCs. The 241mW balanced output opens up soundstage significantly when used with 4.4mm cables.

The lack of app control might disappoint users wanting EQ adjustments, though the pure signal path appeals to purists. Battery drain increases noticeably when using the balanced output, something to consider for long travel days. Heat generation during extended listening sessions is present but manageable.

Best For

Listeners wanting a clear upgrade over stock phone adapters without complexity. iPhone and iPad users benefit from seamless iOS compatibility. Those with 4.4mm balanced cables wanting to experience the soundstage benefits of balanced output. Anyone prioritizing build quality and premium materials in their portable gear.

Not Ideal For

Users wanting software EQ or filter adjustments should look at FiiO alternatives. Those driving extremely power-hungry planars might want the more powerful KA13 or KA17. Budget-conscious buyers can find adequate performance for less money, though the build and sound quality justify the premium here.

4. Fosi Audio K5 Pro – Gaming Audio Powerhouse

My gaming setup transformed when I added the K5 Pro. Previously I used the Q4 for desktop audio, but the addition of a microphone input meant I could route both game audio and voice chat through proper amplification. The difference in competitive gaming is substantial. Footsteps become easier to locate, directional audio gains precision, and the overall immersion factor increases dramatically.

The 1000mW output power is not marketing fluff. I connected a pair of 300-ohm Sennheiser HD800S headphones typically reserved for dedicated amplifier stacks, and the K5 Pro drove them with surprising authority. The bass and treble knobs aren’t gimmicks either. I found myself adjusting bass levels between different game genres, adding warmth for RPGs and tightening response for competitive shooters.

Build quality matches the performance. The metal chassis feels substantial, and the combined volume/power knob operates smoothly. Multiple input options mean I can switch between PC USB, console optical, and TV coaxial without cable swapping. The RCA output lets me connect powered speakers when I want to switch from headphones.

Long-term reliability concerns emerged during research. Several users report units failing after 18-24 months, just outside the warranty period. The bright blue LED cannot be dimmed, which might annoy users in dark rooms. These concerns aside, the performance per dollar remains exceptional for gaming and general desktop use.

Best For

Gamers wanting superior headphone audio and microphone integration. Users with multiple audio sources needing easy switching. Anyone wanting physical EQ controls for on-the-fly adjustments. Those with demanding headphones needing serious amplification without breaking the bank.

Not Ideal For

Users prioritizing long-term reliability over raw performance might prefer FiiO alternatives. Those wanting software control or app integration should look elsewhere. Portable use is impractical given the desktop form factor. The bright LED might bother users in darkened rooms.

5. Fosi Audio DS2 – Dual DAC Versatility

The DS2 earned the nickname “Swiss Army Knife” during my testing because it handles nearly every scenario competently. Commute with IEMs? Check. Desktop gaming with full-size headphones? Check. iPad Pro music production? Check. The dual CS43131 implementation here rivals more expensive units, delivering clean, detailed sound with impressive technical specifications.

During my week-long exclusive test, the DS2 became my go-to for switching between devices. Morning iPhone calls, afternoon laptop work, evening PS5 gaming. The 60-step volume control with memory function meant I never blasted my ears when switching between sensitive IEMs and full-size headphones. The balanced 4.4mm output provided noticeable soundstage improvement with my balanced cable equipped IEMs.

Vocal presentation stands out as a particular strength. Listening to acoustic tracks and podcasts, voices emerge with presence and clarity that budget alternatives cannot match. Center imaging is precise, making this an excellent choice for monitoring and critical listening applications. The ultra-low 1uV noise floor means complete silence during quiet passages.

The included cable failed within two days of testing, a concerning quality control issue. I replaced it with a higher-quality third-party cable and the unit performed flawlessly thereafter. The HiBy Music app integration feels unfinished and I avoided it after initial testing. These accessory and software issues detract from an otherwise excellent hardware package.

Best For

Users wanting a single DAC for multiple devices and use cases. IEM enthusiasts with balanced cables wanting to experience the format’s benefits. Vocal-centric music listeners prioritizing clarity and presence. Those wanting high-end technical specifications without flagship pricing.

Not Ideal For

Buyers who expect premium accessories in the box should budget for a replacement cable. Users wanting polished app integration should consider FiiO alternatives. Those seeking absolute flagship detail retrieval might prefer the KA17 or dedicated desktop units. Anyone wanting a longer included cable for desktop setups.

6. MOONDROP Dawn PRO 2 – Customizable Sound

MOONDROP disrupted my expectations of what a mid-range dongle could offer. The web-based parametric EQ system represents genuine innovation in this category. Instead of settling for fixed filters or basic bass boosts, you get 10 bands of adjustable PEQ accessible through any browser. I spent an evening tuning the Dawn PRO 2 to match my preferences for different headphone models, saving presets for quick recall.

The dual CS43198 chips provide technical performance that reveals the full capability of high-resolution tracks. During testing with DSD256 files, the Dawn PRO 2 decoded flawlessly while maintaining the delicacy these formats demand. The independent crystal oscillator and three separate LDO power chips reduce interference that can muddy the sound in lesser designs.

Build quality exceeds expectations with aviation-grade aluminum and CNC machining. The heat dissipation vents actually work, keeping the unit cooler than competitors during extended sessions. The 100-level volume control provides finer adjustment than typical 30 or 60 step implementations, letting me find the perfect level for sensitive IEMs.

The PEQ persistence issue frustrates. When reconnecting the device, you must reload your EQ preset by pressing both volume buttons simultaneously. The 4.4mm balanced port occasionally needed reseating to establish proper connection. Some early units suffered from button functionality issues, though my sample performed perfectly.

Best For

Tinkerers who enjoy customizing their sound signature. IEM enthusiasts wanting parametric EQ for correcting specific models. Users valuing build quality and heat management. Those wanting flagship DAC chips without paying flagship prices.

Not Ideal For

Those wanting set-and-forget simplicity might find the EQ system overkill. Users prioritizing absolute maximum power output should consider the KA13 or KA17. Anyone wanting persistent EQ settings without manual reloading. Those concerned about potential quality control issues should verify return policies.

7. Fosi Audio Q4 – Desktop Essential

The Q4 represents the entry point into serious desktop audio improvement. When I first plugged it in between my PC and powered speakers, the immediate reduction in digital harshness justified the modest investment. The optical input became particularly useful for connecting my TV, bypassing the terrible audio processing built into modern flat panels.

During three weeks of daily use, the physical bass and treble knobs proved surprisingly valuable. Different content demanded different settings. Movies benefited from slight bass boost. Acoustic music sounded better with flat response. Video calls needed treble reduction to tame harsh voices. This hands-on control appeals more than software EQ buried in menus.

Build quality impresses with genuine metal construction that feels substantial. The compact footprint fits anywhere, even cluttered desks. Multiple inputs mean I can switch between PC USB, TV optical, and even a CD player via coaxial without cable swapping. The RCA output connects to powered speakers or external amplifiers when headphones aren’t appropriate.

The noise floor becomes audible with sensitive, low-impedance headphones under 32 ohms. My 16-ohm IEMs revealed a slight hiss during quiet passages that disappeared with higher-impedance headphones. The included cables measure barely over a foot, requiring creative desk placement or replacement cables for comfortable setups.

Best For

Desktop users wanting multiple input options without complexity. TV owners seeking better optical audio output. Those wanting physical tone controls for quick adjustments. Budget-conscious buyers refusing to compromise on build quality. Users with headphones between 32-200 ohms impedance.

Not Ideal For

Owners of sensitive low-impedance IEMs should consider the KA11 or similar instead. Gamers needing microphone integration should upgrade to the K5 Pro. Those wanting the absolute best sound quality without budget constraints have better options above $100. Users needing long cables should factor replacement costs into their budget.

8. FiiO KA11 – Entry-Level Excellence

The KA11 intrigued me because FiiO packed the same CS43131 chip found in $100+ competitors into a sub-$35 package. During my testing, the technical measurements confirmed this wasn’t compromised hardware. THD+N under 0.0006% and 125dB SNR match specifications from dongles costing twice as much. The warm, full sound signature differs from the analytical presentation of some competitors, appealing to listeners wanting musical enjoyment over critical analysis.

Gaming console compatibility emerged as a pleasant surprise. The UAC1.0 support means plug-and-play operation with Nintendo Switch and PlayStation 5, no configuration needed. I spent several evenings using the KA11 with my Switch OLED and a pair of Audio-Technica headphones, enjoying significantly improved audio over the console’s built-in output. The LED indicators change color based on sample rate, providing useful visual feedback.

Build quality looks impressive with metal housing and braided cable, though long-term reliability reports concern me. Several users report units failing after 2-3 months, and my sample developed intermittent connection issues during the final week of testing. The non-detachable cable means any failure requires complete replacement. Heat generation during use is noticeable though not extreme.

The warm sound signature divided my listening panel. Half preferred the musical presentation, while others wanted more neutrality for accurate monitoring. This subjectivity makes the KA11 worth auditioning if possible. For the price, the technical performance exceeds expectations even if the reliability creates hesitation.

Best For

Budget buyers wanting premium DAC chip specifications. Nintendo Switch and PS5 users needing plug-and-play audio improvement. Listeners preferring warm, musical sound signatures. Those wanting LED visual feedback for sample rates. Users with easy-to-drive headphones wanting more fullness and body.

Not Ideal For

Risk-averse buyers concerned about reliability reports should consider the UGREEN or Allegro Mini instead. Those wanting neutral, analytical presentation might prefer alternatives. Users needing detachable cables for flexibility. Critical listeners requiring absolute consistency over long periods.

9. Linsoul Kiwi Ears Allegro Mini – Balanced on a Budget

Finding balanced 4.4mm output under $30 seemed impossible until the Allegro Mini arrived. This compact dongle proves that affordable USB DACs need not compromise on features or build quality. The all-aluminum body feels substantial in hand, and the direct plug-in design eliminates the cable failure point that plagues many competitors.

During my testing with various IEMs, the Allegro Mini demonstrated that budget DACs can deliver transparent, clean sound. The 32bit/384kHz PCM support handles any streaming service’s highest quality tiers. DSD128 compatibility, while niche, provides future-proofing for those exploring high-resolution formats. The 0.004% THD+N specification matches more expensive alternatives.

The form factor creates interesting ergonomic tradeoffs. Direct connection to phones eliminates cable clutter and failure points, but the blocky shape interferes with comfortable phone holding for some users. My standard phone case worked fine, though bulkier protective cases required removal. The 4.4mm balanced output dramatically improved soundstage with compatible IEMs and cables.

Some quality control inconsistency emerged in my research, with occasional reports of DOA units. My sample performed perfectly throughout testing. The lack of app support means no EQ adjustments, though the neutral sound signature rarely needed correction. Android-only compatibility excludes iPhone users who should look at the iFi Go Link or standard Lightning dongles.

Best For

Budget-conscious IEM users wanting balanced output access. Android phone owners seeking case-friendly portable audio. Those wanting premium metal construction at entry-level prices. Users prioritizing cable elimination and direct connection simplicity. Anyone curious about 4.4mm balanced audio without major investment.

Not Ideal For

iPhone users are excluded from compatibility. Those with bulky protective phone cases should verify fit. Users wanting EQ adjustments or app features should spend more on FiiO or MOONDROP alternatives. Those prioritizing ergonomic phone holding during listening might prefer cabled dongles.

10. UGREEN USB to 3.5mm Adapter – Hi-Res Starter

The UGREEN adapter occupies the sweet spot between ultra-budget adapters and premium dongles. The jump from 16bit/48kHz to 24bit/96kHz matters more than specifications suggest. During blind testing, I consistently identified the UGREEN over basic adapters due to improved detail retrieval and reduced digital harshness, particularly in high-frequency content like cymbals and vocal sibilance.

Durability stands out as a key advantage. The nylon braided cable survived my stress testing that killed lesser adapters. The aluminum alloy shell provides protection that plastic alternatives cannot match. After two months of pocket carry and occasional yanks, the UGREEN shows no wear while cheaper options developed connection issues.

Platform compatibility impressed me during multi-device testing. Windows laptops, MacBooks, Ubuntu workstation, PS5, and Nintendo Switch all recognized the UGREEN immediately. The TRRS support means microphone compatibility for calls and voice chat, though the mic channel lacks the 24bit resolution of the headphone output.

The limitation to easier-to-drive headphones becomes apparent with demanding loads. My 250-ohm Beyerdynamics revealed the UGREEN’s power ceiling, with dynamics compressing at higher volumes. Users with standard 16-32 ohm headphones will find the performance adequate, but high-impedance or planar magnetic headphones need more powerful alternatives.

Best For

Users wanting a noticeable upgrade from basic adapters without premium pricing. Those prioritizing durability and build quality. Multi-platform users needing consistent performance across devices. Anyone wanting microphone support with their headphone upgrade. Listeners with standard impedance headphones seeking cleaner sound.

Not Ideal For

High-impedance headphone owners should consider the KA11 or Allegro Mini instead. Those wanting balanced output or maximum power delivery have better options above $30. iPhone users wanting inline remote control should verify compatibility. Critical listeners seeking absolute transparency might prefer the cleaner measurements of CS43131-based alternatives.

11. SABRENT USB Sound Adapter – Plug-and-Play Simplicity

The SABRENT adapter represents the absolute entry point into USB audio improvement, and surprisingly, it delivers meaningful benefits for the price of a coffee. When my partner’s laptop developed onboard audio crackling, this $9 adapter restored full functionality within seconds of plugging in. The 98dB SNR provides clean sound that exposes the limitations of cheap laptop audio circuits.

During testing, the universal compatibility proved genuinely impressive. Windows 11, macOS Ventura, Ubuntu 22.04, PlayStation 4, and even an older Chromebook all recognized the SABRENT immediately without driver installation. The 3D sound processing creates a wider presentation than basic stereo, though audiophiles might find the processing artificial.

The compact size makes this an ideal travel companion. I keep one in my laptop bag for hotel room troubleshooting when laptop audio fails or hotel TVs need headphone connection. Some users report success with airplane IFE systems using special apps, though I haven’t tested this personally. The volume improvement over failing onboard audio is immediately noticeable.

Limitations are clear and expected at this price. The 48kHz sample rate ceiling excludes hi-res audio formats. Mono microphone input restricts recording quality for content creators. The wide USB body can block adjacent ports on tightly spaced laptops. High-impedance headphones receive inadequate power, producing thin, quiet sound.

Best For

Users with broken onboard audio needing immediate affordable replacement. Travelers wanting a compact audio backup. Those testing whether USB audio improvement matters for their use case. Basic computer users wanting simple plug-and-play operation. Anyone needing immediate audio restoration without technical complexity.

Not Ideal For

Hi-res audio listeners should upgrade to the UGREEN or higher. Content creators needing stereo microphone recording require different solutions. High-impedance headphone owners will find inadequate power delivery. Users wanting premium build quality for daily carry should invest more. Anyone seeking audiophile-grade sound should look at CS43131-based alternatives.

What to Look for in a USB DAC

Choosing the right USB DAC requires understanding your specific needs rather than simply buying the most expensive option. After testing dozens of units across price points, I’ve identified the key factors that actually matter for real-world satisfaction.

Understanding DAC Chip Specifications

The DAC chip determines how accurately your digital files convert to analog sound. Modern flagship chips like the ES9069Q in the FiiO KA17 or dual CS43131 implementations in mid-range options deliver exceptional performance that exceeds human hearing limits in most measurements. However, implementation matters more than chip specs alone. A well-designed circuit with a decent chip often outperforms a poorly executed flagship design.

For most listeners, any modern DAC chip from reputable manufacturers like ESS, Cirrus Logic, or AKM provides adequate performance. The differences between flagship and mid-range chips become audible only with excellent headphones in quiet environments. Budget chips found in sub-$20 adapters compromise on sample rate support and noise floor, creating audible limitations that justify spending more for serious listening.

Power Output and Headphone Matching

Power output measured in milliwatts (mW) determines which headphones your DAC can drive properly. Low-impedance headphones (16-32 ohms) common in portable use require minimal power, while high-impedance models (250-600 ohms) demand significant amplification to reach satisfying volumes with proper dynamics.

During my testing, I found that 100mW per channel adequately drives most consumer headphones. Planar magnetic headphones and high-impedance dynamic models benefit from 300mW or more. The FiiO KA13’s 550mW and KA17’s 650mW desktop mode represent overkill for casual use but provide headroom that improves dynamics even with easier loads. Always check your headphone’s impedance and sensitivity ratings before purchasing.

Form Factor: Portable vs Desktop

Your usage patterns determine whether a pocketable dongle or desktop unit makes sense. Dongle DACs like the KA series or iFi Go Link excel for mobile use, connecting directly to phones or laptops without clutter. Desktop units like the Fosi Q4 and K5 Pro offer more inputs, physical controls, and typically more power for demanding setups.

Consider your primary listening environment. Commuters and travelers benefit most from compact, durable dongles. Home office workers and gamers might prefer desktop units with multiple inputs and tone controls. Some users, myself included, maintain both types for different scenarios. The premium dongles like the KA17 blur these lines, offering desktop-tier performance in portable sizes.

Connectivity and Compatibility

USB-C dominates modern DAC design, but compatibility varies. iPhone users need Lightning-compatible options or dongle adapters. PC users with USB-A ports should verify included adapters or purchase separately. Gaming console users should confirm UAC1.0 support for plug-and-play operation with PlayStation and Nintendo Switch systems.

Output options matter based on your headphones. Standard 3.5mm single-ended outputs work universally. Balanced 4.4mm or 2.5mm connections provide superior soundstage and power delivery with compatible cables. Desktop units often include RCA outputs for connecting powered speakers or external amplifiers, adding versatility for home setups.

Frequently Asked Questions

Conclusion

After three months of intensive testing, the best USB DACs in 2026 prove that significant audio improvements exist at every price point. The FiiO KA17 earns editor’s choice for delivering flagship performance that rivals desktop stacks costing three times more. For most users, the FiiO KA13 represents the sweet spot of price and performance, packing desktop-level power into a pocketable form factor.

Your specific needs ultimately determine the right choice. Budget-conscious buyers find capable performance in the Linsoul Allegro Mini and UGREEN adapter. Desktop users benefit from the versatile Fosi Q4 and gaming-focused K5 Pro. Premium seekers discover their endgame in the KA17’s remarkable engineering.

Every DAC in this guide underwent real-world testing with multiple headphone types across varied content. The recommendations reflect actual performance rather than marketing specifications. Whether you’re fixing broken laptop audio or building a reference listening setup, these 11 USB DACs represent the best options available today.