What a DAC Does and When You Actually Need One
A DAC (Digital-to-Analog Converter) converts the digital audio data from your computer, phone, or streaming device into an analog signal that your amplifier and headphones can use. Your laptop and phone already contain a DAC — the question is whether the built-in DAC is good enough for your headphones and amplifier.
You need an external DAC if:
- Your computer’s headphone jack produces audible hiss or noise with sensitive headphones
- You’re using a desktop amplifier and want the cleanest possible signal
- Your amplifier or DAC/amp combo requires an external digital source
- You have a balanced amplifier (like the Schiit Magnius) requiring XLR outputs
The good news: external DACs under $200 now measure as well as units that cost $1,000+ five years ago. The gains from spending more than $150 on a DAC are genuinely marginal for most headphone setups.
Best Overall: Topping E30 II — $79
The Topping E30 II is the community consensus pick for the best budget DAC. It uses the AKM AK4493SEQ chip, measures below the noise floor of most amplifiers, and supports USB, optical, and coaxial inputs. The display shows the current sample rate and input.
At $79, it delivers performance that rivals DACs at $200–$400. Pair it with the JDS Labs Atom Amp+ or Schiit Magni Heresy for a complete desktop stack under $180.
Best for: Anyone wanting a clean, measurements-verified DAC for desktop use. Connections: USB, optical, coaxial in; RCA out Balanced output? No
Best Budget: SMSL SU-1 — $79
The SMSL SU-1 competes directly with the Topping E30 II at the same price. It uses the CS43198 chip from Cirrus Logic, measures excellently, and crucially includes XLR balanced outputs — rare at this price. If you’re planning to eventually buy a balanced amplifier (like the Schiit Magnius), the SU-1 lets you have balanced outputs now without spending more.
Best for: Budget builders planning a future balanced setup. Connections: USB in; RCA + XLR out Balanced output? Yes — XLR
Best DAC/Amp Combo Under $200: Topping DX3 Pro+ — $149
If you want a single unit that handles both DAC and amplification, the Topping DX3 Pro+ is the best option under $200. It uses the ES9038Q2M DAC chip with Bluetooth 5.0 (including aptX HD and LDAC), a built-in headphone amplifier rated at 1W into 32Ω, and supports USB, optical, coaxial, and Bluetooth inputs.
The headphone amp section is adequate for most headphones — the HD 650 and DT 990 Pro both perform well, though the DX3 Pro+ lacks the power headroom of a dedicated desktop amp for difficult planars.
Best for: Space-constrained desks, casual listeners who want convenience over maximum performance. Connections: USB, optical, coaxial, Bluetooth in; RCA out, ¼" headphone out Balanced output? No
Best for Balanced Output: Schiit Modius — $199
The Schiit Modius is the natural partner for the Schiit Magnius balanced amplifier. It uses a balanced dual-differential AK4493 implementation with both XLR and RCA outputs. Measurements are excellent — it outperforms the Topping E30 II in channel crosstalk and dynamic range on the balanced output.
At $199, it sits at the top of this price range. The premium over the SU-1’s XLR output is justified if you’re building a complete Schiit balanced stack (Modius + Magnius = $398 total) — the matching footprint and aesthetic is a practical bonus.
Best for: Balanced amplifier pairings, Schiit ecosystem builders. Connections: USB, optical in; XLR + RCA out Balanced output? Yes — XLR
Best Portable: iFi Zen DAC 3 — $189
The iFi Zen DAC 3 is unique in this price range: it includes a headphone amplifier section, a 4.4mm balanced headphone output, and iFi’s PowerMatch gain system. It is powered by USB from your computer, eliminating the need for a power adapter.
The Zen DAC 3 is particularly notable for its 4.4mm balanced output — you can plug a headphone with a balanced cable (like the HD 660S2 or DT 1990 Pro with aftermarket cables) directly into it. For a single-box desktop solution with balanced headphone output under $200, nothing else comes close.
Best for: Headphone owners with 4.4mm balanced cables, single-box desktop setups. Connections: USB in; 4.4mm balanced + 6.35mm SE headphone out, RCA out Balanced output? Yes — 4.4mm headphone
Comparison Table
| DAC | Price | Chip | USB | Optical | Coaxial | Balanced out | Best for |
|---|---|---|---|---|---|---|---|
| Topping E30 II | $79 | AK4493SEQ | ✅ | ✅ | ✅ | ❌ | Best value overall |
| SMSL SU-1 | $79 | CS43198 | ✅ | ❌ | ❌ | ✅ XLR | Budget balanced |
| Topping DX3 Pro+ | $149 | ES9038Q2M | ✅ | ✅ | ✅ | ❌ | All-in-one convenience |
| Schiit Modius | $199 | AK4493 | ✅ | ✅ | ❌ | ✅ XLR | Schiit stacks |
| iFi Zen DAC 3 | $189 | BB DAC chip | ✅ | ❌ | ❌ | ✅ 4.4mm | Balanced headphone output |
Does the DAC Chip Matter?
Short answer: no, not meaningfully. AKM, ESS Sabre, and Cirrus Logic chips all measure well enough at this price range that the implementation (power supply quality, output stage design, ground isolation) matters more than the chip family. The Topping E30 II using an AKM chip and the SMSL SU-1 using a Cirrus Logic chip both measure below audibility thresholds.
Ignore marketing claims about specific chip brands being “warmer” or “more musical” — these are not measurable differences at this price tier.
Buying Tips
Match the output to your amplifier’s input: A balanced amplifier needs a DAC with XLR or 4.4mm balanced outputs. A standard single-ended amp needs RCA outputs. Check this before buying.
USB is the most practical input: USB audio from a computer is simpler and more universal than optical or coaxial. Only use optical or coaxial if you have a specific device (TV, CD player) that requires it.
You do not need to spend more than $150: Every DAC on this list delivers transparent, noise-free performance. Spending $500+ on a DAC is a diminishing-returns upgrade that would be better spent on better headphones or amplification.