Updated October 2026 · prices checked Oct 10, 2026.
Short answer: the Topping DX5 II ($299) is the best DAC/amp combo under $300 in October 2026. It replaces the Topping DX3 Pro+, which retailers now list as discontinued. If your headphones are 300Ω Sennheisers or anything easier, the FiiO K11 R2R ($170) does the same job for $130 less.
Balanced 4.4mm + XLR rated 6.4 W into 32Ω, 6.35mm SE at 2.2 W, Bluetooth LDAC and a remote (Topping spec). The one box that won't hold back a Sundara.
R2R DAC and 4.4mm balanced amp, about 8 V into 300Ω. Everything most HD 600, DT 990 and HE400SE owners need.
USB-powered with a 4.4mm balanced output and PowerMatch gain. The compact pick for easier headphones and small desks.
Comparison
Yardsticks: HD 600 needs 2.45 V for 110 dB peaks; HE400SE 80 mW; Sundara 40 mW.
| Model | Price | Into 32Ω | Into 300Ω | Balanced out | Bluetooth | Inputs |
|---|---|---|---|---|---|---|
| Topping DX5 II | ~$299 | 6.4 W bal. / 2.2 W SE | 990 mW bal. / 250 mW SE | 4.4mm + XLR | LDAC | USB, optical, coax, BT |
| FiiO K11 R2R | ~$170 | ~1.3 W bal. / ~0.5 W SE | ~220 mW bal. / ~50 mW SE | 4.4mm | No | USB-C, optical, coax |
| iFi Zen DAC 3 | ~$229 | >300 mW bal. / >210 mW SE | >70 mW bal. @600Ω | 4.4mm | No | USB-C |
| FiiO K7 | ~$220 | 2 W bal. | ~220 mW SE | 4.4mm | No | USB, optical, coax, RCA |
| Schiit Magni (Unity) + DAC | $199 | 2.5 W | 415 mW | No | No | USB (DAC card) |
| FiiO K13 R2R (stretch) | ~$319 | 2.4 W bal. / 1.22 W SE | 600 mW bal. / 150 mW SE | 4.4mm | n/p | see listing |
Manufacturer specs; n/p = not confirmed. Schiit price from schiit.com, Oct 10, 2026.
The picks
Topping DX5 II: best overall
Topping launched the DX5 II in mid-2025 at $299, and it’s now the default answer to “one box for any headphone under $300”. The balanced output has more power than any budget planar can use, the single-ended jack alone gives an HD 600 about 11 dB of headroom, and Bluetooth LDAC makes it useful for phone listening at the desk. Topping quotes a signal-to-noise ratio of about 133 dB.
Skip it if you’ll never own a planar and don’t need Bluetooth. The K11 R2R is $130 cheaper.
FiiO K11 R2R: best value
FiiO’s entry desktop unit with an R2R DAC. Use the 4.4mm output for 300Ω headphones (about 8 V); the single-ended jack is rated only about 50 mW into 300Ω, still enough for an HD 600 with ~4 dB to spare. Full detail in the under-$200 combo guide .
iFi Zen DAC 3: compact and USB-powered
Launched in 2024 at $229. It runs from USB power alone, has 4.4mm balanced and 6.35mm outputs, and a PowerMatch switch for more gain. iFi rates the balanced output above 70 mW into 600Ω, about 6.5 V, so HD 600 owners should use the balanced jack. USB-C is its only input. Our full Zen DAC 3 review covers the rest.
FiiO K7
No longer on FiiO’s website but still sold new at about $220. It’s a solid unit with 2 W balanced into 32Ω, but at that price the K11 R2R matches it for most headphones and the DX5 II beats it outright for $80 more. Buy it on a discount. See today's price for the FiiO K7 on Amazon ↗
Stretch: FiiO K13 R2R (~$319)
FiiO’s bigger R2R desktop unit (September 2025). Pick it over the DX5 II only if you want an R2R DAC; the Topping has more power and Bluetooth for $20 less.
What happened to the old picks
- Topping DX3 Pro+: retailers list it as discontinued. The DX5 II is Topping’s current one-box pick. Old review: DX3 Pro+ .
- iFi Zen DAC V2: replaced by the Zen DAC 3.
- FiiO E10K and Topping DX5 Lite: I couldn’t confirm current US availability, so they’re off the list.
Who should not spend $300 on a combo
- HD 560S, ATH-M50x and IEM owners. These need about 1 V or less, so a phone or a $9 dongle reaches loud levels. Check the voltage table .
- Anyone who already owns a good DAC. Buy an amp-only unit instead: best headphone amps under $300 .
Pairing guides: HD 600 · HD 650 · Sundara · HE400SE · DT 1990 Pro