PickedTech
Buying guide

Best DAC/amps for open-back headphones

A 300-ohm Sennheiser HD 600 or a planar like the HiFiMAN Sundara sounds better with a proper amp. $130–$300 buys plenty of clean power; you don’t need more for most open-backs.

By PickedTech Editorial TeamLast updated Prices & specs checked Oct 2026

Disclosure: PickedTech is reader-supported. Some links on this page are affiliate links, and we may earn a commission if you buy through them, at no extra cost to you. This never affects which products we recommend or how we rank them. How we make money.

How this page was made: this is a research-based guide built from manufacturer spec pages, official prices and published lab measurements from the outlets we name and link. We haven’t tested these products ourselves, and we don’t invent scores. Our methodology.

Quick answer

A 300-ohm Sennheiser HD 600 or a planar like the HiFiMAN Sundara sounds better with a proper amp. $130–$300 buys plenty of clean power; you don’t need more for most open-backs. Best all-in-one value: FiiO K11, $129.99. Best amp-only value: JDS Labs Atom Amp 2, $129. Best made-in-USA: Schiit Magni Unity, $119. Best compact balanced: iFi ZEN DAC 3, $229.

Last updated Prices checked Oct 2026

Key facts at a glance

Key facts (prices checked Oct 2026)
PickProductBest forPrice
Best all-in-one valueFiiO K11a first DAC/amp$129.99 list
Best amp-only valueJDS Labs Atom Amp 2pairing with a DAC you already own$129
Best made-in-USASchiit Magni Unitya US-built amp you can upgrade$119 (DAC card extra)
Best compact balancediFi ZEN DAC 3a compact balanced DAC/amp$229
Most powerTopping DX5 IImaximum power and headroom$299

Power figures are the makers’ own (Topping’s and the K11 R2R’s as reported by Headfonics[6][7]). Need headphones first? See best open-back headphones under $300.

Which should you buy? Our quick picks

Best all-in-one value
FiiO K11
DAC + amp, 1,400 mW at 32Ω balanced; $129.99 list.
Check price (opens in a new tab)
Best amp-only value
JDS Labs Atom Amp 2
$129; 2.65 W at 32Ω, 286 mW at 300Ω.
Check price (opens in a new tab)
Best made-in-USA
Schiit Magni Unity
$119 amp with optional internal DAC card.
Check price (opens in a new tab)
Best compact balanced
iFi ZEN DAC 3
$229; compact DAC/amp with a 4.4mm balanced output.
Check price (opens in a new tab)
Most power
Topping DX5 II
$299; 6,400 mW at 32Ω balanced.
Check price (opens in a new tab)

How do they compare?

Desktop DAC/amps compared (Oct 2026)
ModelPriceTypeMaker power specBest for
FiiO K11$129.99 list (seen at $142.99)DAC + amp1,400 mW at 32Ω (balanced)A first DAC/amp
FiiO K11 R2RAbout $160–$170DAC (R2R) + amp1,300 mW at 32Ω balanced; 460 mW single-endedTrying an R2R DAC on a budget
JDS Labs Atom Amp 2$129 (Atom DAC 2: $149)Amp only (add a DAC)2.65 W at 32Ω; 286 mW at 300ΩPairing with a DAC you already own
Schiit Magni Unity$119Amp + preamp; optional DAC cardNot compared here; see SchiitA US-built amp you can upgrade
iFi ZEN DAC 3$229DAC + amp300+ mW at 32Ω (balanced)A compact balanced DAC/amp
Topping DX5 II$299DAC + amp6,400 mW at 32Ω; 990 mW at 300ΩMaximum power and headroom

The picks in detail

Best all-in-one value

1. FiiO K11

Best for: a first DAC/amp

The FiiO K11 is a compact desktop DAC and amp with USB-C, optical and coaxial inputs, 4.4mm balanced and 6.35mm outputs, and FiiO’s rating of 1,400 mW at 32Ω on the balanced output. List price is $129.99; Amazon has been closer to $143. It’s enough for the HD 600 and Sundara.

Price (Oct 2026): $129.99 list Source

Pros

  • DAC and amp in one box
  • Optical and coaxial inputs
  • Balanced 4.4mm output

Cons

  • Less power than the DX5 II
  • Not an R2R design (see K11 R2R)
Check FiiO K11 price (opens in a new tab)
Best for trying an R2R DAC on a budget

2. FiiO K11 R2R

Best for: trying an R2R DAC on a budget

The K11 R2R swaps in a resistor-ladder (R2R) DAC. Headfonics[6][7] reviewed it at $169.99 and called it one of the best value options; FiiO rates it at about 1,300 mW at 32Ω balanced and 460 mW single-ended.

Price (Oct 2026): About $160–$170 Source

Pros

  • R2R DAC at a low price
  • Balanced output

Cons

  • Lower single-ended power
  • Costs more than the standard K11
Check FiiO K11 R2R price (opens in a new tab)
Best amp-only value

3. JDS Labs Atom Amp 2

Best for: pairing with a DAC you already own

JDS Labs specs the Atom Amp 2 at 2.65 W into 32Ω and 286 mW into 300Ω, enough for nearly any dynamic or planar open-back. It’s amp-only, so add the matching $149 Atom DAC 2 or another DAC. JDS sells it for $129.

Price (Oct 2026): $129 Source

Pros

  • Lots of clean power for the price
  • Front-mounted controls
  • Stacks with the Atom DAC 2

Cons

  • No DAC built in
  • Single-ended output only
Check JDS Labs Atom Amp 2 price (opens in a new tab)
Best made-in-USA

4. Schiit Magni Unity

Best for: a US-built amp you can upgrade

Schiit’s Magni Unity is a $119 fully discrete headphone amp and preamp, designed and built in the US, with an optional internal Mesh DAC card for USB-C.

Price (Oct 2026): $119 (DAC card extra) Source

Pros

  • Discrete design
  • Preamp outputs for speakers

Cons

  • DAC is an add-on card
  • Amp section only out of the box
Check Schiit Magni Unity price (opens in a new tab)
Best compact balanced

5. iFi ZEN DAC 3

Best for: a compact balanced DAC/amp

The iFi ZEN DAC 3 is $229 at iFi. It adds a 4.4mm balanced output to a compact DAC/amp from a well-known brand. Its power (about 300 mW+ at 32Ω balanced) is lower than the others here, so it suits the HD 600 better than hard-to-drive planars.

Price (Oct 2026): $229 Source

Pros

  • Balanced output
  • Compact
  • Well-known brand

Cons

  • Least power here
  • Pricier than the K11
Check iFi ZEN DAC 3 price (opens in a new tab)
Most power

6. Topping DX5 II

Best for: maximum power and headroom

Headfonics[6][7] lists the Topping DX5 II at $299, with up to 6,400 mW at 32Ω and 990 mW at 300Ω. It’s the pick if you plan to move up to power-hungry planars later.

Price (Oct 2026): $299 Source

Pros

  • Huge power headroom
  • Balanced outputs
  • Works as a preamp

Cons

  • Most expensive here
  • More than most open-backs need
Check Topping DX5 II price (opens in a new tab)

Also considered

JDS Labs Atom DAC 2 ($149): the matching DAC for the Atom Amp 2. If you mostly use a laptop with no headphone jack, also see USB-C hubs for MacBook.

Do you need a DAC/amp?

Low-impedance headphones like the Sennheiser HD 560S run fine from many laptops. The 300-ohm HD 600 and planars like the Sundara need more voltage or current to reach comfortable volume with headroom. A $120–$150 amp solves that.

Using a DAC/amp for gaming

A DAC/amp with open-backs is a popular PC gaming setup. Add a separate mic, or see best gaming headsets under $100 and best wireless gaming headsets for PS5.

Frequently asked questions

What’s the best budget DAC/amp for the HD 600?
The FiiO K11 ($129.99 list) or the JDS Labs Atom Amp 2 ($129) plus a DAC. Both have plenty of power for 300-ohm headphones.
Do planar headphones need a powerful amp?
Planars like the HiFiMAN Sundara have low impedance but need more current. Any amp here rated at 1 W or more into 32Ω has comfortable headroom.
DAC/amp combo or separates?
A combo like the K11 is simpler. Separates like the Atom stack let you upgrade one part later.

Sources

Pricing and plan details were checked on the official pages below as of Oct 2026. Vendors change prices, credits and plan names often, and some show regional pricing at checkout, so confirm on the vendor’s site before you buy.

  1. JDS Labs: Atom Amp 2 (jdslabs.com)
  2. JDS Labs: Atom DAC 2 (jdslabs.com)
  3. Schiit: Magni Unity (schiit.com)
  4. iFi: ZEN DAC 3 (ifi-audio.com)
  5. FiiO: K11 (fiio.com)
  6. Headfonics: FiiO K11 R2R review (headfonics.com)
  7. Headfonics: Topping DX5 II review (headfonics.com)
best of

Best Open-Back Headphones Under $300

Open-back headphones sound more spacious than closed ones, but they leak sound and block none. These four cover dynamic and planar designs from about $140 to $229, all for quiet rooms.

best of

Best Gaming Headsets Under $100

Wireless headsets with 80-hour batteries now cost under $100, and great wired ones cost $40–$60. Check platform support before you buy: not every model works with Xbox.

best of

The Best Noise Cancelling Headphones Under $200

You don’t need $450 flagships to get useful noise cancelling. These six cost under $200 at list price, and several are often discounted.

best of

The Best USB-C Hubs for MacBook in 2026

Everyday HDMI + SD + USB-A hubs under $60 for cafés; Thunderbolt docks when you need a full desk.