Updated October 2026 · prices checked Oct 10, 2026. Sennheiser raised its US list prices in 2025–26; the sale prices below are what Sennheiser US was charging on Oct 10.
Our Top Picks
Best overall: the neutral reference since 1997, now about $350 on sale. Needs a desktop amp.
The warmer, smoother HD 600. The jazz and vocals favourite, and a classic tube-amp match.
The modern HD 650: same warmth, more sub-bass extension, still under $500 on sale.
Best closed-back under $500: Sennheiser's home-listening closed-back rather than a studio monitor.
The planar step up from the Sundara: big stage, planar bass. Check the current price.
How these were chosen: amperheads does not own or test headphones. Picks follow manufacturer specs, power math, published measurements and dated owner consensus from r/headphones and Head-Fi. Sound descriptions summarise that consensus.
Comparison Table
| Headphone | Price (Oct 2026) | Type | Impedance | Character (consensus) | Best for |
|---|---|---|---|---|---|
| Sennheiser HD 600 | ~$350 sale ($499.95 list) | Open-back | 300 Ω | Neutral, mid-centric | Reference, classical, vocals |
| Sennheiser HD 650 | ~$380 sale ($579.95 list) | Open-back | 300 Ω | Warm, smooth | Jazz, long sessions, tube amps |
| Sennheiser HD 660S2 | ~$480 sale ($679.95 list) | Open-back | 300 Ω | Warm, more sub-bass | Modern genres in HD 650 style |
| Sennheiser HD 505 | $329.95 | Open-back | 120 Ω | Lean, bright-ish | HD 600 taste, lower budget |
| Sennheiser HD 620S | ~$400 | Closed-back | — | Open-sounding closed-back | Shared rooms |
| HiFiMAN Sundara | varies, well under $300 | Open planar | 37 Ω | Neutral, detailed | Best-value planar |
| HiFiMAN Edition XS | check price | Open planar | — | Wide, airy | Stage, planar bass |
Best Overall: Sennheiser HD 600
See today's price for the Sennheiser HD 600 on Amazon ↗The HD 600 has been in production since 1997 and remains the headphone most often named as a neutral reference in owner threads and measurement databases. Its list price is now $499.95; Sennheiser US was selling it for about $350 in October 2026. The sound is neutral and mid-centric with an intimate stage, which suits acoustic music, vocals and classical more than sub-bass-driven genres.
At 300 Ω it needs a desktop amp. Any current amp from about $120 up drives it well; the HD 600 amp guide has the voltage math. More in the HD 600 review .
Who should not buy it: bassheads, and anyone who will only listen from a phone.
Best Warm/Musical: Sennheiser HD 650
See today's price for the Sennheiser HD 650 on Amazon ↗The HD 650 shifts the HD 600’s balance warmer: fuller lower mids, softer treble, more forgiving of bright recordings. It is about $380 on sale ($579.95 list). Owners frequently pair it with output-transformerless tube amps such as the Schiit Valhalla 3, which suit 300 Ω Sennheisers. If you’re torn, read HD 600 vs HD 650 . The HD 650 amp guide covers solid-state and tube options.
The HD 6XX (an HD 650-family model) is still sold as last stock by Sennheiser US at $219.95 if you want the same sound for much less while it lasts.
The Modern HD 650: Sennheiser HD 660S2
See today's price for the Sennheiser HD 660S2 on Amazon ↗The HD 660S2 keeps the HD 650 family’s warmth and adds more sub-bass extension. It is about $480 on sale ($679.95 list), so it fits under $500 only at the sale price. See the HD 660S2 review and HD 600 vs HD 660S2 .
Best Value Sennheiser: HD 505
See today's price for the Sennheiser HD 505 on Amazon ↗Launched in February 2025 at $249 and now $329.95 at Sennheiser US, the HD 505 is a 120 Ω open-back that reviewers place closest to the HD 600 within the HD 500 line. Expect a leaner, brighter tilt and restrained bass. Reviewers also note it wants a proper amp despite the 120 Ω rating. If the HD 600 is on sale for $350, most buyers will be better served by the HD 600.
Best Closed-Back: Sennheiser HD 620S
See today's price for the Sennheiser HD 620S on Amazon ↗Closed-backs that sound open are rare under $500. Sennheiser launched the HD 620S in 2024 at $349.95 and it now sells for around $400. It is the obvious Sennheiser choice if you share a room and want a closed-back built for music listening rather than studio monitoring. If you only need isolation and don’t mind a studio tuning, the Sony MDR-M1 ($250) or DT 770 Pro X ($200) cost far less; see the under-$300 guide
.
Best Planars: Sundara, Then Edition XS
See today's price for the HiFiMAN Sundara on Amazon ↗The HiFiMAN Sundara has become the value planar: 2026 street prices sit well below its old tags, which leaves room in a $500 budget for a proper amp. Details in the planar under-$300 guide and the Sundara amp guide .
See today's price for the HiFiMAN Edition XS on Amazon ↗The HiFiMAN Edition XS is the usual next step: a large open planar with a wide stage. Its 2026 US price wasn’t confirmed when this was checked, so use the button for the live figure. FiiO’s new FT15 planar launched on September 17, 2026 at $499; it is too new for a settled owner consensus, so it’s a watch item rather than a pick.
Analytical Option: Beyerdynamic DT 1990 Pro MKII
See today's price for the Beyerdynamic DT 1990 Pro MKII on Amazon ↗The original DT 1990 Pro is being cleared out; Beyerdynamic now sells the MKII. It keeps the bright, detailed Beyerdynamic character and two pad options. Treble-sensitive listeners should look elsewhere. The DT 1990 Pro review covers the original; we could not confirm a current US price for the MKII.
Amps to Match (Current Models, October 2026)
| Amp | Price | Pairs well with |
|---|---|---|
| Schiit Magni (Unity) | $119 ($199 with DAC card) | HD 600, HD 650, HD 660S2 |
| JDS Labs Atom Amp 2 | ~$129 | HD 600, HD 650 |
| FiiO K11 R2R | ~$170 | All of the above; DAC built in |
| Topping DX5 II | ~$299 | Everything here incl. planars; DAC built in |
| FiiO K13 R2R | ~$319 | Everything here; DAC built in |
| Schiit Asgard X | $399 | Planars and 300 Ω Sennheisers |
| Schiit Valhalla 3 | see Schiit | HD 600/650/660S2 only (OTL tube) |
See today's price for the Topping DX5 II on Amazon ↗ See today's price for the Schiit Asgard X from Schiit ↗
The Magni Heresy, Asgard 3, JDS Atom Amp+ and FiiO K5 Pro ESS that this table used to list have all been discontinued or replaced. For more options see best headphone amp under $300 .
When to Stop Spending
For most listeners, a well-driven HD 600 or Sundara gets most of what $1,000 headphones offer. Above $500 you’re buying a different tuning or a bigger stage, not a night-and-day jump.
Who Should Not Buy From This List
- You’ll only use a phone or laptop. Every open-back here wants an amp. Buy an HD 560S or DT 770 Pro X instead.
- You need noise cancelling. None of these isolate like ANC.
Related: Best headphones under $300 · Best headphones for jazz · Best headphones for classical music · Best balanced headphone amps