#1
Sony MDR-7506
Studio standard · 63Ω, 10Hz–20kHz, closed dynamic, 3.5mm jack$70–$105 usedBest for: Recording engineers and mixing professionals who need the industry-standard reference headphone
The MDR-7506 is the most-used headphone in professional studios and broadcast facilities worldwide. Flat frequency response, excellent isolation, and legendary durability. Lots of people have worn these — they are bulletproof. Replacement ear pads cost $20–$30, extending life indefinitely.
What to check used: No inline controls or detachable cable on older models — verify model year. Sound is clinical (not colored), which some find "boring" at first listen.
#2
Beyerdynamic DT 770 Pro
Studio professional · 80Ω or 250Ω, 5Hz–35kHz, closed dynamic, detachable cable$100–$150 usedBest for: Music producers and sound engineers who want exceptional build quality and smooth midrange
Beyerdynamic is legendary German audio engineering. DT 770 Pro is a workhorse in home studios. Smooth, warm midrange (flatters vocals). Excellent isolation. Build is extraordinary — many are 20+ years old and still working. 80Ω version for portable use; 250Ω for studio amp use.
What to check used: Bass is enhanced (+5dB around 150Hz) — if you need surgical flat response, Sony MDR-7506 is more neutral. For music mixing (not mastering), DT 770 is excellent.
#3
Audio-Technica ATH-M50x
Portable professional · 38Ω, 15Hz–28kHz, closed dynamic, detachable cables$80–$130 usedBest for: Sound engineers and producers who need portability without sacrificing monitoring accuracy
ATH-M50x is the M50 updated with better comfort and detachable cables. Excellent noise isolation (passive), lightweight for portability, flat frequency response suitable for mixing. Often seen in portable recording rigs and podcast studios. Professional finish, reliable.
What to check used: Slightly boosted presence peak (4–5kHz) — not as neutral as Sony or Beyerdynamic, but acceptable for mixing in less-than-ideal environments.
#4
Sennheiser HD 280 Pro
Compact professional · 64Ω, 8Hz–25kHz, closed dynamic, detachable cable$70–$105 usedBest for: Location recording engineers and broadcast professionals who need maximum isolation in a compact form
Sennheiser HD 280 Pro is purpose-built for isolation — one of the best passive isolation specs in closed-back headphones. Excellent for drum tracking (isolate bassist so they only hear click), or outdoor location recording. Detachable cable, lightweight.
What to check used: Slightly boomy low end (120–200Hz peak) — not ideal for bass-heavy mixing, but acceptable for monitoring during tracking.
#5
Shure SRH440
Budget professional · 44Ω, 12Hz–20kHz, closed dynamic, detachable cable$60–$90 usedBest for: Beginners and home recordists who want a reliable closed-back professional headphone on a tight budget
Shure SRH440 punches above its price point. Flat enough for mixing, excellent isolation, detachable cable for longevity. Used market prices are low — often sees as $60–$80. Good gateway into professional monitoring headphones.
What to check used: Comfort padding is basic — extended wear (4+ hours) may cause ear fatigue. Pad upgrade is available ($40).
#6
AKG K361
Portable reference · 32Ω, 12Hz–20kHz, closed dynamic, foldable, detachable cable$80–$120 usedBest for: Producers and mix engineers who need portable reference headphones for checking mixes on the go
AKG K361 is designed for portable monitoring. Folds for travel, excellent isolation, flat frequency response, lightweight. The 32Ω impedance runs on portable devices without an amp.
What to check used: Less robust build than Beyerdynamic or Sony — good for 5–7 years of portable use, not a lifetime instrument like DT 770.
#7
Beyerdynamic DT 990 Pro 250 ohm
Open-back reference · 250Ω, 5Hz–35kHz, open dynamic, detachable cable$100–$155 usedBest for: Studio professionals who want open-back soundstage for detailed mixing (complementary to closed-back isolation sets)
DT 990 Pro is the open-back counterpart to DT 770. Excellent for detailed listening and mix checking — the soundstage reveals stereo placement that closed-back headphones hide. Many studios use both: closed-back (DT 770) for tracking, open-back (DT 990) for mixing.
What to check used: Open-back = no isolation, sound leaks to surroundings. Not for tracking. For mixing comparison, excellent.