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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want to share one source with up to six pairs of headphones while adding real bass and vocal punch, choose LZSIG Headphone Amplifier; if you need a single sealed pair of drum-focused headphones that shuts out the room and lets you ride the volume on the cable, choose Superlux HD667.
• LZSIG Headphone Amplifier — biggest strength: Six independent outputs with per-channel volume, a bass boost circuit, and Stereo/Mono switching in a metal chassis, so one mixer or interface can feed a whole room of listeners.
• LZSIG Headphone Amplifier — biggest trade-off: It is a distribution and monitoring tool, not a listening device. You still need your own headphones and a source, and it runs on DC 12V with the included adapter.
• Superlux HD667 — biggest strength: A closed-back over-ear design built specifically for drummers, with 40 mm dynamic drivers, 102 dB sensitivity, 32 ohm impedance, and a 2 m detachable cable with in-line volume control.
• Superlux HD667 — biggest trade-off: It serves one listener at a time, and its 10–20,000 Hz tuning and 335 g weight are aimed at isolation and percussion work rather than all-day casual listening.
• Who each pick is for: Choose LZSIG if you are the person running the session and multiple people need to hear the same feed. Choose Superlux HD667 if you are the person behind the kit who needs to hear the track and nothing else.
The LZSIG LHA2 is a 6-channel stereo headphone amplifier. In plain terms, one audio input goes in and six independently controlled headphone outputs come out. Each of those outputs has its own level knob, which is the feature that matters most in a real session. Nobody has to share a volume setting. The drummer can have it loud, the producer can have it quiet, and neither one touches the other's mix.
The spec sheet reads like a home-studio utility box. It supports up to six pairs of 32–100Ω headphones with 50 mm drivers, accepts both 1/4" and 1/8" TS and TRS plugs, and works with PC, phone, audio interface, DJ mixer, or tablet outputs. Inside, LZSIG lists nine ROHM low-noise operational amplifiers, and the circuit is described as anti-crosstalk so one channel's signal doesn't bleed into another's. There's also an S/M switch for Stereo or Mono, which is genuinely useful when you're feeding a mono cue or checking a single-sided mix.
Then there's the bass boost. Pressing it lifts the 400–600 Hz and 3000–7200 Hz bands, which is where a lot of vocal body and low-mid weight live. That's not a subtle audiophile curve; it's a monitor-friendly tilt that makes a click track, a bassline, or a vocal easier to lock onto in a noisy room. It applies per channel even when the unit is just acting as a splitter.
Who should buy it: anyone running a small studio, a rehearsal space, a podcast with multiple guests, or a DJ setup where several people need the same cue. Anyone tired of daisy-chaining cheap splitters and losing volume control. The metal chassis and heavy-duty knobs suggest it's meant to survive being packed into a bag for gigs, and at roughly 4.13 x 2.95 x 0.98 inches it takes up very little desk space.
Who should skip it: if you only ever listen alone, this is overkill. You'd be paying for six channels you'll never use, and you'd still need to supply your own headphones. It also needs DC 12V power, so it isn't a pocket device. If your goal is simply "give me one good pair of headphones," this is the wrong product category.
The Superlux HD667 is a different animal entirely. It's a closed-back, over-ear headphone with 40 mm dynamic neodymium drivers, 32 ohm impedance, 102 dB sensitivity, and a 10–20,000 Hz frequency range. Superlux positions it squarely at drummers: rehearsing, recording, and playing live. The 32 ohm impedance and 102 dB sensitivity mean it doesn't demand a powerful amp to get loud, which is exactly what you want when it's plugged into a drum module, a small mixer, or a phone.
The closed-back design with the included ear cushions is the headline feature. Isolation is the whole point for a drummer — you need the click and the backing track to cut through a live kit without turning everything into a volume war. Sealed cups plus a snug over-ear fit do that job in a way open-back headphones simply can't.
The cable is where the practical thinking shows. The 2 m detachable cable has an in-line volume control, so you can duck or raise the level mid-song without reaching for a knob on the module. It ships with a gold-plated stereo mini plug and a 3.5 mm to 6.3 mm adapter, so it works with electronic drum kits, acoustic drum monitoring, bass, keyboards, and guitar amps. The foldable design and soft velvet pouch make it travel-friendly.
Weight is the honest trade-off. At 335 g (11.81 oz) without the cable, this is not a featherweight. For a 45-minute rehearsal it's fine; for a six-hour session you'll notice it. The enclosure mixes metal and plastic, and there's a 1-year manufacturer warranty on the pair.
Who should buy it: drummers first and foremost, but also bassists, keyboard players, and anyone tracking in a live room who needs isolation and quick volume access. The 32 ohm impedance keeps it flexible across gear.
Who should skip it: if you want one pair for commuting, mixing reference work, or long listening sessions, the isolation-first tuning and the weight work against you. And if you need to feed several people at once, one pair of headphones can't do that.
• Best for multiple listeners at once → LZSIG Headphone Amplifier. Six outputs, six independent volume knobs, one input.
• Best for isolation in a loud room → Superlux HD667. Closed-back cups and cushions are built to block external noise.
• Best for quick on-body volume changes → Superlux HD667. The in-line control on the 2 m detachable cable is right at your hand.
• Best for adding vocal and bass emphasis to a shared feed → LZSIG Headphone Amplifier. The bass boost targets 400–600 Hz and 3000–7200 Hz per channel.
• Best for plug-and-play with a drum module or amp → Superlux HD667. 32 ohm, 102 dB, and both 3.5 mm and 6.3 mm connections included.
• Best for a metal, gig-bag-ready build → LZSIG Headphone Amplifier. Solid metal chassis and heavy-duty knobs.
• Best for portability and storage → Superlux HD667. It folds and comes with a velvet pouch.
• Best for mono cue checking → LZSIG Headphone Amplifier. The S/M switch flips between Stereo and Mono input handling.
• Best for running several headphone models of different impedances → LZSIG Headphone Amplifier. It supports up to six pairs in the 32–100Ω range.
These two don't really compete — they solve different halves of the same problem. In my opinion, the LZSIG Headphone Amplifier is the pick if you're the one running the session and multiple people need to hear the same source with their own volume. The six channels, per-channel control, bass boost, and metal build make it a genuinely useful hub rather than a gimmick splitter.
If you're the player and you need one pair that isolates you from a live kit, the Superlux HD667 is the one I'd buy. The 40 mm drivers, 32 ohm impedance, 102 dB sensitivity, and in-line volume control are exactly the spec set a drummer wants.
FAQ
what is studio monitor headphones
Studio monitor headphones are designed to reproduce audio accurately rather than flatter it, so you hear the mix close to how it actually is. The Superlux HD667 fits this idea with 40 mm dynamic drivers, 32 ohm impedance, 102 dB sensitivity, and a 10–20,000 Hz range. The LZSIG amplifier supports that job by feeding up to six pairs of 32–100Ω headphones with independent level control.
why do djs wear headphones
DJs wear headphones to cue the next track before the crowd hears it, which means they need isolation and quick level changes. The Superlux HD667's closed-back design blocks room noise, and the in-line volume control on its 2 m cable lets you adjust without looking away from the decks. Its 32 ohm impedance and 6.35 mm jack suit typical mixer outputs.
why djs wear headphones
Same reason: pre-listening. You're matching beats and checking levels on a track the audience can't hear yet, so sealed cups matter. The HD667 pairs a closed-back over-ear fit with 102 dB sensitivity, so it gets loud from a mixer without extra amplification. It also includes a 3.5 mm to 6.3 mm adapter for different gear.
why do djs need headphones
A DJ needs headphones to monitor upcoming tracks, catch cue points, and hear detail the main speakers blur. If several people in the booth need the same feed, the LZSIG amplifier's 1-in-6-out design with per-channel volume and Stereo/Mono switching covers that. If it's just you, one isolated pair like the HD667 is the simpler answer.
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