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Deal.ai › Compare

Kiwi Ears Cadenza vs Binary EP321 MEMS

The Kiwi Ears Cadenza is the safer pick for most people: a balanced single-driver tuning, a comfortable molded resin shell and a detachable 2-pin cable that is easy to replace. The Binary EP321 MEMS is the specialist: a wide, bright, detail-forward sound with a wood faceplate and a 4.4 mm balanced cable. Reviewers of the Cadenza praise comfort and a natural, easy sound; owners of the EP321 praise clarity and air but warn the treble can tire sensitive ears over long sessions.

  • Choose the Kiwi Ears Cadenza if you want an all-day, balanced IEM that is comfortable, easy to drive from a phone or dongle, and simple to re-cable.
  • Choose the Binary EP321 MEMS if you chase treble detail and a wide stage, and you have a source with a 4.4 mm balanced output.

Prices

  • Kiwi Ears Cadenza: $29.74 at kiwiears (last seen Nov 9)
  • Binary EP321 MEMS: $309.99 at Amazon (last seen Nov 9)
  • Difference: the Kiwi Ears Cadenza is $280.25 cheaper than the Binary EP321 MEMS at the latest prices (Nov 9)
Kiwi Ears
Kiwi Ears Cadenza

Kiwi Ears Cadenza

4.6(456 ratings)
$29.74at kiwiearsChecked Nov 9
See all prices and details
Visit kiwiears
Pros
  • Balanced, natural tuning that suits most genres
  • Comfortable molded resin shell
  • Easy to drive at 32 Ohm and 110 dB
  • Detachable 2-pin cable, easy to replace
  • Nine pairs of tips in the box
Cons
  • No microphone, so no calls from the cable
  • Standard cable is not sold separately
  • Some owners note the cost of a USB adapter
Binary
Binary EP321 MEMS

Binary EP321 MEMS

$309.99at AmazonChecked Nov 9
See all prices and details
Visit Amazon

As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • Bright, detailed treble with lots of air
  • Wide soundstage with clear instrument separation
  • Natural bass that shows up only when needed
  • Distinct wood faceplate on every unit
  • 4.4 mm balanced cable, case and brush included
Cons
  • Treble can be fatiguing over long sessions
  • Lean sound without warmth in the vocals
  • Some owners say the shells feel hollow

What separates them

Kiwi Ears CadenzaBinary EP321 MEMS
Driver10 mm beryllium dynamic driverMEMS driver
TuningBalanced across bass, mids and trebleBright, airy, clarity-first with lean vocals
SoundstageNatural, moderate widthWide with clear space between instruments
ShellMedical-grade 3D-printed resin, molded fitWood faceplate in clear resin, each one different
Cable and plugDetachable 0.78 mm 2-pin, 3.5 mm plugDetachable cable, 4.4 mm balanced termination
Long-session comfortOwners call the fit comfortableTreble can be fatiguing for sensitive ears
Included tips9 pairs of silicone tipsSilicone tips plus carrying case and brush
MicrophoneNot availableNot available

Price history

$309.99$29.74
Nov 7Nov 10
  • Kiwi Ears Cadenza: lowest $29.74 on Nov 10 at Kiwi Ears.
  • Binary EP321 MEMS: lowest $309.99 on Nov 7 at Zettgear; $309.99 on Nov 10.

Prices at every store

Kiwi Ears Cadenza

  • Linsoul AudioNew

    In stockShips from abroad · duties may applyReturn policy

    $29.74Checked Nov 9
    Visit Linsoul Audio
  • kiwiearsNew

    In stockReturn policy

    $29.74Checked Nov 9
    Visit kiwiears
  • eBayNew

    In stock

    $29.75Free shippingChecked Nov 9
    Visit eBay
  • HIFIXAUDIONew

    In stockReturn policy

    $34.99Checked Nov 9
    Visit HIFIXAUDIO

Also available at

  • Kiwi EarsCheck price at Kiwi Ears

Store links may earn us a commission.

All 14 stores and price history →

Binary EP321 MEMS

  • vividsoundNew

    In stockShips from Netherlands · duties may apply

    $331.05Checked Nov 9
    Visit vividsound
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $309.99Free shippingChecked Nov 9
    Visit Amazon
  • ZettgearNew

    Out of stock

    $309.99+ $50.00 shippingChecked Nov 9
    Visit Zettgear
All 3 stores and price history →

Specs compared

SpecKiwi Ears CadenzaBinary EP321 MEMS
Impedance32 Ohm32 ohms
Driver Size10 mm—
Driver TypeBeryllium dynamic driver—
Sensitivity110 dB—
Frequency Response20 Hz-20 kHz—
Shell MaterialMedical-grade resin—
Connector0.78 mm 2-pin—
Cable Plug3.5 mm—
Cable TypeDetachable 4-Core Braided Copper—
MicrophoneNot Available—
Included Eartips9x Pairs of Eartips—
Warranty1 year—
Show all 13 specsShow fewer specs
SpecKiwi Ears CadenzaBinary EP321 MEMS
Connectivity—Wired

What reviewers say

Kiwi Ears Cadenza

  • 4.6 / 5456 ratings

Owners rate the Cadenza highly, with 4.6 out of 5 across 456 ratings. Most praise the sound as far better than expected and the fit as comfortable for long sessions. Complaints are few and mostly about accessories rather than sound.

What people mention
  • Sound qualityPraisedBuyers call the sound incredibly good and some say it changed how they listen.
  • FitPraisedOwners report the molded shell sits perfectly and stays comfortable.
  • ValuePraisedReviewers say the sound is solid for what it offers against rivals.
  • CableCriticisedThe standard cable is not sold on its own, so replacements mean the upgraded one.

Binary EP321 MEMS

Owners praise the smooth, clear, uncolored sound and the high level of detail, and many like the multi-color geometric faceplates. The main complaints are bright treble that tires the ears and shells that feel a bit cheap for what they are.

What people mention
  • TrebleMixedListeners love the air and shimmer up top, but some find it fatiguing over long sessions.
  • DetailPraisedOwners say it pulls out fine texture and small background elements with ease.
  • SoundstagePraisedReviewers describe a wide stage with clear space between instruments.
  • BassMixedBass is called natural and restrained, which leaves some wanting more weight.

Questions and answers

Which is better for long listening sessions?
The Cadenza. Its balanced tuning and comfortable resin shell are easier on the ears. The EP321's bright treble tires treble-sensitive listeners after a while.
Which has more detail in the highs?
The EP321 MEMS. Its treble is brighter and airier, which pulls out cymbal shimmer and plucked-string bite that the Cadenza softens.
Do I need a special source for the EP321?
Yes, for its cable. The EP321 ships with a 4.4 mm balanced plug, so you need a source or dongle with a 4.4 mm output. The Cadenza uses a standard 3.5 mm plug.
Which is more comfortable?
The Cadenza. Its molded resin shell is widely described as a secure, comfortable fit. The EP321 is fine for most ears but its brightness, not its fit, is the usual complaint.
Is the EP321 worth stepping up to over the Cadenza?
Only if you want a wide, bright, detail-first sound and have a balanced output. For a balanced all-rounder, the Cadenza covers more music with less fatigue.

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