April 19, 2021

Gadget Generations

Tech Review of your favorite gadgets

IKKO OH1 IEM Review:- Budget Sub-Bass King??


IKKO Audio is a fairly new name in the industry. It is a China-based audio equipment brand specializing in HiFi audio gears such as IEMs, USB DAC/AMPs, and more. They gained international attention with their OH1 and OH10 IEMs. Today I am gonna share my impressions of the IKKO OH1, a hybrid pair of IEMs featuring a dual-driver hybrid setup inside beautiful aluminum alloy shells. So let’s begin.



The IKKO OH1 is provided to me for auditioning by Hifinage.com in return for my honest opinion. All thoughts in this review are based on my own experience with the pair over the past week. You can purchase the OH1 in India from Hifinage from the link below.

Package & Accessories:-


The IKKO OH1 comes in a very cool anime-style packaging. It has a beautiful anime printed on top of it with the IKKO Meteor branding logo(Meteor OH1 is the full name of OH1) along with some features such as comfortable wear, aluminum alloy shell, dynamic sound. On the back, we have some more details about the pair in different languages. We have to pull out a denim-style heavy cardboard case from this outer packing. This holds the beautiful OH1 along with all the included accessories. The packing presentation is superb and premium. IKKO nails it in this department with its quality accessories and beautiful anime packaging design.


Package Contents:-

>One pair IKKO OH1 earphones.

>One 2-pin cable with 3.5mm termination plug.

>One carry pouch.

>Three pairs of Blue silicone ear tips.

>Three pairs of Black silicone ear tips.

>One IKKO lapel pin.

>Customer service card.

Design & Build Quality:-

The IKKO OH1 earpieces are built like a tank. They are made up of aluminum alloy and are quite heavy if we compare them to Resin made shells. I personally have no issues with their weight as well as I have previously used other metallic IEMs such as the CA Solaris OG and Tin HiFi P2. In terms of design, the OH1 looks quite unique with its Blueish tone and textured faceplates. Loved the beautiful looks and elegant design of the OH1. The included cable is a 4-core cable with two-pin connectors and a 3.5mm termination plug. The connectors have a red color indicator on the right side.


I personally don’t like using such carry pouches as they are not as efficient as carry cases. While I liked the strong hefty aluminum build of the earpieces the included carry pouch is just above average.

Fit & Noise Isolation:-


The ergonomically designed OH1 earpieces sit firmly into my medium-sized ears. They cover my ear canal completely and provides a good level of noise isolation even when I am outside. I get no issues with a bit heavyweight of the metallic shells in fact I find them sitting firmly into my ears and no fall-off issues.

Driving the IKKO OH1:-

The IKKO OH1 is a very easy to drive pair. I enjoyed it with my smartphone Honor View 10, Cayin N3 DAP, NX4 DSD portable DAC/AMP, and Topping E30/L30 DAC/AMP combo. It doesn’t require any such high-resolution player and provides good sound quality directly through smartphones. Here are my findings with the different pairings.

With Honor View 10:-


The OH1 is driven at adequate volume with good bass depth and detail retrieval at around 11/15 volume levels of the View 10. It shows no lack in detail retrieval and sounds pretty good.

With Cayin N3:-


OH1 sounds a bit warmer than neutral in this combo. There is no need to go above 60/100 volume for adequate volume with this combo. Bass and treble showed good extensions.

With NX4 DSD(paired with N3/ MacBook using USB DAC function):-


The pair sounds neutral with an emphasis on the bass portion. The output is wider as compared to the previous two pairings. Also, it gets loud even at 50% volume on the NX4.

With Topping E30+L30 Combo:-

There is no need to go this powerful for OH1. It required like 30% volume only and sounded cleanest among all the pairings. The signature is similar to that with NX4 DSD.

Sound Quality:-

The IKKO OH1 has bass emphasized sound signature. Especially in the sub-bass portion. The pair produces such a powerful rumble in the sub-bass portion that it can literally satisfy the bass hunger of a basshead. But it’s not only the bass that this pair delivers, it delivers a neutral response for the mids and a safe, smooth treble frequency response. The best part is even with such powerful bass there is no muddiness in the other frequencies. Both the male and female vocals show good resolution and clarity. Let’s share my impressions in different frequencies.


Lower End:-

This is where the OH1 shines a lot. Powerful sub-bass with good extensions, check. Quick, punchy mid-bass slams, check. The OH1 delivers a clean, powerful lower end that complements the other frequencies. The bass slams are tight, controlled well within their region showing no muddiness or leakage to other frequencies. Such thick bass provides weight to the instruments such as pianos, guitars, and more. Listening to EDM, Hip-Hop artist is a groovy and fun experience with the OH1.


The mid frequencies are a bit recessed. But they don’t lack in performance, presenting us with a transparent presentation. Acoustic instruments such as Guitars, are presented with good detail and body. Both the male and female vocals sound engaging and immersive.


The OH1 presents relaxed, smooth treble frequencies. There is no harshness or sibilance present with any of the instruments even at louder volumes. Cymbal crashes, Electric guitars sound engaging and detailed, the detail retrieval is actually quite good across the frequency range. Complex genres such as heavy metal are presented well with good clarity.

Soundstage & Imaging:-

The OH1 has an intimate sound presentation. It has average width and depth, but with good clarity shows good instrument separation and imaging for its price range.

Final Verdict:-


I personally loved the fun sound signature of the OH1. IMO it has the best sub-bass in its price segment. That thick rumble adds weight to the tones and provides an extraordinary experience. Actually thinking of grabbing a unit of OH1 for myself, but I am waiting for trying the OH10 too before pulling the trigger. In my opinion, at about 150$, IKKO OH1 is a pretty solid pair to own.

Final Scores
  • 8/10
    Package & Accesories - 8/10
  • 9/10
    Build Quality - 9/10
  • 9.5/10
    Lows - 9.5/10
  • 8.5/10
    Mids - 8.5/10
  • 9/10
    Treble - 9/10
  • 8/10
    Soundstage - 8/10