Quill Audio Karma

The Sound of Good Vibes!

PROS: low price, unique driver design, very satisfying physical bass performance of DD driver, natural, detailed tuning, hugely expanded, holographic soundstage, modular copper cable (3.5mm and 4.4mm), premium accessories including quality leather storage case, and Eletech and Symbio eartips.

CONS: eartips dependency on the sound tuning (highly encouraged to take your time with eartips rolling).

The product was provided to me free of charge for review purposes in exchange for my honest opinion.

Available for sale from authorized retailers, such as Musicteck.

Intro.

After discovering Quill Audio last year at CanJam NYC ‘25 and having the chance to borrow their debut release, Satin, for testing and a first look write-up, I was hoping they would introduce something new again this year at CanJam NYC ‘26. They did, but it was an unofficial early prototype of their upcoming release. I had no details about its driver config and only listened to it briefly. Months later, I heard more of their prototypes as they neared final tuning, maturing with each update. I still had no idea about the final design or the price, or where it would stand relative to Satin. When I tried to find more info about it, Andrew and Leo at Musicteck asked me to guess the price, and… my guess ended up being almost 3x higher than what it was actually supposed to be.

I usually keep a neutral tone in my reviews, without exaggerated emotions or clichéd praises such as “punches above its price point.” Yet, I’m already starting this review talking about the price/performance ratio of IEMs before I even got to the Conclusion. There is no denying it, I was quite impressed with Quill Audio’s sophomore release of Karma IEMs, their design, their tuning, and a very heartfelt story behind their collaborative creation, which you can find in detail under the Musicteck product listing. And I was also surprised by their (Karma) price and became very curious when I heard that Quill is also working on their next flagship release. Here is more to tell you what I found after spending the last few weeks with these new Karma IEMs from Quill Audio.

Unboxing and Accessories.

I found Karma’s unboxing experience quite satisfying and unique. While priced at the entry level of today’s premium IEM market, I think it offers a few surprises. These IEMs arrived in a compact square cardboard box, tightly packed inside with various protective layers. Aside from two colorful and very informative booklets, in English and Chinese, covering all the details behind this design and its inspiration, there was a secure cutout setting for IEMs along with a metal warranty card that had the same design as the faceplate of the IEMs. I have to emphasize again how tightly it was packed, so be careful when removing these “layers.”

Once you get to the bottom of the box, you will find a custom round leather case. This was not your typical cookie-cutter puck-shaped case. It has soft, premium-quality leather, a secure zipper, and a leather zipper pull tab. Inside, in addition to the cable, you will find two uniquely 3D-printed eartip organizers for the included stock premium Eletech Baroque Stage (S/M/L) and Symbio Orange Peel (S/M/L) eartip pairs. It was clever to introduce a different way of presenting eartips.

Cable.

The stock cable included with Karma is made of 6N-purity Monocrystal Copper and features a 2-wire COAX design with a separate layer of copper shielding. Each wire/conductor connects to a universal 2-pin connector, also featuring pre-shaped heat-shrink earhook guides and a clearly marked (L/R) connector housing. The Y-Split has a unique design, with a retractable chin slider and two conductors, loosely twisted below it, that connect to a matching design modular headphone plug.

The headphone plug has a 4-pin socket, and you have a choice of 3.5mm SE or 4.4mm BAL tips, which attach securely as you align them with a separate guide pin and use the plug’s threaded housing to tighten the connection. While there is nothing revolutionary here, it was thoughtful to include a 3.5mm option, just in case. Who knows, maybe due to Karma’s collab with a performing band, some of the stage equipment only uses 3.5mm-connection wireless packs. But either way, you have an option for cable termination here.

Also, would like to add that the cable features a flexible, nylon-braided paracord-type outer jacket. And to my surprise, the microphonics were hardly noticeable. Usually, it is more pronounced in similar jacket-design PWA cables, but those are tighter, and you have to wait over time for it to become softer and less microphonic. Here, the paracord outer layer was already broken in and soft to the touch.

Design.

Under the hood of Karma, you will find a 6-driver quadbrid architecture with a 5-way passive crossover, through a 4-duct system, featuring the following drivers:

1x 10mm Graphene Composite DD (sub-bass & bass)
1x Quill co-developed custom BA (low-mid & upper-mid)
2x Sonion BAs (treble)
1x Planar Driver (ultra-high)
1x Full-range PZT Bone Conduction (full-range)

I would say that at the heart of Karma design is its DD driver, part of a Depthwave bass architecture featuring a custom Q.Force 2.0 10mm Graphene Dynamic driver and an exclusively engineered rear-cavity structure. Then, inherited from their higher-end Stain IEMs, there is also a nano-tube, micron-scale, ultra-fine bass conduit to control the low-frequency response and minimize bass distortion. Another thing inherited from Karma was a nested-tube filter with a layered structure, applicable here for mid-range sound tuning.

On the other side of the frequency range, the Quill team came up with AERO architecture, Acoustic Extension & Resonance Optimization chamber. Interestingly, this idea came up during the Satin development but was implemented only in Karma after six months of continuous refinement of the chamber. Then, while testing, they realized how much AERO design and the choice between wide- and narrow-bore eartips affect Karma’s sound tuning, one of the reasons why the Quill team emphasizes the importance of eartip selection here.

The design wasn’t just optimized inside, under the hood, but also on the outside, featuring a universal shell with a contoured shape and a custom-like fit. The shells are lightweight and compact, with a perfect fit for any size of ears and earcanal. The nozzle has an average length and diameter, a comfortable angle, and an overall fit that lets you use it for hours without fatigue. There is a properly sized DD driver vent that does not cause any driver flex, and an adequate lip at the nozzle tip to hold eartips securely. The faceplate design is also unique and not too flashy.