Review : Cowon Plenue D2 – Back to the future

Sound performance

For the purpose of this review, I used my Onkyo IE-C3 for IEM testing and the all-new Fearless S6-Rui and the Fostex TH-610 for headphones comparisons. All files were FLAC 16/44 or FLAC 96/24 from Qobuz.

Overall signature

Out of the box, the Cowon Plenue D2 is very, very flat. It sounds more like a professional system rather than an audiophile setup : clean and dry with a very wide soundstage. Dynamics are excellent and you easily discern every detail, even when you listen at quiet volume. Stereo crosstalk is so good, that I even got this delightful sensation where you turn your head, thinking someone is calling for you.

After a few hours of listening, I had to admit this sound signature wasn’t exactly keen to my ears. It was a bit… tasteless. Sure, you hear every detail, tremendous vocals and pitch-black background, but that didn’t shake me up. Until I began to play with the BBE Effect, and more importantly with the BBE Mach3Bass.

It’s night and day once you activate this mode : as if a veil was lifted. I know I know, it’s a sentence you may have read… a lot. But bear with me this time, the Mach3Bass is the only DSP you may ever, ever, need. The preset doesn’t just lift up the bass, it applies a few delay effect, soundstage correction and a swift push from 20hz to 100Hz.

I couldn’t listen to the Cowon Plenue D2 without this preset anymore. It’s like going from a petrol car to an electric car, you know it’s better but you can’t grasp how good it is until you put the foot down. The bass is never oppressive and gives you one of the most accurate “live sensations” on any source, at this level of price.


Highs : accuracy without the harshness. The Cowon Plenue D2 is made and dedicated by sound engineers : no sibilance and flat render up to 20kHz. I listened to my usual test track, Summer 3 from Vivaldi, found on Remastered from Max Richter and could spot each violin and viola. A very good job from Cowon.

Mids : flat and subtle. Mids aren’t bad nor are they amazing, voices are clean but it doesn’t grasp you as much as I would expect. What helps is the superb soundstage, Tender Surrender from Steve Vai is a great track to understand how far the Cowon Plenue D2 is good in this aspect.

Lows : amazing. Just activate the BBE Mach3Bass and I dare you to deactivate it, later on. Seriously.

Noise and power

Noise : absurdly silent, even on my Onkyo which are prone to hiss. I think it’s one of the cleanest DAPs I have listened to at this level of price.

Power : output power is rated at 4Vrms in balanced mode. This can be attained once you activate the headphone mode from the main menu (high gain) and helps to drive bigger cans. Of course, there is no miracle here, don’t expect to drive massive headphones like the HD800S or the HD820, but a Fostex TH-610 was powered with ease.

On portable gear, like IEM or headphones such as the Meze 99 Classics, it’s perfect. I never thought the Plenue D2 lacked power at any moment, and with 140 steps there is room for any listener out there. No channel imbalance was detected, even at the lowest volume. Hurray.


The Cowon Plenue D2 is a strange player, one that sits between two eras. It boasts no wifi, no streaming, no USB, no USB-DAC or USB-out and even suffers from a low-res screen… Yet, it grew on me.

It’s fast, easy to use, blazing fast to boot up and battery life is nothing short of amazing. It’s the perfect player for long travel or commute, if you don’t mind relating on hard copied music. Something very strange for me.

Soundwise, it’s faultless as long as you stick to portable gear (no Sennheiser HD800). BBE Effects are still, and by far, the best DSP you can get for any DAP at this point. I’ve used the BBE Mach3Bass from the first day and I think this player can compete with high-end sedentary gear on this point. The Plenue D2 could be used as your main source on the go, if you’re a sound engineer.

I’m still a nerdy guy, leaning toward quirky players and DACs, but sometimes simplicity is best. And that’s the Cowon Plenue D2 : simplicity at its best. A sure choice for today and tomorrow.


A nerdy guy with a passion for audio and gadgets, he likes to combine his DAC and his swiss knife. Even after more than 10 years of experience, Nanotechnos still collects all gear he gets, even his first MPMAN MP3 player. He likes spreadsheets, technical specs and all this amazing(ly boring) numbers. But most of all, he loves music: electro, classical, dubstep, Debussy : the daily playlist.


    • Reply April 15, 2019

      Bo T.

      Funny, I almost never use the BBE Mach3Bass on my Plenue 1 because of its bloated bass.

    • Reply April 16, 2019


      I own the questyle Qp1r
      Do you think that, soundwise, the Cowon is equal, better or not quite as good as the Questyle ?
      I’m wondering to sell the Questyle and buy the Cowon…

      Thanks a lot !


    • Reply April 17, 2019


      As a self-confessed Cowon fanboy, it’s great to see their players getting more coverage in English-speaking markets these days. It seems that unlike Fiio, iBasso, A&K, etc. they’ve been behind in their marketing and international outreach until late.

      I had the Plenue V which is a very similar player – same screen and UI, just with one CS43131 chip instead of two, and only 3.5mm out. It’s a fantastic player, and I only sold it as got a hankering for going back to a larger screen Plenue with it’s snappier UI. With the PD2 released I’m very curious to hear the differences in the single vs dual DAC format, but probably never will.

      I agree start up times with Plenues are superb. Personally, Mach3 bass is a bit too much for me, mainly as I use bass-heavier cans like the B&W P7, Momentum 2 or HD58X. My go-to settings are BBE or BBE MP; it’s not just the EQ but change in soundstage they bring which lifts the sound to be more gripping and immersive 🙂

      Thanks for the informative review!

    • Reply May 5, 2019


      This one, or the Hidizs AP 80?

    • Reply October 29, 2019


      How is the sound compared to plenue 2 ?

    • Reply December 9, 2019

      Gary Bou

      I tested my D2 with 15 different headphones
      Like Sennheiser 4, AKG 3, Byer 1, Sony 1, Audio Tech 2
      Koss 2, Hifimann 1, KZ AS16

      Best sound with ALL AKG headphones!
      AKG Q701 Way better then other brands

      • Reply May 27, 2020


        Is the D2 able to drive the AKG712pro? And not just so, but very well?
        I got the D1 for super cheap but my desktop DAC died and now I’m debating if I should get the D2 or a portable dac/amp. I don’t necessarily need a dac for my PC but I want to drive the AKG712 with my Cowon Plenue D or Plenue D2.

    • Reply December 30, 2019


      How does the D2 compare to the HIby R3 Pro? I can’t find any direct comparisons online, which is weird since they both use the same DAC set. The Hiby has more modern features than the D2, AND it’s over $100 cheaper. However, if Cowon has a better overall implementation of the DAC that yields better sound quality and power, I might be able to sacrifice the extra features and lower price tag of the R3 Pro. Anyone else?

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