Astell&Kern - PEE51 (Unboxed)

Portable Hi-Res USB-C DAC
Sale price₹ 5,499 Regular priceMRP: ₹ 10,999

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7 Day Replacement Guarantee

In case you receive the Astell&Kern - PEE51 (Unboxed) with a manufacturing defect, please raise a return request within 7 days of delivery.

However, if you receive an incorrect / damaged / different product or one with missing accessories, please raise a return request within 24 hours of delivery. In case you receive a product with a missing, incorrect, or faulty accessory, you will be given a replacement accessory instead of the entire product.

Please make sure that the product is in the original packaging with all the accessories it came with. We'll also need an unboxing video and images of the parcel to investigate about the discrepancy. You may be asked to share images of the product and the packaging received for us to determine the damage or defect prior to approving the return request. The free replacement will be shipped only once the original order is returned.

A replacement will be issued only if:

- It is found to be defective
- It is determined that the product was not damaged while in your possession
- The product is not different from what was shipped to you
- The product is returned in original condition (with brand’s/manufacturer's box, MRP tag intact, user manual, warranty card and all the accessories therein)


Warranty & Services

Don't sweat it, this Astell&Kern - PEE51 (Unboxed) comes with a 1 Year warranty from Astell&Kern that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about Astell&Kern's warranty in India.

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Designed in

1 Year of

Ideal for Audiophiles

These DAC & Amps are designed for discerning music lovers. If audio quality is important to you, a set of DAC & Amps like these would be ideal.

You can expect these DAC & Amps to present you with a refined listening experience. The audio quality exhibited by these DAC & Amps is a beautiful mix of musicality, technical brilliance and high precision.

These DAC & Amps deliver a spacious & open soundstage that makes you feel you are sitting at a live concert. Experience the magic and delve into pure sonic tranquility!

Best Suited for Portable Use

For those who value them, being able to carry their favourite DAC & Amp equipment when they are on the move is invaluable.

These DAC & Amps offer the ultimate portability experience without sacrificing sound quality. If you’re someone who appreciates cutting-edge engineering, quality sound and portability, then look no further.

Designed to be trusty companions, these DAC & Amps are cleverly engineered with the latest technology to offer the ultimate combination of portability & Hi-Fidelity!

Ideal for

Cirrus Logic CS43198
Dual DAC Chip

Pair with Laptop via USB

A majority of people use a laptop as the primary source device to listen to music or watch movies. Since the laptop is an essential part of the audio chain there are headphones and devices designed to work a laptop or computer system flawlessly. With the availability of USB connectivity, it becomes easier to pair various devices like an Amp, DAC or even headphones without worrying about drivers or any additional piece of software.

2 Vrms
Power Output


Super Lightweight

Headphone Zone Certified Unboxed Units

Unboxed units are as good as new products with the product's packaging being unavailable. These products give you the same satisfaction of new products - but at down-to-earth prices. Usually, the product's packaging may have gotten damaged in transit. Customers use a product once or twice and then return it with opened up packaging.

Customer Returns

Returned headphones are fully functional products that have left the warehouse and therefore can no longer be sold as new as their packaging has been opened. The product may have been used once or twice by the customer who returned it.

Transit Damages

Sometimes we receive headphones in damaged packaging due to shipping accidents. These are brand new headphones with cosmetic flaws on the packaging.

Save Upto 15%

Since you won't get the original packaging, we give you a good discount compared to a new headphone.

Professionally Inspected

A thorough inspection means you receive a 100% working headphone with no sound output issues.

Original Warranty

All unboxed headphones carry the same warranty period as a brand new headphone would.

Unbiased Customer Service

We have the same Headphone Zone customer support experience for Unboxed Products or new products.

Unchanged Replacement Policy

Received a defective Unboxed unit? Return it under our Replacement Policy.

All Original Accessories

The unboxed headphones itself comes with all original accessories.

1 Year Warranty

Don't sweat it, this Astell&Kern - PEE51 (Unboxed) comes with a 1 Year warranty from Astell&Kern that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about Astell&Kern's warranty in India.

Luxury Meets Innovation: Difference in Sound Quality

Founded in October 2013 in South Korea, Astell&Kern is a premium audio brand renowned for its commitment to delivering uncompromised hi-res audio experiences. Derived from Greek, where "Astell" means "Stars" and "Kern" means "Core," the brand symbolizes the pursuit of capturing the essence of music—the "original sound." Astell&Kern addresses the decline in audio quality due to inferior formats like MP3, aiming to revive sound integrity for musicians and enthusiasts alike.

Their diverse product range, from audio players to earphones, reflects their dedication to precision and accuracy in sound reproduction. With acclaimed offerings like the Astell&Kern AK XB10 and Astell&Kern Billie Jean, they continue to enrich music and listening experiences globally, delivering soul-touching sound.

Explore Collection
IGN Awards

5 Star Review

What HiFi
May, 2021


"That know-how has been put to good use in offering USB-C device owners an affordable, practical way to soup up their smartphone or desktop sound through wired headphones."

Read More
Major HiFi

"Dual DAC Cable ultimately showcases greater refinement in both feel and listening than even its premium competitors, its higher output impedance in particular makes it a far more situational buy."

Read More

Customer Reviews

Based on 29 reviews
Rookie Techie (Guntur)
Great DAC but android limitations will kill it.

If u pair any DAC with Android USB-C port ,the maximum transfer limit is 16bit/ may need to use players like USB Audio Player pro app for full bandwidth but again this app does not support streaming apps except tidal for now..
Hope this helps in purchasing any DAC specially for android.

Hey, thanks for sharing this honest feedback, we really appreciate it!

Jagadish Talluri (Hyderabad)
Design and Comfort:
Sound Quality:
Value for Money:
Bang On!
Not at all
Complicated, Painful and Limited.

I didn’t find any youtube review which is detailed on this DAC, waited for 6 months before purchasing. On paper the specs are good but unable to find any solid review on sound quality and thought of trying it out myself. This DAC is on my wishlist for a very long time and as there is discount and exchange policy, I found the courage to buy. My interest is in the sound signature of A&K with dual CS chips implementation with explicit amplifier. (I already liked Sonata Tempo Tec HD Pro which has a single CS chip)

First, the Good:
1. Build, nothing like this on market. Amazing feel in hand.
2. Vocals, wonderful on some tracks. Forward Vocals.

Rest, the Bad:
1. Volume is non-linear
2. Equilizer is needed for many tracks
3. Not for all kinds of music

1. Volume: Volume increments are not equal. On Apple iOS below 80%
and on Android below 60% is equal, after that it is LOUD, painful. Apple 80% is same as Android 60% in volume perception with this dongle. Issue is below the limit it is not sufficient and above the limit its unbearable. Rarely you will find the sweet spot. If you are someone who listens at low volume or you have only KZ IEMs then you wont cross the percentage limit and can be happy. But I am not happy. Either if they implemented well or provided volume buttons this can be manageable on phones. On mac volume issue is not there.

2. Equilizer: Treble is high, you feel like adjusting it for each and every track to make your music sound nice. Without EQ you will feel like sounds are uneven between vocals and instruments of higher freqency(treble). I felt like to touch EQ frequently is complicated and inconvenient. On both macs and phones EQ is needed.

3. Limited: Not good for all kinds of music. Good on predominantly Vocals(both male and female). Indians cinema music is a fusion of vocals and instruments. This dac is not able to balance them out of the box.

The vocals are so good that you will feel like to go near them intimately by incresing volume and out of blue some unwanted high frequency instrument intrudes like it stabs you in the heart. All tweaks starts here to avoid this, like changing volume, EQ, cables, tips, sample rates, devices, etc. Success comes rarely on few tracks on mac and then they are enjoyable. On phones the luck is low due to above issues.

Also good with instruments like flute, violin, guitar, lute, etc which fall under vocal’s mid range. But the window is very little, outside that every sound appears a little harsh. So good for classical music like violin sonatas, etc. with very few instruments in mix.

Good to Know:
1. Documentation says it wont work on IOS devices. But it can work on latest iPads with usb-c port and also on iPhones with non-apple adapter. Apple lightning to usb camera adapter doesn’t allow more power so it is not useful (Yes, Apple charges 3000 INR and wont work but other good adapters which cost less and works, I used Meenova lighting adapter which is around 1300 INR and very good.)
2. It gets warm while playing but on few occasions like hot pan.
3. Good on Macbooks, not on mobile phones. (I didn’t try on PC)

Many times I felt the in-built mac DAC and other dongle DACs are better than this one.
I have Helm-bolt, Sonata Tempo Tec HD Pro, ifi Zen DAC, FIIO BTR5. Never I worried about volume or equilizer issues on them. And they wont sound bad when there is a bad recording/mix, they try to make it musical to some extent.
I used Moondrop Aria, SoundMagic E80c, KZ ZAS, KZ ZSN Pro, KZ Zex Pro(CRN), Blon 03 IEMs with this DAC.
I checked with Samsung Galaxy M51, Poco F1, iPhone SE (2nd Gen), iPad Air with usb-c, M1 Macbook Pro.

People who have patience and dedicated interest in vocals (or limited mid range) can give it a try on Macbooks and can feel surprisingly good. Others can ignore this DAC.

Not suggested for beginers as the pain is more than the gain. Wont sound great or enjoyable out of the box. Better to wait for a revised version in future. (if any)

For beginers, I recommend Sonata Tempo Tec HD Pro as first DAC. It has CS chip signature, more musical (non slapping treble) than this one, costs half, works with any kind of music, no issues on mobile phones and also good with KZs IEMs. If the budget is around 1k then try VE Abigail. If budget is around 10k then try Hidiz S9 Pro.

I can understand adjusting EQ for IEMs but adjusting EQ for DAC is a no-no for me. A lot of time is wasted tuning it and to get the sweet spot.

Thanks, Headphonezone for helping me with the return, your exchange policy is especially useful in these kinds of cases. Without the return policy, I would be furious and have felt like cheated due to the hype and marketing around this DAC. On paper it's good with specs, and the images are gorgeous, but the important aspect of sound and usability is not at all good in my trial. (I tried to submit with “Verified Review” but got “Token Expired” message. Therefore poste...

Ashish Sam (Lucknow)
Design and Comfort:
Sound Quality:
Value for Money:
Bang On!
Not at all
One of the best portable dacs under 10k

The design of the dac looks futuristic and it has got a solid built quality. The sound is crisp and has a lot of details that you miss otherwise. In this era where phones have stopped coming with a 3.5mm headphone jack, this is the best thing you can get to listen to your favourite music. To get the most out of this dac I would suggest not using the usual android driver but instead buy an app called USB Audio Player Pro which integrates tidal and other apps inside it. This give a lot more detail and clarity. You can feel a big difference in terms of sound output, clarity and the wide soundstage.

Praveen Rajendran (Chennai)
Design and Comfort:
Sound Quality:
Value for Money:
Bang On!
Not at all
Excellent sound. Good value for money.

I've used a couple of USB dacs over the years and this one beats them all by a pretty good margin. The sound is slightly trebleish but I really mean slightly. It is clear, detailed and the bass especially is precise and not scattered if you know what I mean.

Build quality and design wise they get even more points than the sound quality. Extremely well built. You can feel the heft and solidness when holding it. The sharp angles on the metal body are a nice touch. The design and build really belies the price.

This also works on ipad pro with the usb c port. I noticed that the power envelope is different when using this on ipad/Android phone vs when using on PC. It seems to sound slightly better and can be driven to a higher volume when used with pc. The volume range was almost linear when using with PC but on mobile it wasnt. When on Android the volume is just adequate around the 65-70% mark but increases a lot past the 75% mark in a non linear way. Nothing uncomfortable but just a little quirk I noticed.

A A (New Delhi)
Sound Quality:
I don't hear a difference
Absolute game changer
Value for Money:
Not even close
Totally worth it
Not the best sounding, or most musical, but not bad if you have time to tweak your equalizer for ..

First things first - Don't expect wonders from this DAC for all your recordings. It can be a pleasure to listen to clean recordings - say Tool's Fear Innoculum. But songs like Rush's Afterimage or Riverside's Panic Room sound terrible - the lower mid range distortion is magnified and you have to spend some serious time tweaking the equalizer settings to suppress the distortion. Using USB Audio Player Pro, the bit perfect mode was disappointing. Basically, almost every album requires some Equalizer tweaks, so you spend way too much time optimizing the settings, as opposed to enjoying the music - which can be frustrating. For comparison purpose: the Sony NW - A105 DAP or the BluSound streamers sound warmer, and more musical. Overall, this is a pretty good DAC as long as play the right kind of music/recording, and are patient with it.
3.5 stars for the audio quality, 0.5 extra for the sturdy build and looks.

Thank you for the honest feedback & thanks for the awesome ratings. Cheers!