Shopping Cart

Your cart is empty.

Your cart is empty.

K5 DAC Headphone Amplifier, ES9039Q2M Chip Digital-to-Analog Audio Converter, USB Type C/Optical/Coaxial to RCA/6.35MM/3.5MM AUX for Phone/MAC, RCA Input Converter for Home Audio Amplifier.

Free shipping on orders over $29.99

$69.99

$ 30 .99 $30.99

In Stock

About this item

  • Fully Balanced Desktop DAC and Amplifier: K5 stereo DAC headphone amplifier is perfect for your home audio system, K5 has 3 separate gain levels, each gain level having its own volume curve, Adopts traditional lever switch design, simple and practical, equivalent to an external sound card, suitable for Phone/PS5/Computers/TV/MAC/active speakers, etc.
  • Compatible with multiple input methods: K5 DAC converts USB Type C/Optical/Coaxial signals to 6.35/3.5MM AUX or RCA signals with low distortion and great dynamic range. RCA output can be connected to an amplifier or powered speakers on your desktop. 6.35MM AUX can drive 600Ω headphones. We also added an additional RCA interface input, compatible with most audio device such as phones, computers, tablets, TVs, PC, TV, CD players etc.
  • ES9039Q2M DAC decoding chip: This is the best beginner-friendly headphone amp you can buy for under $100, using the premium ESS chip - the ES9039Q2M with 32-bit processing. It features HyperStream IV Architecture promising efficient high-quality sound performance and ultra-low distortion and high SNR performance. The ES9039Q2M delivers a performance level that will satisfy the most demanding audiophile and pro-audio enthusiast.
  • Product Specifications: K5 supports high, medium and low 3 gain levels. {RCA Input sensitivity: 2V}; {USB、OPT、COA Input sensitivity: 0dBFS}; {Headphone matching impedance: 16-600Ω}; {Frequency response: 20Hz-20kHz(±0.5dB)}; {THD+N: 0.0004%}; {SNR ≥118dB}; {Supports the highest sampling rate: PCM 192KHz/32Bit}; {Working voltage: DC12V/≥1.5A}.
  • Driver-free mode for plug-and-play: The K5 used in USB DAC mode does not require a driver on Windows 10 and above systems.we also comes with a USB drive containing the installation of drivers for systems below win10. Driver is available to install for support of higher sampling rates. After-sales service our: our worry-free 24-month warranty, and friendly customer service.



Product Description

DAC Headphone Amplifier
Digital-to-Analog Audio Converter

6.35mm to 3.5mm adapter

6.35mm AUX (with 6.35mm to 3.5mm adapter)

ES9039Q2M DAC decoding chip

ESS ES9039Q2M DAC Chip

3 gain levels

3 Gain Gear

headphone DAC and amplifier
Headphone Amplifier

TECHNICAL SPECS

DAC Chip ESS ES9039Q2M
RCA Input Sensitivity 2V
USB、OPT、COA Input Sensitivity 0dBFS
Frequency Response 20Hz-20kHz (±0.5dB)
Highest Sampling Rate PCM 192KHz/32Bit
THD+N 0.0004%
SNR ≥118dB
Packing Weight 0.79kg

Frequently Asked Questions

Q1 Do I need to install driver software on my computer to use this amplifier?
If you are using a MAC or an operating system above Win10, you do not need to install additional driver software, just plug it in and use it. If it is a system below Win10, we will give you a USB flash drive that contains the driver software, which can be used after installation.
Q2 What accessories does this headphone amplifier include?
Includes the following accessories:6.35mm to 3.5mm Adapter x 1; Optical Cable x 1; USB-Type_C Cable x 1; USB Flash Drive x 1; 12V Power Cablex 1;
Q3 If I plug in the RCA output port and the headphone output port at the same time, how will the output signal be arranged?
The headphone signal be output first.
Q4 USB connection to the phone is not working, do you need a driver?
Mobile phone connection does not require a driver. It should be confirmed whether both the phone and the connection cable support OTG function. Some phones need to open the OTG option and set the output device in the settings.
Q5 Why is there no sound when using fiber optic or coaxial input?
To confirm whether the connected device, fiber optic or coaxial, is for output or input (such as connecting to a TV fiber optic output), it is necessary to set the output mode and sampling rate on the TV (usually with PCM output mode options).
Q6 Can fiber optic and coaxial signals be connected simultaneously?
No, only one can be selected between fiber optic input and coaxial input, and they cannot be connected simultaneously.
Q7 Why is the sound distorted?
Although this device is a DAC decoder, it also has an amplification function as a front-end product. If the volume of the back-end device is set to the maximum and the front-end is also set to the maximum, it is easy to distort. In this case, you only need to lower the volume of the front-end or back-end.

Deloris M.
2025-05-22 19:53:59
This is a very decent DAC/Headphone Amp. I do plan on purchasing another one because of the bargain price.First thing after arrival of my purchase, I opened it up for inspection right out of the box. Very nicely madeIt contains two upgradable NE5532 Opamps. I then put it back together. Then I listened to it in all it's modes. For the $59 asking price, it is a pure bargain. From my listening experience nothing wrong with the DAC, or the Opt, RCA, Coax. Everything seems quality inside and out. As an audiophile the sound is a little grainy. I got a gut feeling though that once I change out them Opamps with some real good ones. This thing will really sing!Update: I ended up buying 2 more of these headphone amps. Well worth the asking price.
motomech
2025-05-19 12:32:24
Arrived very fast, two days.Heavy, well built in a solid metal case. Nice volume control, clicky, but a little course. Slick plastic knob that I don't care much for. The 3 level gain switch works, low is fine for my amp and high overloads the amp pretty quickly. Overall, it has a solid quality feel.I swapped it in for my Sanskrit Mk.ll in my desktop system and my first impression is that it's very neutral. Dead quiet, nothing seems amiss, but at the same time nothing stands out.Will it replace the SMSL? I don't think so, It doesn't have the sparkle and envelopment that the Sanskrit has when playing music. On the other hand, it nicely rounds off the edges of spoken dialoge with something like a newscast on You Tube. Maybe a little less "chestyness" with male voices as well.All in all, like my Topping D30 ll Lite, a comfortable sound that calms down slightly edgy speakers like my Aviatrix (Aviatrices?) pair.But doesn't have that bit of excitement the SMSL Sanskrit has.Still, for someone, for who music isn't #1 priority and is looking for a manual volume control and doesn't care about bluetooth or a remote, this device would be hard to beat.
Shane Cutting
2025-03-12 14:31:15
Around Thanksgiving, my Schiit Magni Amplifier died leaving me without an audio interface. When looking at replacements, this option came up in my feed. While I did not have high expectations, I thought I would give it a try and placed the order. Boy am I glad I did! This compact Amp/DAC combo is far better than I could have anticipated. I was surprised by this device in every aspect from build to sound quality. If you are looking for a simple HiFi solution, then this challenges the best of them in the $100-300 range.Out of the box, you are provided with everything you need. The Amp/DAC which has a good amount of heft and density to it, a power cable, USB C cable, USB Stick, and Optical and digital COAX cables.Setup of the device was easy! Just plug the USB into your computer and connect your RCA output and you're off. A feature I liked on my previous device that carried over was the auto switch from speakers to headphones whenever a headphone was plugged in.The sound quality of this Amp/DAC combo is excellent! I'm not sure if it is the components used or the implementation, but this device sounds incredible. Far better than my previous stack. Everything came through crystal clear and full. I have several higher end stacks, and this compact combo hangs with the best of them.If I try to nitpick, the only thing I can complain about is the lack of a balanced option, but the setup is so clean that I can easily overlook this. Gain stages are not large, but do provide a little more oomf when needed. I was easily able to drive 300 Ohm headphones on the upper end of gain 1, or middle of gain 2. The Amp/DAC easily powered all of my headphones without even a struggle.Overall, I love this interface! It is a simple and compact solution that vastly improves the audio experience coming out of your PC. The addition of an AUX in allows for even greater functionality. If you're looking for a quality audio solution that provides an excellent value, then look no further.
John
2024-12-13 10:46:57
Basically, I ordered this to drive a vintage pair of AKG K240 600 omh studio headphones made in Austria. They are power-hungry and at the listed max end of this units 16-600 ohm range. That's significant, because if you check a lot of the headphone amps on Amazon, many top-out well below the 600 ohms of this unit. Tried the AKGs connected directly to my phone (OnePlus 12R) and it drove them, but at a medium-low volume level: loud enough for background type listening in a quiet room, but not with the punch and dynamics I'd like. Then I connected the phone to this K5 DAC/Amplifier and the result was much better. I could actually drive the AKGs to a point that was realistically too loud. I have other more efficient headphones, but I wanted to be able to utilize the K240s. The unit has a premium look and all the switches and volume dial are smooth and solid. It comes with a cable for USB connectivity, although please note it's USB-C on one end, USB-A on the other. Fortunately I had a cable with USB-C on both ends, although if one were included that would be nice. I plan to connect a Bluetooth receiver (when I can remember where I put it) to the RCA inputs so I can connect a phone, laptop or tablet easily. I'm able to use the headphones and it sounds great - very pleased!