PS Audio DirectStream DAC MK2


Since its groundbreaking introduction 8 years ago, the PerfectWave DirectStream has stood alone as one of the most remarkable DACs ever built.

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DirectStream DAC MK2

DirectStream DAC MK2 Silver
For the past 8 years, the PerfectWave DirectStream DAC has been recognised throughout the world as a reference standard.
PS Audio are proud to introduce its successor, the PerfectWave DirectStream DAC MK2.

Since its groundbreaking introduction 8 years ago, the PerfectWave DirectStream has stood alone as one of the most remarkable DACs ever built.

We are excited to share with the world the next generation of this technological wonder, the PerfectWave DirectStream DAC MK2.

Unlike the vast majority of high-end DACs based on off-the-shelf IC technology, DirectStream MK2 utilises user-upgradeable software based on handwritten FPGA code.

At its core, the MK2 utilises discrete, galvanically isolated, perfection-based conversion that uncovers all the missing information hiding in your digital audio media.

CDs, streaming audio, high-resolution PCM or DSD based media are expertly upsampled in the DirectStream MK2 to twenty times DSD rate and output as pure analogue directly into your amplifier or preamplifier.

There has never been a better sounding DAC at anywhere close to the price of DirectStream MK2.

The ground breaking DirectStream DAC was the first choice of thousands of critical listeners worldwide, and now with the introduction of the MK2, that legacy will continue.

Galvanic Isolation

The Class A+ Stereophile rated DirectStream DAC just got a whole better in the MK2 version by solving one of the biggest problems in digital audio: noise and jitter from incoming sources.

Thanks to a radical new technology the DirectStream MK2 DAC eliminates incoming noise and upsetting jitter by galvanically isolating every input, output, ground, and power source of this remarkable new DAC.

Whatever the format, sample rate, or the medium, the DirectStream MK2 provides a pure output that fulfills the promise of high-resolution analog performance from digital sources.

DirectStream MK2 is the work of PS Audio’s digital audio guru, Ted Smith.

DSD to Analogue

DirectStream DAC MK2

Converting the ones and zeros of digital audio into music we cannot distinguish between live or recorded is an art.

Most of today’s sophisticated DACs are IC based instruments using off-the-shelf-chips that rely upon Multi-bit Sigma-Delta functions to process the incoming digital audio.

While these are relatively simple to design and produce, they rarely give the best sonic results.

DirectStream MK2 takes a different approach by first converting all galvanically isolated digital audio signals into a purer form of digital audio known as DSD.

DSD is a far more analogue-like encoding and decoding process than the classic CD based PCM.

In fact, most modern A/D converters used to make recordings are DSD based already.

The DirectStream MK2 takes both PCM and DSD, upsamples the data and converts to single-bit DSD and then outputs pure music regardless of input format for the data.

The results of this design can be heard in increased musical information presented to the listener at every opportunity.

When you listen to the DirectStream MK2 you never are accosted by added bright, hard glare in the music as happens with many active designs.

Instead, clean, pure musical magic flows from the DirectStream MK2 directly to your amplification choice.

Output and Volume

PS Audio Audio Venue

Most modern DACs use some form of active tube or solid state output stage to amplify, filter and drive the DAC’s output.

The DirectStream MK2 takes a different approach: passive.

In one of the simplest, elegant and musically correct executions of an output stage, high-speed class A video amplifiers are used as the final switch feeding a high-performance passive audio output transformer.

The upgraded output transformer in the MK2 is specially designed to act as both the final galvanic isolation between the DAC and the outside world as well as the primary low pass filter required to present a perfect, low distortion, low noise output signal that is fed directly into the DirectStream MK2’s zero-loss volume control.

Designer Smith perfected a 100% bit-perfect volume and balance control that’s built into DirectStream MK2, enabling users to control the output level when feeding directly into a power amplifier or preamplifier.

The ability to eliminate the preamplifier in the system without any resolution loss is a major benefit to DirectStream MK2’s outstanding musical performance.

Imagine going to a recording studio and listening to a master tape of any recording made.

This is the experience the DirectStream MK2 provides its owners who enjoy a renewed sense of enjoyment and discovery when listening to everything in their library: CD’s, downloads, DSD.

Specifications: DirectStream DAC MK2

Specifications: DirectStream DAC MK2


Unit Weight 21 lbs [9.53 kg]
Unit Dimensions 14” x 17” x 4” [ 36cm x 43cm x 10cm]
Shipping Weight 30 lbs [13.6 kg]
Shipping Dimensions 20.5”x 24” x 10” [52cm x 61cm x 25cm]

Power requirements

Input Power Model specific 100VAC, 120VAC, or 230VAC 50 or 60Hz
Power Consumption 25W

Digital audio inputs

I2S (2), Coax, XLR Balanced (2), Optical, USB

Sample Rates

Optical (TOSLink): PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz and 96kHzS/PDIF (Coax and XLR): PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz and 192kHz

DoP64 Dual XLR: PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz and 352.8kHz

DoP64 and DoP128 I2S: PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, and 705.6

DoP64, DoP128, DoP256, DSD64, DSD128, and DSD256 USB: PCM 16 and 24 bits at 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, and 705.6, DoP64, DoP128, DoP256, DSD64, DSD128, and DSD256

DirectStream DAC MK2 Angled

Additional information


Black, Silver


PS Audio

PS Audio is now based in beautiful Boulder Colorado, with engineering, sales, marketing, production and administration facilities nestled up against the beautiful Rocky Mountains. Their company is still family owned and operated, a tradition they are proud of. Products are engineered in-house from the ground up using some of the most sophisticated design and evaluation tools available. They are strong proponents of utilising the latest technologies in service of building state-of-the-art high value music products for our customers. Their core products are all hand built to investment level standards in their modern production facilities in Boulder Colorado. They are a proud employer of more than 30 local artisans who design, build and make their products available all over the world. From their family to yours, let’s keep the spirit of great music and performances alive and well. If you’re in the neighborhood, come by and visit!

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