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PLEASE CHECK AVAILABILITY BEFORE CONFIRMING YOUR PURCHASE! Our stock can change any minute – we sell through various sales channels.Brand New! – Closed Box. We are authorised dealers of the finest audio gear and musical instruments.Note 1: Free shipping within EU. If outside EU, please message us for specific shipping price to your particular location. The price you see is only a generic estimation for “outside EU”.Note 2: This product is custom ordered, please check availability and/or eventual shipping delay.Note 3: We sell without taxes anywhere outside Europe and to valid VAT ID companies inside Europe. Please ask us your price without Tax in those cases.Note 4: for the 2ch version of this unit, please see our specific ad.Note 5: We can quote any kind of bundle with our products at the most convenient prices. Just ask for it.WEISS AUDIO DAC502 Mk2-4ch - DAC, AUDIO PROCESSOR, AND NETWORK RENDERERYOUR GATEWAY TO PERFECT SOUND REPRODUCTIONUnveil the true sound of the audio material with the compact DAC502 digital-to-analog converter. The DAC502 goes beyond simply reproducing your sound — it also lets you correct frequency imbalances in your room and adjust the sound to better suit your preference.MAIN FEATURESACCURATE AND ADJUSTABLEThe DAC502 is not only one of the best digital-to-analog converters available on the market today, offering an accurate and soulful presentation of the audio.It also includes user-configurable settings, from room EQ and de-essing to crosstalk cancellation, dynamics compensation, loudness control, and even vinyl emulation.HIGH CONNECTIVITYThe DAC502 comes with digital inputs in numerous formats and has both balanced and unbalanced analog outputs. All standard sampling frequencies up to 384 kHz plus DSD x64 and x128 are supported. Furthermore, the unit functions as a preamp, headphone amp, and streamer (UPnP/ROON).The DAC502 also seamlessly integrates with the JPLAY iOS app – you can enjoy your favorite tracks from Qobuz, Tidal, and your local collection, all in one unified library.There is also a two-channel version available, without “4ch” added to the model name. A standard two-channel unit can be upgraded to the 4ch version.For a description of the 4ch version, visit: weiss.ch/wp-content/uploads/2022/07/White-paper-on-the-DAC50x-4ch.pdfDAC502 PRODUCT COMPARISONThe DAC502 and its compact sibling DAC501 are identical, apart from the latter using a larger enclosure and an additional 4-pin headphone socket at the back of the unit. Both models are offered in aluminum or black finishes.The DAC502 includes all the audio processing features of the DSP502 — so one could view the latter unit as a DAC502 without the D/A conversion.PURIST SIGNAL PATHTo achieve its exceptional performance specifications, the DAC502 uses dual 32-bit D/A converter chips, with two conversion channels per audio channel.It also uses an internal high-precision/low jitter clock generator for ultra-stable clocking of the D/A converter section.PROFESSIONAL PROCESSINGThe built-in audio processing is based on the same trailblazing algorithms used in Weiss Engineering’s professional audio tools.So with the DAC502, you can adjust your audio using the same professional-grade algorithms that were likely used to mix and master the original recording.EASE OF USEThe DAC502 comes with an IR remote control which can be used to select the active input and output, the DSP audio processing presets, and switch power on and off.Furthermore, it is possible to control and configure the DAC502 via a web browser, which adds detailed control of the DSP processing and preset management.TECHNICAL DATADIGITAL INPUTSThere are a total of five inputsAES/EBU or S/PDIF via XLR, Toslink and RCA sockets.UPnP/DLNA via Ethernet.USB.Roon Ready.Accepted formats: PCM 44.1kHz up to 384 kHz, DSD 64x / 128x.Future formats can be accommodated via software updates.ANALOG OUTPUTSLine out unbalanced on RCA connector.Line out balanced on XLR connector.Headphone out on 1/4″ jackHeadphone out on 4-pin XLR connector.Discrete output stages for both line and headphone outputs are employed.The output levels can be set in a coarse manner with four steps to adapt for the amplifier or headphone connected. The levels can be set independently for line and headphone outputs.No sound degrading servo mechanisms are used.DIGITAL SIGNAL PROCESSINGThe DAC502 uses a built-in digital signal processing (DSP) chip for its audio processing. These algorithms are included:Room Equalizer – to suppress room modes for more accurate bass reproduction.Creative Equalizer – a tone control with low boost/cut, high boost/cut, and mid boost/cut. Very useful to correct those recordings which do not quite sound right.De-Essing – the automatic removal of overly bright sibilances from human voices. The sibilance effect can be more or less pronounced depending on your speakers or room acoustics.Constant Volume – adjusts the audio volume (loudness) to a constant value across all tracks played. Useful for “party mode” when the volume control should stay untouched.Vinyl Emulation – get that special sonic character of a record player based playback chain. We also employ an emulation of the DMM-CD procedure offered by the Stockfisch label.Crosstalk Cancelling (XTC) – for the playback of dummy head recordings or live recordings via speakers for an incredible live sensation. Dummy head recordings usually are listened to via headphones because they only work properly if the left channel goes to the left ear only and the right channel to the right ear only. With speakers this is difficult to achive as the left channel goes to the left and the right ear. But with some clever signal processing of the speaker channels is is possible to suppress the crosstalk, i.e. the audio going from the left speaker to the right ear and vice versa. If that works properly then the recording sounds as if one would be in the space where the recording has taken place. All the reverberation and 3D representation of the sound sources is there.(For speaker based playback only.)Loudness Control – a listening volume dependent equalization of the audio.Headphone Equalizer – to adapt any headphone to the listener’s ears in terms of frequency response.Crossfeed – to emulate a speaker based playback impression on headphones.FRONT PANEL CONTROLSA rotary encoder knob for changing parameters and for powering the unit on/off.A touch screen colour LCD display.An 1/4 inch headphone socket.An IR receiver.BACK PANEL ELEMENTSAnalog outputs on XLR and RCA connectors.Digital inputs on XLR, RCA, TOSLINK, USB, and Ethernet connectors.USB type-A connector for various applications.Mains connector with fuses.DIMENSIONSDAC502Depth: 30 cm / 11.8 inchesWidth: 45 cm / 17.7 inchesHeight: 6.6 cm / 2.6 inchesHeight with feet: 7.4 cm / 2.9 inchesIR Remote ControlDepth: 2.1 cm / 0.83 inchesWidth: 4.5 cm / 1.78 inchesHeight: 16.6 cm / 6.53 inchesPOWER SUPPLYA powerful non-switching power supply is used. All sensitive voltages have their own regulators which are separated between left and right channels. The result is an analog output free of “digital noise” and channel crosstalk.The power switch activates a semiconductor relay which only switches on or off at zero crossings of the mains voltage. This assures a glitch-free power switching. The two mains transformers are toroidal types.Mains voltage selection is done automatically by measuring the mains voltage before power is applied to the rest of the electronics.

Our Thoughts RADAR AI

At US$12,270, this listing sits just below the 75th percentile of US$10,098 from your ground-truth database, making it an ambitious but not outrageous price for a high-end Weiss DAC502 Mk2 4-channel unit, especially compared to new retail prices around US$12,995–US$14,990.

The Weiss DAC502 Mk2 is a top-tier audio processor and network renderer praised for its ultra-clean D/A conversion, support for sample rates up to 384 kHz, and flexible 4-channel DSP with balanced and unbalanced outputs. If this is a genuine new or original-owner unit with full accessories, it offers meaningful upside for audiophiles seeking precision, versatility, and rare 4-channel performance in a clean, well-loved package.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Weiss Engineeering

Weiss Engineering was founded in 1985 by Daniel Weiss in Switzerland, near Zürich, following his five years at Willi Studer AG where he pioneered digital audio innovations like sampling frequency converters and processors for recorders. A self-taught electronics enthusiast who built his own synthesizers, amplifiers, and even an electric violin in his youth, Weiss established the company to specialize in digital audio equipment for mastering studios, launching the modular 102 Series that remains relevant today at 24-bit/96 kHz. This heritage in professional signal processing laid the foundation for the brand's precision engineering ethos.

The company focuses on high-end digital audio components, excelling in digital-to-analog converters (DACs), CD transports, streaming devices, preamplifiers, and integrated amplifiers, all designed and manufactured in-house by a small team of eight. Early products like the Gambit Series—featuring standalone equalizers, dynamics processors, de-noisers, and converters with 40-bit floating-point processing—targeted mastering engineers, while the 2000 expansion into hi-fi introduced audiophile favorites such as the MEDEA DAC and Jason CD transport, now staples in discerning home systems worldwide.

Weiss Engineering occupies a niche boutique position at the pinnacle of the high-end hi-fi market, revered for its Swiss-made transparency, ergonomic excellence, and unmatched digital fidelity among knowledgeable audiophiles and professionals. Daniel Weiss's 2021 Technical Grammy Award underscores its authoritative status in digital audio, appealing to buyers seeking reference-grade performance over mass-market compromises.

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