Switzerland’s Weiss Engineering is renowned for its no compromise approach to gear for professional mastering studios around the world.

For years Weiss has been at the forefront of digital engineering, and each generation of its products has raised the bar even further. The new HELIOS digital-to-analogue converter is the company’s latest high-end Hi-Fi flagship product.

At first look, the case work and the back panel seem to closely resemble the DAC502. But the HELIOS chassis is considerably more substantial – it’s a double chassis design with a stainless-steel frame inside the thick aluminum panelled outer chassis. It’s very solid when you rap it with your knuckles, and also ensures that EMI and RFI intrusion is reduced. Inside, the HELIOS has a different D/A converter than the DAC502 and a much better analog output section. And as you likely know, the quality and integrity of the clocking and the analog output stage is perhaps as important to the sound quality as the actual D/A processing method itself.

The HELIOS is beautifully balanced across all frequencies and with all genres of music. And it has the ability to bring out the tiniest micro detail imaginable – it has by far the best detail retrieval I have ever heard. Its retrieval of depth in recordings and its layering of the sound stage are also by far the best I have ever heard.

Weiss says the HELIOS brings you studio quality sound. Some audiophiles might infer from that that it’s analytical sounding. Yes, it is analytical, but certainly not to the point of being clinical, hard sounding or intrusive into the music. It’s just extremely clean, resolving, transparent and natural sounding. It allows the recording itself to provide resolution, depth, warmth, dynamics – the HELIOS simply becomes the conduit to allow that music to flow. It doesn’t add its own signature. Just what you’d expect studio equipment to do.

I didn’t think I was possibly in the market for a new DAC, until I heard the new HELIOS. And that’s why it’s now my reference Swiss Army knife solution digital-to-analogue converter. That is the best recommendation I can provide.

Tom Waters, Soundstage Australia, October 2023