Heed Audio Obelisk Si III Integrated Amplifier

Heed Obelisk Si mkIII  Integrated Amplifier

The evergreen presenters of the classic Heed atmosphere. Thick and warm and real, like a thunderous concert.

You may order the Obelisk Si III with optional DAC module or Phono module.

There was a neat shoebox amplifier in the 1980’s which stirred emotions in unsuspecting hifi-freaks and music lovers alike. Sadly, the unbashedly different design of the original Ion Obelisk had become entirely forgotten. Well, almost entirely.

FEATURES

After two decades of silence, we have resurrected this legendary integrated, updating its exterior aesthetics and internal components. More importantly, however, we challenged ourselves with the demanding task of preserving the classic Obelisk’s absorbing delivery and infectious musicality, while offering even greater transparency, leading-edge detail and more gripping dynamics. Mission accomplished – the Obelisk Si has become a must-hear sensation straight out of the gate.

During the years of evolution, the Obelisk Si showed us the nature of RC-coupled amplifiers. By the designing of the current version of this amp, we have found the solution that describes the magic it creates. Transcap technology is now our main path, which we intend to follow, unaccompanied in the world.

The Obelisk Si III rated at a great healthy 50 watts per channel. Don’t be fooled by the kilowatt amps, this fifty is like a valve-amp fifty. And more, as a Transcap amplifier is rather different in this aspect. With this kind of power the Si is capable of astonishing dynamic authority and massive transients any time. Further on, there are the X2 or X4 power supplies, which converts the Si-system into a preamp/power amp combo with dual mono power amplifiers. Now that’s something classy!

To be more versatile, we have worked out an upgrade card system for some of our devices. The first input of the Si can be transformed into an MM phono input or an S/PDIF digital input via our upgrade cards. If you don’t like the many and more little boxes around you, this highly integrated system is your saviour.

SPECIFICATIONS

Heed Audio at a glance

Heed Audio is not just another hi-fi electronics manufacturer with British audio heritage in its DNA — it is a manifesto of authenticity, passion, and independent vision. Founded in Hungary, the brand stands out for its radically human approach to sound reproduction. In a market so often dominated by numbers, measurements, and technological catchphrases, Heed chooses a different path: that of the listening experience as an absolute value.

Every Heed product is designed to serve the music, not the machine. The amplifiers, DACs, and external power supplies are built according to a philosophy that places musicality, tonal coherence, and natural soundstaging at the very centre. There are no gimmicks — just tonal integrity and emotional balance that recall the finest British electronics of the golden era, reimagined with elegance, craftsmanship, and a modern spirit.

And that’s exactly where it all began — with one defining example:

In the 1980s, those who brought home an ION Obelisk experienced something rare and precious: the feeling of having discovered one of hi-fi’s best-kept secrets. It wasn’t a flashy amplifier, nor did it shout its specifications. But from the very first listen, many enthusiasts realised that something extraordinarily musical was happening.

Here’s what it felt like:

• A sense of wonder: at how such a compact device could drive even demanding speakers with such ease and refinement.

• Emotion: because the Obelisk didn’t impress through brute power, but through its ability to tell the story of music — with fluidity, dynamic range, and a sense of timing reminiscent of valve amplifiers.

• Deep satisfaction: the kind that comes from extended listening sessions, free of fatigue, drawn into a sound that keeps you there.

• A sense of uniqueness: because owning an Obelisk meant making a choice that went against the grain — a commitment to musical substance over passing trends.

In short, those who welcomed such a device into their home discovered an amplifier that didn’t try to dazzle with figures or appearance, but that won them over gradually, listen after listen, by speaking directly to the heart.

And on this front, Heed Audio makes no compromises. It doesn’t follow fashion. It’s not made for everyone. But those who discover it rarely look back. Because listening with Heed isn’t about technical showmanship — it’s about returning to music as a deep, living, and emotionally resonant experience.

If you’re seeking the soul of sound, Heed is a name worthy of your attention — and your respect.