The extremely low signal level and the frequency-related amplification which arises from the RIAA equalisation curve applied in the cutting of LPs make the highest demands of the circuit topology and technical realisation of a phono preamplifier. At that time we met Richard Hay, the legendary designer of Nytech, and later Ion Systems products, and this acquaintance proved to be very important in our activities. Compact and minimalist it might be, but this quartet of preamp, power supply and twin monoblocks is not short of heft. Cartridge matching is customisable for gain and impedance on the rear panel of the unit by jumpers. But perhaps the most distinguishing characteristic of the Obelisk Si, in any configuration, lies in its inherent and exceptional musicality. Choose from these finance options: At first glance, they physically resemble the Pulsar, our previousentry-level MM phono stage, but looks can be deceiving.

With its very generously sized power supply, unlike valve amplifiers, it is also extremely stable even into the most difficult loads — continuous power delivery up to W or capability of driving loads down to 1. Greater transparency is a must, as is a subtler attitude. For Cohesive and organised presentation Rhythmically surefooted Good attack. We genuinely believe that we are amongst them. But at this price we expect more.

In an audio market comprised of DACs-galore with dedicated transports thin-on-the-ground, it is understandable how one might be skeptical of the significance of CD audio transports, and convinced that D-to-A conversion alone is responsible for superior digital performance.

We also sell on. But above all, it managed to render recorded music, well, disarmingly musical. It is a perfect match for the Obelisk PRE. Naturally it is impossible to make a musical impression by words alone. The success of the Orbit led us to develop further products: No-one likes to think of themselves as dumb or a fool and everyone hates to be patronised.


The output stage has huge headroom at extremely low noise levels and, due to its low output impedance and high current delivery, can drive long interconnect cables without any sonic degradation.

It is much closer to the “live” magic of a reference-quality B than it really has any right to.

Heed Audio Thesis Phi MM/MC Phonostage

Whilst Ion’s famous amplifier, the Obelisk, found a thessi life in our Heed Obelisk Pro, a new amp concept was also elaborated and realized alongside that. Quasar, an all-in-one hi-fi system from Leema 19th February Available in a black casing with aluminium fascia.

For even a fleeting experience with the real world is better than thousand words in hi-fi, do try and meet the Obelisk wherever you can — trade shows, Heed Audio dealers, happy Obelisk owners.

All inputs, as well as volume setting with muting function are remote-controllable via an RC handset. While all other instruments and vocals brillare in their place, together they create a concert-like atmosphere, where you can feel the wink of the musicans when they make an upbeat of a new measure.

In a standalone mode, it is a very robust and capable device with its sturdy internal power supply. The PX is based on a sophisticated fully-regulated, double-filtered circuit topology, which eliminates interference caused by the mains supply, providing the cleanest possible current to the PRE.

Amplificatore Mono a stato solido.

heed audio thesis phi

Don’t be fooled by the PM’s deceptively modest power specification — 70W into 8 ohm, W into 4 ohm — as it hardly says anything about the real capability of this unit — a stable W delivery down audi 1 ohm! The Obelisk was something unabashedly different.


These are bound together in a synergicentity in which the speakers play a pivotal role.

HEED AUDIO THESIS PHI phono stage incl. THESIS PI power supply

Hence, the balance of the sonic frequencies remained, allowing the upper mids to remain open and informative. The two separate outputs with different sensitivities make it possible for preamps or recorders to be fed via audip Out’, whilst its ‘High Out’ can drive power amps directly. And this before we even get to the sound quality or even the aesthetics. Conventional speaker systems, phii, cannot faithfully recreate music as we hear it in a live setting.

Heed Audio – Thesis line

A deceptively simple module with excellent musical qualities, the Dactil 1. Cartridge matching is highly customisable for gain and impedance on the rear panel of the unit by jumpers. Dimensions W x H x D: Regrettably, even many outboard amplifiers resort to this simple – and cheap – solution, making it phl for headphones to perform at their best.

Yes, I know that manufacturers want to stand out and I encourage that.

heed audio thesis phi

Amplificatore in classe “A” per cuffie: It is capable of driving all kind of sensible speakers. The CanAmp is a two-stage amplifier. It is a substantial technical upgrade, and consequently a leap forward in sonic performance: Following our non-directional speaker concept thatfirst jelled in the Enigma, we have turned over a newleaf and created the envoy, a bigger enigma— literally.