Heed Audio Thesis

It is far from us to lose you in technical terms.

It is not our aim to teach you our profession or to provide you with numbers that are merely different from other devices. Electronic specifications and “correctness” are just one aspect and not enough to create perfect music reproduction alone.

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Alpha

The thesis α (alpha) preamplifier sports two analogue and four digital inputs including S/PDIF, TOSLINK, BNC and USB.

All inputs, as well as volume setting with muting function are remote-controllable via our new RC handset. A twin capacitor-coupled output stage caters for driving long cables and connecting two sets of power amplifiers to drive speakers in bi-amp configuration. The analogue section of the thesis α is fed by the thesis π twin PSU which can also supply the φ phono stage with power simultaneously.

The thesis α (alpha) preamplifier sports two analogue and four digital inputs including S/PDIF, TOSLINK, BNC and USB. All inputs, as well as volume setting with muting function are remote-controllable via our new RC handset. A twin capacitor-coupled output stage caters for driving long cables and connecting two sets of power amplifiers to drive speakers in bi-amp configuration. The analogue section of the thesis α is fed by the thesis π twin PSU which can also supply the φ phono stage with power simultaneously.

Omega

The thesis ω (omega) monobloc power amplifier is an AC-coupled device in true Heed fashion that drives loudspeakers in a similar way to valve power amplifiers, but without their inherent problems related to the vacuum tube.

Despite certain topological similarities to its valve counterparts, the thesis ω is best described as a quintessentially solid-state power amp that successfully gets around the often sterile, lifeless sound of most solid-state devices. We believe that connecting amplifiers to speakers by AC- instead of the prevalent DC-coupling results in amuch more natural, less “cropped” decay of tones. Freed from the cost containments of the Obelisk power amplifiers, we could achieve a no-compromise implementation of this topology in the thesis ω. 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 160W or capability of driving loads down to 1.6 Ohm speak for themselves. It is capable of driving all kind of speakers except those with very low efficiency.

Pi

The thesis π (pi) twin power supply can feed the α and φ preamplifiers simultaneously.

It has two independent sections, each with dual regulated power supply rails. In order to ensure an absolutely clean and stable power delivery, the thesis π uses high-grade components custom made by Airlink and Mundorf to our specifications, all massively overspecified for smooth and effortless performance even when pushed to its limits

Gamma

The Thesis γ (gamma) stereo power amplifier is the most athletic member of the family.

With great effort, we have succeeded to squeeze two Thesis-class Transcap module into one rather tiny, but chunky metal chassis. Its wall-to-wall transistor array supplies tremendous energy for two channels of music, without the slightest feeling of necessity.

For being a Transcap-technology stereo power amplifier, the Thesis γ has an extermely good overall transient response. The percussion instruments sound vividly and life-like, providing the essential base of music. 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.

  • Transcap – output capacitor technology for unique musical abilities
  • Massive power delivery up to 2×110 Watts
  • Excellent impedance handling down to 1.6 Ohms
  • Oversized components and solid design for reliability

Lambda

The Thesis λ (lambda) is a preamplifier for the analogue-blooded fans.

You can choose between five of your analogue sources and adjust the volume with an RC handset, but that is all you can get from the digital world by this clean-cut preamp. On the analogue side, however, it is the most refined preamplifier ever built by Heed.

The amplifier circuit of the Thesis λ is the pure version of the Thesis α’s analogue section. With the lack of digital circuitry, there is no reason to compromise anything. Aiming for the best possible sound quality, the Thesis λ offers an unexceptional PCB design, unique to our Thesis line preamplifiers.

In a standalone mode, it is a very robust and capable device with its sturdy internal power supply. There is, however, an option to upgrade this remarkable performance to an even more astonishing level. The Thesis π external power supply adds more clarity, more accuracy and a great bunch of smoothness to the presentation.

  • 5 analogue inputs
  • Upgradeable analogue power supply (see Thesis Pi)
  • Fully remote controllable

Envoy

If Heed were a pure electronics manufacturer, our thesis would end here.

We are, however, designersand manufacturers of all-encompassing audioequipment. Just like our Obelisk/Enigma concept,the thesis also consists of electronics and loudspeakers.These are bound together in a synergicentity in which the speakers play a pivotal role. So let us introduce you to our second “enigmaticchallenger”, the envoy of thesis.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. It is a dual TMR (transmissionline-reflex) 2.5-way non-directional speaker that improves onthe Enigma in almost all respects. By using two 6.5 inch drivers in two separate quarter-wave TMR chambers, the envoy performs an exceptionallydeep, voluminous and dynamic bass response, while its state-of-the-art tweeter not only preserves the Enigma’s uniquely open and holographic midupper range but makes it even more detailed, transparent and tangible. A breathtakingly realistic reproduction of music in all its facets, spaciousness and immediacy that casts a spell over the listener.