Deze producten uit Sofia, Bulgarije stralen kwaliteit uit met een ongekende muzikaliteit. Na jarenlang met topmerken gewerkt te hebben zocht Rumen Artarski naar een manier om de voor hem ultieme voorversterker te maken. Langzaam maar zeker groeide het THRAX gamma tot een complete lijn.

Deze apparatuur richt zich naar klanten voor wie enkel het beste goed genoeg is, zonder exhuberante prijzen. 

THRAX Audio haalt zijn inspiratie bij de grootmeesters van de Japanse huizenversterkers. Door innovatie en hun streven naar eenvoud en muzikale magie met technologische spitstechnologie brengen deze pareltjes u dichter bij de muziek.

Op afspraak kan u met deze juweeltjes kennis maken…. een onvergetelijke gebeurtenis.

Contacteer Harry en Michel van Rhapsody in Hilversum, of als je in de buurt van Antwerpen woont… bij ons na afspraak.

It is all out there, you just have to put it together

Thrax Philosphy


Thrax Heros



Heros is a very unusual hybrid amplifier marrying old concepts with the latest technology.

Heros is like no other amplifier ever made as it has a single differential DC coupled FET/Tube stage working like a single
super tube. This DC coupled cell is loaded by a low impedance push-pull transformer helping improve the efficiency to almost
double that of a normal Solid State Class A designs. The output transformer blocks DC on the output and presents
many other benefits by isolating EMI/RFI, scaling down the output voltage (reducing residual noise) and protecting the output from
any power supply noise by canceling it by the nature of its differential operation.

Тo guarantee a fully differential architecture we split the phase with the input transformer and sum it back up
with the push-pull output transformer. This solution completely floats the the gain cell between the two
transformers isolating it from any external influences making Heros immune to the influences of its environment.

The power supply uses high voltage Silicon Carbide diodes followed by a filter choke preventing any switching noise from
reaching the output stage. The result is an amplifier free of grain and fizziness or screaming intermodulation, giving new
meaning to transparency and tone density. We use our beloved 6N6P as the base for the proprietary DC gain cell,
a recognised audiophile performance tube. To keep all at this level we chose a silver wire permalloy input transformer and
the highest grade custom toroidal output and power transformers. 

Operating all devices in class ‘A’ produces a fair amount of heat, so to handle that the Heros’ chassis itself is a heat sink.

It is still the most compact 100-watt class A solid state amplifier available today.The chassis is designed not only to cope with the
heat produced by the components but to provide a vibration-free structure to house them. Heros shares it’s chassis design with
our other hybrid power amplifiers – Teres, but all similarity ends there.  Heros can handle any speaker giving it a new voice.


Thrax Teres



Teres achieves the unmistakable clarity and tone of tubes delivering it with might and power.

Single-ended tube input stage loaded with a phase splitting transformer controlling 2 separate out of phase single-ended amplifiers for output. The tube handles all the voltage gain needed. It uses a new generation of our choke-rectified shunt-regulated power supply providing a noise-free operating point, clear tone and unbelievable dynamics.

The output stage’s power JFET cascodes form a bridge that when unbalanced by the input signal via the 2 transformer windings restores balance by adjusting their current conduction through the load. The 2 output stages actually enclose the load in their control loops and try to correct each-others errors reducing the distortion to insignificant amounts, leaving the “character” of the input stage untouched. Those provide no signal gain, they merely satisfy the load’s hunger for current.

To reduce the amount of heat generated the amplifier is biased so only the first few watts are in true class A. Music has a crest factor of 10 on average. This means that most of the time we listen at 1/10th of the peak levels. For most users this translates to under 5W. Peaks can reach over 100 watts during playback, but only for a few milliseconds. For those peaks the amplifier switches to class B using only one leg of the output stage capable to deliver up to 250W/8ohm and 350W/4ohm  Not sharing a common reference point apart from the load itself makes the second output stage correct for any error produced by the first one.
The result is an amplifier capable of extreme power while delivering exquisite smoothness and low-level resolution.

The driver stage is isolated by the interstage transformer and is not influenced in any way by the output stage maintaining tone, colour and resolution at all power levels and loads. Having the output stages floating around the load prompted for the use of a unique biasing technique powered by solar cells. This was the quietest galvanic isolated power we could come up with. Using opto-electrical conversion we control the bias by adjusting light intensity in the control circuit. Teres is an example of modern technology solving age-old problems allowing us to go a step beyond what was possible before. The physical appearance of Teres has the kind of understated elegance typical for Thrax.
The exquisite aluminum finish adds to the presentation of a solid block of metal.


Thrax ARES



A single chassis audiophile system with the sound you want and the features you need.
ARES is not just an integrated amplifier with digital inputs.
It is a complete solution for your home audio needs, just add speakers.

With Analog replay growing in popularity the addition our new RIAA module to the input board converts the first RCA input to a Moving Magnet and Moving Coil phono stage. This module once in place adds gain and loading settings to the configuration menu. The RIAA board has it’s own dedicated analog power supply making it absolutely independent. Pretty much like a stand alone phono preamplifier but sharing the same case and user interface.

Our Digital input board accommodating all modern digital interfaces. AES, SPDIF, Toslink, USB, Ethernet and Bluethoot inputs. This input module apart from switching the inputs has the ability to apply different filters and upsampling to supply the DACs always with the optimal data rate and format making it the truly universal digital input module. All data is re-clocked to the high precision internal clock generator.

The DAC module is a simplified version of our multi-bit R2R module developed for the Maximinus DAC offering similar tonal rendition and lifelike dynamics. It is realized as a separate card allowing upgrades when new technologies become available. The integrated network player board supports DLNA, Roon, TIDAL (including MQA) and DSD and is upgradable on it’s own. There are separate power supplies to power the digital and analog circuits independent from each other and the power amplifiers. So you get a multi-bit DAC, an Up-sampler, a Network player, a Phono preamplifier and two mono power amplifiers in a single box. Each designed to work with the other in the most optimal way. Getting rid of cables multiple remotes and boxes scattered across the room.

The modularity of the system let’s you grow as you need and to keep it current for long time to come..