Soulution 540 digital player


ReMusic Spark Award

The Swiss Soulution introduces itself as interpreter of the radical hi-end philosophy. Its intent is scaling and reaching the top of the international audio quality.

In very few years this brand has succeeded in making a name for itself in the hi-fi world, gaining - I must say with full merit - the respect and consideration of the international critics thanks to its challenging devices: challenging for costs and dimensions, still with amazing performances.

The Italian importer has provided us with a complete chain of Soulution Audio’s devices. An absolute reference in the room that currently hosts our most valuable audio machines: the room of our friend Marcello.

The Soulution Audio mega system comprises the 540 digital player, the 721 preamp and the 710 power amp. The loudspeakers are a pair of Acapella Campanile, interchanged with a pair of high rank prototypes.


I would like to start the series of reviews about the Soulution products with the 540 digital source. A device that pertains to the Series 5, the economic one, so to speak… The top series holds the “7” digit and differentiates itself not only for better performances (obviously) but for a wider chassis.


The Soulution 540 Digital Player is a CD/SACD that employs the prestigious VRDS Esoteric VOSP transport, which has been laid down and firmly screwed upon two massive aluminium bricks. I agree on the choice of a rigid chassis for the transport, because I have always noticed some tonal inconsistencies in the sonic response of transports elastically damped. An exception is a very elastic typology that vibrates at frequencies in audio band. I know it could sound a bit strange, mostly if said by who, like me, strives to push down - out of the audible range - the resonances of the tonearm-cartridge system. Oh God! Now all the forumists go wild to slaughter me!

The 540 costs around twenty thousand euro and it is a 24 bit/192 KHz integrated CD player that employs Burr-Brown PCM 1792, 24 bit/384 KHz, with DSP conversion.

The analogue outputs available are balanced XLR and unbalanced RCA. The digital outputs comprise AES/EBU (XLR), SPDIF (RCA), Toslink (Optical). The inputs are USB, Toslink, AES/EBU and SPDIF.

The 540 has its own digital volume control and could be linked directly to the power amp without passing through the preamp. Nevertheless, I have not used the digital volume control during the listening test.

The design is hi-tech. Its smooth and rounded silhouette has been obtained out of a thick and heavy satin aluminium folded sheet.

To the sober style of the machine, contribute also the large display with red digits, the three small service buttons, the multifunction controller knob and the narrow tray of the transport.

It has not been easy to open the chassis and taking some pictures inside. For that reason, I suggest to ask an expert in order to avoid scratching it irreparably.


We have connected the audio chain in full balanced way, a Hobson’s choice to exploit the great sound qualities of the system. Actually, a test with the unbalanced link-up has made me feel some disappointment and I have preferred to move back to the balanced connection.

I cannot resist. I will tell you right now. This has been one of the most exciting, pleasant and satisfying listening test of the last years. A sound that reproduces an event with live connotations but that can be extended for hours without any fatigue or nuisance.

The 540 struck me. An amazing machine that I can easily define as the trait-d’union between the analogue and the digital domain. Notwithstanding the digitalists do not welcome enthusiastically the DSP conversion - and so do I – the Soulution 540 has persuaded me thanks to its sound features that are very close to the analogue sound. Personally, I cannot say if this depends or not on the DSP conversion.


I have inserted the 540 in a top context starting from the listening room: a beautiful room (6 mx8m), with a medium acoustic treatment utilized by ReMusic to test important and huge loudspeakers.

I start the listening test with classical music. The recordings leave no doubts although they do not take care of the artistic quality. Here then the Carmen Habanera Fantasia by FIM records. With this track you can understand from the very beginning how much quality the Soulution can produce: the orchestra assumes a scenic composure of great balance. The soundstage is natural and three-dimensionally very wide, surely helped by the pair of Acapella Campanile loudspeakers, which can offer a solid and homogenous image, so that by changing the listening spot the stability of the sound framework does not change. Carry out this experiment: stand on your ideal listening spot and then walk parallel to the loudspeakers. If while walking you can hear the loudspeaker, which is closer to you, then the quality of the image is not that great. If instead the image stays stable and firm even if you are out of axis in respect to the loudspeakers, then the reproduced image has a great quality proportionally to the grade of stability of the image itself.

The performances here are on top levels so it seems quite reductive speaking of frequency response or dynamics without real measurements. Therefore, you have to add a quid to these outstanding performances. For example, the frequency spectrum - which is very wide since the band extremes are very distant - can express itself with extreme confidence, as the fact of reaching the deepest bass range is the simplest thing in the world. The dynamics has an impressive sound pressure, while the pleasure of listening remains very high considering the absence of any performing effort or tonal hardening. And now, I am sure, you want to know how the Soulution performs in the most important parameter for a digital source: tone and transparency.

No wonder if I have spoken of something very close to the analogue sound. A liquid and bodied sound, no grain and thus a limpid and clean sound expressed with great plasticity and with round and precise musical articulations. The detail, also that barely audible, has a presence and a microdynamics that leave you appalled.

I have made a direct comparison with the Moon Andromeda RS that I consider one of the best digital sources on the market nowadays. A real battle royal! The winner is the Soulution 540 because it gets a more natural sound, with no grain. Unbelievable.

Astonishing is the female voice of Jacintha in the CD The Girl From Bossanova. The 540 seconds the features of the loudspeakers and casts a sound image made of roundness and presence. Percussions and sax have a tactile identity and you think being assisting at a real event.

The piano is grandiose. I have played a very performing high resolution recording by the German pianist Martin Vatter. Well, if you close your eyes you feel like having the Steinway & Sons Grand Piano of 1929 in your listening room. A unique experience that I wish you to have.

I am aware that what I am listening to right now is not the best system in the world, partly because the best system in the world does not exist, and partly because there are many systems that can perform well also with different typologies and philosophies, and furthermore all perfectible.

But people, what a great sound! I like very much everything.


CD/SACD Soulution 540

The Soulution 540 digital player is, with good reason, on the podium of the best digital musical machines. The price is obviously very high, together with the economic range of the complete system: around 150,000.00 euro.

Unquestionably, few are the lucky people who could enjoy the good sound of the Soulution 540. We have been lucky to do it.

The Soulution 540 has deserved five sparks in all the parameters I have considered.

For me it is a Spark in the Dark!




top score ✳✳✳✳✳ ReMusic Sparks


Tone colour: ✳✳✳✳✳ | Absolutely balanced and neutral. Both instruments and voices have been given back with amazing naturalness.

Dynamics: ✳✳✳✳✳ | Excellent. Without any vacillation or hesitation. Microdynamics at the top.

Detail: ✳✳✳✳✳ | Extraordinary. Hardly to get something better. The whole signal is reproduced with high spontaneity and without any effort.

Clearness: ✳✳✳✳✳ | Transparency and clearness, a liquid and clear sound, with a presence effect that gets very close to the live event.

Image: ✳✳✳✳✳ | Three-dimensional. Excellent scanning of the horizontal and vertical plans. The sensation of roundness both of voices and instruments is very strong.

Tone: ✳✳✳✳✳ | No coloration.


Official technical specifications:

Type: integrated CD/SACD

Converter: Burr-Brown PCM1792 24 bit/192KHz, 24 bit/384 KHz with DSP conversion

Analog outputs: 1 x balanced output (XLR), 1 x unbalanced output (RCA)

Digital outputs: SPDIF (RCA), AES/EBU (XLR), Optical (Toslink)

Digital inputs: SPDIF (RCA), AES/EBU (XLR), Optical (Toslink), USB

Nominal voltage: Model 220-240 V / 50-60 Hz, 220-240V - Model 100-120 V / 50 - 60 Hz, 100-120V

Power consumption: OFF (standby) <0.5 W-ON 50 W


Output voltage: 4Vrms (XLR), 2Vrms (RCA)

Peak Output Current: 0.2 A

Output impedance: 10Ohms

Frequency response (depending on data format): DC-100 KHz

Distortion: <0,002% (THD+N)

Noise floor: 140 dB

Volume range: 0-80 dB

Balance range: +/-9dB


Output voltage: SPDIF 500mV p-p, AES/EBU 5Vp-p

Output impedance: SPDIF 75Ohms, AES/EBU 110Ohms


Sensitivity: 0,3-5V p-p

Input impedance: SPDIF 75Ohms, AES/EBU 110Ohms

PLL-range: +/-100 ppm

LINK-System: +12V

Dimensions: 442x143x448 mm (WxHxD)

Official Italian dealer: to Audioplus website

Official current price in Italy: 19,900.00 EUR

by Roberto
Read more articles

Torna su


Vermöuth Audio banner
Omega Audio Concepts banner
KingSound banner
DiDiT banner

Is this article available only in such a language?

Subscribe to our newsletter to receive more articles in your language!


Questo articolo esiste solo in questa lingua?

Iscriviti alla newsletter per ricevere gli articoli nella tua lingua!


Sign up now!