Soulution 711 STEREO

Stereo power amplifier
1 × balanced (XLR) 1 × unbalanced (RCA)
2 pairs Cu-terminal, gold plated
+ 26 dB
Frequency Response:
0 – 1 MHz
2 × 150 W @ 8 Ω 2 × 300 W @ 4 Ω 2 × 600 W @ 2 Ω Pulss võimsus 2x 6000W
0.5 W standby idle 300 W max 1600 W
less than 0.001% at 50 W @ 4 Ω (20 Hz – 20 kHz)
Signal to noise ratio:
108 dB (5 W @ 1 kHz)
Channel separation:
more than 120 dB @ 1 kHz
Imput impedance:
4.8 kΩ balanced (XLR) 10 kΩ unbalanced (RCA)
Damping factor:
more than 10 000
Output current:
120 A (limited)
480 × 280 × 535 mm

65 000,00€

About product

Higher precision, even more stability and velocity…

… than already has been achieved with the soulution 710 stereoamplifier, seems to be im­possible. Still, the new soulution 711 significantly out­per­forms its prede­cessor in all disciplines! The new “switched mode” power supply technology brings the soulution 711 to new level of per­formance. Improve­ments on the test bench get confirmed by the performance in the listening room. Words alone cannot convey the per­for­mance and sheer acoustic presence of the soulution 711 stereo­amplifier. We’ve combined the ultimate technical specification and highest possible performance with just one aim – to liberate the best the music has to offer. Listen like never before. Marvel. Enjoy. Without limits.

Key Features

  • Audio grade “Switched Mode” power supply (4 × 600 VA )
  • More than 1,000,000 µFarad storage capacity in the power supply unit
  • Peak current rating of more than 120 Ampere
  • Impulse power rating > 6’000 Watt


The ideal amplifier is perfectly load stable, 100% level and phase accurate, and has no long signal paths. It should not use tricks like over amplification and very high negative feedback to achieve good results in the lab but poor sonic per­for­mance in the listening room. The soulution 711 stereo­amplifier combines extreme speed with an ultra-wide band­width (1 MHz/– 3 dB) and a high current capability far beyond that of valves and output trans­formers. A unique and sophisticated circuit design opens up sonic qualities once considered incompatible: Precision, Velocity, Stability and Power. In the soulution 711 they are brought together for the first time – all in the pursuit of musical perfection. The soulution 711 is closest of all to this ideal. It can provide up to 300 Watt continuous power into 4 Ω and more than 6,000 Watt transient power per channel. More than enough to breathe new sonic life into even the most demanding, low-efficiency loudspeakers.

Throughout, the soulution 710 is designed as a consistent dual-mono layout. Both left and right channels feature identical audio amplifiers, each with its own high efficiency power supply. The housing forms an integral part of the design providing cooling for the output stages and damping to minimize microphonic interference.

From the input the soulution 711 first buffers the music signal. A high performance correction amplifier is then used to capture and correct any deviations in the signal, very quickly and very precisely. Ultra wideband amplification using no feedback loops follows, a less than 10 nanosecond transit time and level accuracy to within 0.1 dB ensuring signal purity. The whole is housed within a sealed module, maintaining a common temperature across all stages to further guarantee precision. The output stage comprises 14 power transistors per channel, all mounted onto a massive copper rail which is temperature controlled for a constant quiescent current. The soulution 711’s impressive low level signal handling is reflected in its raw power delivery. Current levels of 120 A and more are readily attainable.

Power supply
A stable supply voltage is key to a good sounding amplifier. The new power supply of the soulution 711 stereo­amplifier is based on audio grade “switched mode” modules. Four units with 600VA each combined with highend storage capacitors (> 1,000,000 microFarad) provide enough power reserves that allow the 711s reproduce even very complex music signals with ease. Circuitry that does not process audio signals should not be able to influence them. That’s why we use dedicated power supplies for the ancillary stages.

Power, mode and input functions are operated from front panel buttons. Power toggles between on and off states. Mode transfers control of turn-on to an associated preamplifier via soulution’s LINK system. Input selects the desired input and mutes the others. The front panel display indicates operating status. Comprehensive built-in protection ensures safe operation and long life. This includes a level limiter (soft clipping) as well as over current and overheat protection.

Connectors and start-options
The stereoamplifier 711 does have balanced and unbalanced inputs. Switches at the back of the amplifier allow to define the start options for the brightness of the display, the start-condition of the amplifier and the operation mode (mono or bi-amping).

About brand


Soulution is owned by the Spemot corporation, a company located in the Swiss town of Dulliken. Spemot is a well-established designer and producer of electronic devices and electric motors used in automotive and other applications including professional catering equipment. The company has a strong track record in innovative bespoke solutions that meet specific customer needs.

The soulution brand for premium audio was created by Spemot’s two managing directors Cyrill Hammer and Roland Manz, both of them passionate high-end audio hobbyists. The pair are long-time Swiss distributors of the Hi-Fi & Records magazine. Having owned and heard top amplifiers produced by US and Japanese manufacturers, they resolved to lay down a challenge and build a family of audio products that would set a new and even higher benchmark.

As reviews of soulution products by audio magazines around the world testify, Hammer and Manz have achieved their goal.


The outstanding sound qualities of the soulution products should also be supported by the design of housing, both visually and by their construction. Due to their size it was clear that they must integrate optimally into a listening/living room to be enjoyed not just for their sonic beauty but as well for their visual appearance. The development of the housing design was therefore carried out with the same care and professionalism as the development of the electronics. Several proposals were made which fulfilled both the technical requirements for stability and heat dissipation, as well as the design requirements.

Design Awards

The effort has paid off. The soulution products were awarded several times for its timeless and elegant design by international design juries.

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