“We are proud to announce our newest product, the preamplifier soulution 525. You will have the chance to audition the 525 preamplifier at its world premiere during the upcoming Highend 2018 show in Munich, May 10th – 13th.”
Uniting source components with power amplifiers, the preamplifier must perform the critical functions of impedance matching, level balancing and volume control while maintaining perfect signal accuracy and channel integrity. Adding nothing. Taking nothing away. While the perfect preamplifier continues to be a technical challenge for audio designers, we believe the 525 gets closest to the ideal.
As few components as possible in the signal path speak for an unbalanced circuit concept. In this case, the lowest possible stereo conversations can only be achieved with a consequent dual-mono design. The analogue circuits and the associated power supplies of the left and right channels are physically separated from one another and are additionally decoupled with filter networks. The 525 owes much to the design of the range-topping soulution 725 preamplifier. It uses the same volume control which ingeniously combines the smooth fingertip control of variable resistors with the precision and stability of fixed resistor networks. For the 525 we’ve chosen the best performing Vishay-Dale resistors with relays of the utmost quality. The end result is volume control that is finely adjustable in 95 steps of 1 dB each, with no perceptible switching clicks. Truly the best of both worlds.
In order to drive the longest of signal cables, the output stage of a preamplifier must be sufficiently powerful to do the job. The 525 employs a powerful, very fast and ultra-wide output stage that can drive long cables with ease. We team that with a similarly robust, high specification switched-mode power supply which features high-precision and extremely low-noise linear control circuits. Backed by more than 400,000μF of storage, the power supply of the 525 provides virtually unlimited pulse power with indiscernible levels of noise.
Noise and distortion have no place in highest class music playback. Only then can the full potential of the recording be heard. The richness of sound colours, the dynamism, the refinement. Musical transparency is pre-eminent in the 525. Colouration is simply not a factor. Control too is at the 525’s heart: stereo imaging precision is exemplary while sound sources appear perfectly focused on the sound stage. Once you audition the 525 you will come to understand the true nature of sound and the importance of the right preamplifier in achieving it.
Analog inputs
2 x balanced inputs (XLR)
2 x unbalanced inputs (RCA)
Analog outputs
1 x balanced (XLR)
1 x unbalanced (RCA)
Production start:
May 2018
Retail price (Canadian)
30,000 CDN