Preamplifiers — Soulution Audio 727

The 727 is a preamplifier from Soulution Audio, built with an exceptionally high input impedance and extraordinarily wide rated bandwidth. This model represents a substantial expression of Soulution Audio's flagship preamplifier engineering, offering measured figures among the most extreme available in any preamplifier.

Position in line

It sits alongside the 525 preamplifier in Soulution Audio's preamplifier hierarchy. This positioning alongside the 525 suggests Soulution Audio offers a small, carefully considered family of preamplifiers, each likely differentiated by specific chassis scale and connectivity.

Key specs that matter

Three balanced and two single-ended inputs are provided, with two balanced and one single-ended output. Input impedance is an exceptionally high 4,400,000 ohms for both connections, minimising loading effects on source components far beyond what a conventional preamplifier achieves. Output impedance is an extraordinarily low 0.8 ohms balanced and 0.4 ohms single-ended. Output voltage is 14 V balanced and 7 V single-ended. Rated bandwidth reaches an almost unimaginable 20 000 000 Hz. Signal-to-noise exceeds 120 dB. At 480 x 450 x 167 mm and 28 kg it is a substantial, heavy chassis.

Sound and use context

Expect an exceptionally transparent, wide-bandwidth presentation with the extraordinarily high input impedance and exceptionally low output impedance representing near-ideal electrical characteristics for a preamplifier - a reference-level performer reflecting Soulution Audio's uncompromising engineering taken to its most extreme conclusion.

Pairing

The exceptionally high input impedance suits virtually any source component without loading concerns, and the healthy 14 V balanced output ensures strong drive into even the most demanding power amplifier.

Alternatives

Soulution Audio's 525 preamplifier sits alongside this model in the brand's preamplifier hierarchy, worth comparing directly with a specialist dealer given the considerable investment either flagship option within this range represents. Given the considerable price and ambition this flagship preamplifier represents, a dealer demonstration alongside a matching Soulution Audio power amplifier is strongly worthwhile before committing, since the brand engineering philosophy likely shines most clearly in a fully matched system. Soulution Audio relatively small dealer network worldwide means sourcing a specialist is well worth the extra research effort at this level.