Gold Note PSU-10 Evo

External Power Supply for the Gold Note PH-10

The Gold Note PSU-10 Evo is the external power supply that Gold Note's own engineers regard as the single most transformative upgrade available to owners of the PH-10 phono stage — a component of reference power supply engineering that removes the internal power supply entirely from the PH-10's chassis, eliminates the principal source of electromagnetic contamination from its low-level analogue circuit, and delivers power of exceptional cleanliness, stability, and dynamic authority through a dedicated umbilical connection. It is not a marginal refinement — it is a fundamental change in the operating environment of the PH-10's circuit, one whose consequences are immediately and unmistakably audible as a lower noise floor, greater dynamic range, improved low-level detail retrieval, and a musical naturalness and ease that the internal power supply, however well engineered, cannot fully achieve within the constraints of a shared chassis.

External Power Supply — Eliminating Noise at the Source

By removing the power supply from the PH-10's chassis entirely, the transformer, rectifier, and regulation stages that generate electromagnetic interference within any shared-chassis design are physically separated from the sensitive low-level analogue circuits they serve. The consequence is an operating environment for the PH-10's gain stages that is free from the transformer magnetic field radiation, rectifier switching noise, and regulation circuit artefacts that an internal power supply inevitably introduces into the chassis environment. The PSU-10 Evo's power delivery is therefore cleaner, more stable, and more dynamically capable than any internal supply can be — and the PH-10's circuit responds to this improvement with a directness and transparency that confirms how significantly the power supply limits the performance of even the finest analogue circuits.

Modular Compatibility — PH-10 and Beyond

The PSU-10 Evo is designed specifically for compatibility with the Gold Note PH-10 phono stage — connecting via a dedicated umbilical that delivers the correct regulated voltage rails to the PH-10's internal circuit with complete stability. Its modular design philosophy reflects Gold Note's commitment to a system architecture in which individual components can be upgraded independently — ensuring that the investment in the PSU-10 Evo remains relevant across the full evolution of a Gold Note analogue system. Those building a complete Gold Note analogue system around the Gold Note Mediterraneo or Gold Note Pianosa turntables will find the PSU-10 Evo essential in achieving the full musical potential of the PH-10.

Gold Note Power Supply Engineering

Power supply engineering is one of Gold Note's defining technical strengths — a discipline in which the Florentine manufacturer has accumulated more than two decades of applied research and practical refinement. The custom-wound toroidal transformer at the heart of the PSU-10 Evo is specified and built to Gold Note's own requirements — optimised for minimum electromagnetic radiation, minimum mechanical noise, and maximum voltage stability under dynamic load conditions — while the regulation stages that follow it maintain precise output voltage regardless of mains supply variation or programme-related load changes.

Who Is It For?

The PSU-10 Evo is for every owner of the Gold Note PH-10 phono stage who wants to hear what their phono stage is genuinely capable of. It is equally relevant to those whose systems are built around demanding, low-output moving coil cartridges such as the Gold Note Donatello or Gold Note Machiavelli MkII — cartridges whose extraordinarily low output signals place the greatest possible demand on the noise performance of the phono stage's power supply.

Buying from Martins Hi-Fi

Martins Hi-Fi has been in Norwich since 1968. Elizabeth Gould runs the business today, and we stock only brands we have heard properly and stand behind. We can demonstrate the PSU-10 Evo in our Norwich showroom — connected to a PH-10 and a quality turntable and cartridge — so you can hear precisely what reference-quality external power supply engineering contributes to a serious analogue system. When you get in touch, you'll be speaking with Dave, Chris and Tim — experienced specialists who can advise on this product and your whole system.

Contact us at info@martinshifi.co.uk, call 01603 627010, or WhatsApp on 07554 687137. You can read more about how we work on our Why Martins Hi-Fi page. We are at 85–91 Ber Street, Norwich, NR1 3EY.