PSU-10

GoldNote PSU-10 — external power supply. External four-rail super-inductive power supply exclusively for the PH-10 phono preamplifier with hybrid Dual Choke filtering technology. Reduces noise and enhances dynamics with >80dB noise rejection and 0.05% output voltage stability. Compact 200×80×260mm chassis, 4kg, consuming 25W with >50W dynamic power output.

Technical background

GoldNote external power supplies use Super Inductive Dual Choke (SIDC) technology — dual inductor rails that reject common-mode and differential-mode interference simultaneously, achieving >80dB noise rejection. Ultra-low-noise voltage regulators maintain 0.05% output stability with full-power response under 2.5 microseconds, ensuring the connected component is never starved of current during dynamic peaks in the audio signal.

Design story

GoldNote's external PSU philosophy evolved from the discovery that the noise ceiling of their internal power supplies — while carefully designed — could be lowered by dedicated outboard units. The SIDC technology was developed in-house and refined over successive generations; the PSU-1250 now deploys seven independent transformers and regulators, achieving a noise floor that is effectively inaudible even on the most revealing phono stages and DACs in the GoldNote range.

Best for

PH-10 owners wanting the recommended outboard power supply upgrade; buyers of the original (non-Evo) System 10 components wanting a performance step-up PH-10 owners wanting the recommended outboard PSU upgrade; original System 10 component owners wanting performance step-up Phono upgrade: PH-10 + PSU-10 — The Ear-reviewed combination delivering reference-level phono performance

Awards & press

⭐ N/A "Adding the PSU takes it, in my humble opinion, to a level which I have rarely been privileged to hear." — Chris Kelly, The Ear, May 2019 (PSU-10 with PH-10)