Gold Note PST-10 gold

The Gold Note PST-10 is an external power supply specifically developed to optimize the Italian manufacturer’s turntables. Inspired by the PSU-10, the power supply designed for the PH-10 phono preamp, this module uses a hybrid, super‑inductive dual‑choke design that employs four transformers and proprietary filtering technology. Compatible with several models in the range, from the Valore 425 to the prestigious Bellagio, the PST-10 improves the stability of the current supplied to the motor for a more nuanced and detailed sound.

A lineage with the PSU-10 phono preamp

The PST-10 inherits the chassis and Dual-Choke design of the PSU-10, the external power supply developed for the PH-10 phono preamp. This technical kinship is no coincidence: Gold Note has transposed a proven solution from the field of phono signal processing to turntable motor power. The result preserves the same core principles – inductive filtering, dual choke, isolation from the mains – while adapting them to the specific requirements of a drive motor.

The metal case has compact dimensions of 200 × 80 × 160 mm and a weight of 3 kg. This half-width design makes it easy to integrate into an existing system, whether on a shelf or close to the turntable. Three finishes are available: black anodized, silver anodized, and gold anodized, each featuring traditional brushed aluminum.

Dual-Choke technology: dual‑inductor filtering

At the heart of the PST-10 is a proprietary design called Dual-Choke. This approach uses an inductive filter on the analog stage, powered by a dual inductor that simultaneously drives the positive and negative high-current stages. In practice, the system employs two chokes mounted in series to filter the voltage upstream of the output circuits.

The power supply uses four transformers, three of which are dedicated to the current delivered to the turntable, while the fourth is associated with the choke filter. This distribution allows the functions to be physically separated: the main transformers provide the power required by the motor, while the fourth transformer exclusively powers the two filtering chokes. The device also features a four-stage architecture, with an equal number of ultra‑low‑noise voltage regulators, each stage benefiting from its own regulation to prevent any contamination between the power rails.

The filtering system is designed to eliminate interference and electrical noise from the mains supply. By achieving complete isolation from the AC power grid, it creates an ideal operating environment for the turntable electronics to perform at their best. The turntable is thus decoupled from the home electrical network, whose fluctuations and interference can no longer affect the platter’s rotation.

Electrical performance and silver cable

The PST-10 delivers power with a consumption of 25 W and a dynamic power exceeding 50 W, allowing it to handle the motor’s peak demands during start-up or speed adjustment phases. Output voltage stability is a critical parameter for rotational consistency: maximum variation does not exceed 0.05%.

Full‑power response time remains below 2.5 microseconds, a speed that allows the regulator to instantly correct any fluctuation. As for noise rejection, the PST-10 offers a value greater than 80 dB for both line noise and common‑mode noise. These figures mean that mains‑borne interference is attenuated by a factor greater than 10,000.

The power supply comes with a custom 1.5 m power cord made of silver‑core conductors. This specific cable provides the connection between the PST-10 and the turntable. Silver, the metal with the best electrical conductivity of all elements, was chosen to minimize resistive losses along this path.

Compatibility with the Gold Note turntable range

The PST-10 is supplied as standard with the Bellagio Conquest and Bellagio Reference turntables, the top‑of‑the‑range models in the catalog. The Bellagio Conquest, available as a limited edition, features a massive 100 kg structure standing 125 cm tall, equipped with a 270 mm platter spindle. The Bellagio Reference is directly derived from the Conquest model, with five curved plinths and a more compact format. These exceptional turntables benefit from an external power supply that matches their technical ambitions right from purchase.

The PST-10 is also an upgrade for the Mediterraneo, Giglio, Pianosa, Valore 425 Plus, and Valore 425 Lite models. The Valore 425 series represents Gold Note’s entry‑level range, with a 30 mm‑thick MDF chassis, a heavy platter, belt drive, and a 9‑inch tonearm. For these turntables, originally equipped with a simpler built‑in power supply, the PST-10 represents a major step up that transforms motor performance.

The “The Italian Turntable” series brings together the Pianosa, Giglio, and Mediterraneo models. The Giglio, the second model in this series, shares some of the Pianosa’s features, such as the double plinth with the lower part in a half‑wave shape and the B-5.1 tonearm, with an improved motor for better speed stability. The Mediterraneo is the most ambitious model in this series, building on the elements of the lower models while benefiting from numerous improvements.

Technical specifications

Internal components

• Four high-quality audio transformers
• Four ultra-low-noise voltage regulators

Electrical performance

• Maximum variation of output voltage: 0.05%
• Line noise rejection: > 80 dB
• Common-mode noise rejection: > 80 dB
• Full-power response time: < 2.5 µs

Power supply

• Mains power: 100–120 V / 220–240 V with automatic detection, 50 / 60 Hz
• Power consumption: 25 W
• Dynamic power: > 50 W
• Standby consumption: < 1 W
• Fuse: 0.5 A T

Connection cable

• Custom silver cable powering the turntable

Dimensions and weight

• Dimensions: 200 mm (W) × 80 mm (H) × 260 mm (D)
• Weight: 3 kg net, 4 kg packaged

Compatibility

• Included with: Bellagio Conquest, Bellagio Reference
• Upgrade for: Mediterraneo, Giglio, Pianosa, Valore 425 Plus, Valore 425 Lite