Graham Slee PSU1 Power Supply

Graham Slee PSU1 Power Supply 

A regulated power supply with a 24V DC stabilised output capable of supplying all Graham Slee products, the Graham Slee PSU1 will take the sound quality of your Graham Slee product to the next level.

Key Features

• Suitable to power all existing 24v Graham Slee products
• Safety certified to IEC standard 60950
• Designed & built in the UK

With low noise and hum, it is effectively a battery power supply for your Graham Slee products, due to its extremely low output impedance coupled with high current delivery. The detachable figure of 8 mains cable allows experimentation with aftermarket mains cables with the possibility of even greater sound quality.

The PSU1 is the linear audio power supply supplied with the Graham Slee flagship phono stage preamps and headphone amplifiers. Safety certified to IEC standard 60950

The PSU1 linear audio power supply has a stabilized output voltage of +24VDC at a down-rated 200mA. It is available with DC plugs to fit 2.5mm (standard issue) or 2.1mm DC socket pins, and with detachable mains cords

The PSU1 is designed to be a remote power supply placed well away from sensitive equipment like turntables and cartridges which are susceptible to pick up of stray magnetic fields. For maximum isolation it is best sited off the hi-fi rack. 

It uses a specially manufactured mains transformer made using top quality transformer steel thus consuming minimal excitation (core magnetisation) current whilst optimising transformer regulation. A benefit is that it keeps transformer buzz to an absolute minimum which is only audible at very close quarters.

Transformer secondary, rectifier and reservoir capacitor interconnections are kept to the absolute minimum length minimising charging current losses and interactions.

The PSU1 can be used to upgrade the sound quality - sound-staging, more vivid tonal colour and bass detailing - of Graham Slee phono stage preamps and headphone amplifiers supplied with switch-mode or wallwart power supplies. Upgrading to the PSU1 has the effect of taking your Graham Slee phono stage preamp or headphone amplifier to a higher level of musical performance.

Who is Graham Slee?

Graham Slee is a small, enthusiastic manufacturer of realistically priced, high-performance phono stages and headphone amplifiers, designed and built by hand in Yorkshire since 2003. Very positively reviewed by the UK and international magazines, demand for these products has been overwhelming as the world's hifi enthusiasts can't believe the performance on offer for the price asked.