Open Audio Designs and Pure Audio

No pictures, just a description of the demonstration at the Melbourne Audio Club.

Warwick Freemantle and Jon De Sensi presented the evening, source was vinyl played on a Kuzma turntable and arm and a $4000 cartridge, sounding really good when amplified by the new OAD pre- and power amplifier and the good looking Gauder RC-7D Mk II speakers. The willis room was full, and the music was varied. Stand out records included a German violin recording which had the most realistic violin reproduction I have heard, and Louis Armstrong’s performance of St James Infirmary. Also popular tracks from The Wall (Pink Floyd) and Dire Straits. All very familiar to the club age group!

You tube have a version of St James Infirmary

Next Melbourne Audio Club Meeting

21 February 2018

8PM in the Willis Room, Nunawading Civic Centre




A New Year has started, and it has brought to the Australian Hi Fi scene a new player to the market. Warwick Freemantle from the Pure Music Group will be demonstrating to the club a new range of electronic components from Open Audio Designs. The man behind this new company , Jon De Sensi, will be our guest presenter for the night.

Jons new products, a pre and power amp, have raised the bar for Australian High End design and manufacturing with world class sonics at affordable pricing. The CP1 features a 4.3” TFT LCD Full Colour display, with capacitive touch. All features of the CP1 are controlled by this touch display which eliminates any front panel mechanical potentiometers and switches. Gold plated Swiss made relays select inputs, followed by a buffer amplifier that presents a benign load to signal sources. With few components in the path as possible, a direct coupled dual mono layout helps to maximise audio purity and virtually eliminate crosstalk.

The UF1 Power Amplifier utilizes the latest in transistor technology to deal with significant distortions. As the load impedence of an amplifier is decreased, large signal non-linearities begin to appear. This distortion is significantly dependent on the quality of the amplifier’s output stage power transistors. The UF1’s transistors are in a different class, in that; the current gain is completely maintained over its full power bandwidth, while also minimising the crossover distortion.

Partnering the electronics will be a new speaker from Gauder Akustik, the Berlina RC-7D Mk II with the Accuton Pure Diamond Tweeters. Argento Cables will look after the signal from each component. With the optional phono card ( PP1) installed in the preamp, the source for the night will be the Kuzma Stabi SPS Turntable with Kuzma 4 Point 9” Tonearm.

This will be OAD’s first public showing at an audio event. We may well have a full house.

Nick Karayanis Program Co-ordinator.