DOOLEYS HIFI


THE NORTH WEST'S LEADING MUSICAL FIDELITY SPECIALIST

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Over 16 years ago, Musical Fidelity launched a limited range of products called Nuvista. What made the Nuvista range of products so special was that they used a micro metal clad valve in the circuit layouts. At the time Musical Fidelity were limited by the number of the micro valve bases that were available for this really special valve. Not to be put off by this Anthony Michaelson had bought all the Nuvistor valves that were available…rumours say this was in excess of 30,000 units, he then started a long search for valve bases, only in the last couple of years was his search completed, he now has sufficient bases to match the stock of Nuvistaor valves, hence the launch of the first product in the Nuvista 800 series. The Nuvista 800 amplifier will be joined later this year with a matching CD player., due to be launched in August 2015.
Full specifications on All Musical Fidelity products can be found
HERE
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Musical Fidelity Nu-Vista 800 Integrated Amplifier

Price: £8799


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For the first time in the history of hi-fi, Musical Fidelity have combined nuvistor technology with Surface Mount Design and CAD/CAM PCB concepts. The aim of this large undertaking was to create an ultimate super integrated amplifier. The result is extraordinary technical and sonic performance.
For Musical Fidelity, the NuVista 800 integrated was a labour of passion and love. They have tried to achieve the absolute maximum performance from every part of the circuit.
The NuVista 800 integrated offers full-on, high-end performance, in a beautiful, relatively compact package, and gives a comfortable 300 watts per channel.
The NuVista 800 delivers everything that its concepts promise. On the one hand, you have the beauty and warmth of nuvistor tubes. However, because of their superlative technical performance, there is no colouration or excessive warmth.
On the other hand, there is a huge power amp with massive reserves of power and current that has the delicacy and speed of attack (and decay) of a small triode power amp but, just you wait for that transient: it is delivered effortlessly with no colouration or limits.
The NuVista 800 sound quality is, to us at least, totally satisfying. Beautiful, deep and wide sound staging, effortless transients, incredible bottom end extension, speed, rhythm and then the exquisite mid range. We believe that this is what hi-fi is about.

Nuvista 800

Amplifier

Power output: 330 Watts per channel into 8 Ohms
THD (+ noise): <0.005 % typical 20Hz - 20 kHz
Signal to Noise Ratio: >107dB ‘A’ - weighted
Frequency Response: +0, –0.1dB, 10Hz to 30 kHz

Inputs

4x Line Level RCA / Phono
1x Line Level XLR Balanced

Outputs

1 pair line level RCA connectors, constant level Line outputs
1 pair line level RCA connectors, preamp outputs for e.g. bi-amping

General

Dimensions - WxHxD (mm): 483 x 187* x 510
*212mm on included optional pointed feet
Weight (unpacked / packed): 39 kg/ 47 kg
Nu-Vista 800 - Design and Build

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Sixteen years ago, Musical Fidelity were the first company in the world to use nuvistor tubes for their high-end NuVista series. The original NuVista series (NuVista pre amp, NuVista M3 integrated, NuVista 300 power amp and NuVista 3D CD player) created a sensation when they were launched in 1999. They gave an almost perfect balance between state of the art transistor and tube design.
Because there were only limited tube bases available in 1999, the NuVista series were all made in limited editions.Their reputation is legendary and, to this day, used NuVista series products for very high prices.
Background on nuvistors

Nuvistor tubes were designed in the late 1950s. Their design process took into account all the criticisms and weaknesses of the standard glass tubes that had gone before. As a result, nuvistor tubes offered:
Unprecedented reliability
Compact size
Very low microphony
State of the art technical performance
Total consistency between manufacturing batches
Indeed, nuvistors were the ultimate, high performance, triode tube. Unfortunately for them, transistors were just coming of age as nuvistors became available.
A bright new dawn

For at least three years after the launch of the original NuVista series, Antony Michaelson tried to get more tube bases. Nuvistor tubes were plentiful but bases were impossible to obtain. After a time, he stopped searching.
As many of you know, Antony Michaelson is persistent. About eighteen months ago, he started thinking about NuVistas again. This time, things were different.
Via the internet, he was able to locate what are probably the last nuvistor bases on this planet Earth. Antony was thrilled. He purchased all that could be found.
This made it possible for Musical Fidelity to realise their dream of manufacturing more nuvistor-based products, including the new mega super integrated, the NuVista 800.
This time, they would be able to combine their state of the art NuVista technology with their state of the art Surface Mount Design PCB techniques, and the new designs would benefit from the freedom of layout that they offer.
General description

The NuVista 800’s front end is positioned on the same PCB as the input circuitry. This keeps all PCB tracks as short as possible, and ensures that this highly sensitive function is at right angles to any stray hyseresis field from the transformers, ensuring superlative sonic performance.
The nuvistor stage itself combines nuvistor tubes with our exclusive Surface Mount Design and technology systems. This allows them to perform at a level never seen before.
The power amp stage is derived from our monster Titan amp, regarded by many as one of the best amplifiers ever made. However, they have made subtle improvements to the circuit, squeezing even more performance from what was already a legendary circuit design.
The overall configuration is dual mono, with a separate 1.5 kV, super silent drive mains transformer per channel.
The result -maximum performance from every part of the circuit- clearly shows just how much of a labour of love and passion for the NuVista 800 was for us.
Technical performance

The NuVista 800 delivers a comfortable 300 wpc. It is capable of truly massive current swings: about 200 Amps peak to peak. In a word, vast. Distortion at 1kHz is vanishingly low at 0.002%. At 10 kHz, it is about 0.003% and at 20 kHZ 0.004%. These are extraordinary figures. More astonishingly is the distortion into 4 Ohms (1kHz) is its exactly the same is into 8 Ohms.
NuVista 800 has very low noise and excellent stereo separation.
Because of its huge peak current capability, it can drive any speaker with any cable, without breaking a sweat.
NuVista 800 combines the beauty, delicacy and poise of state of the art tube and semiconductor design blended with massive power and current.
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Reviews & Awards

Read the full Hi-Fi News review. CLICK HERE

Read the Nuvista 800 Diaposon d’Or Awards 2014 CLICK HERE