The Nu-Vista PRE is a fully balanced, discrete class A preamplifier with legendary Musical Fidelity Nu-Vista stage and separate power supply unit.
Based on our excellent Nu-Vista 800 circuit we decided to go all out “fully balanced” on the Nu-Vista range.
The Nu-Vista PRE features the tried and tested Nu-Vista stage featuring 6S51N nuvistors in a discrete class A amplifier buffer.
The Nu-Vista PRE uses a balanced configuration circuit and balanced precision matched stepped attenuator for volume control. This means even at low volume levels, as well as higher, stereo imaging will be precise and accurate. For driving strength, a pair of mini power amplifiers (equivalent to 50W) are used for the output stages. They run in Class A for preamp purposes, giving the best in line driving capability, dynamic range, as well as reduced noise and distortion inherently. Supply capacitance is generous, and chokes are added for further improved supply ripple and pulse current spike reduction.
Nuvistor tubes were invented in the 1950s to solve the many shortcomings of conventional tubes. Unlike them, Nuvistor tubes offer very high reliability, low microphony, low noise, consistency from batch to batch, small size, relatively low power consumption and great technical performance.
Unfortunately just as uses for Nuvistor tubes were being explored, the transistor was invented and it was ‘game over’ for Nuvistors. There the matter rested until about fifteen years ago, when Musical Fidelity created the first of its ground-breaking Nu-Vista series.
One famous application was in the famed Neumann U 47 studio microphone. This microphone was highly regarded by artists all over the world, and was used by many top recording artists such as Frank Sinatra, The Beatles, and so on.
| Output | |
| Voltage | 28 Volts RMS |
| Output Impedance | <47Ω |
| THD+N | < 0.002 % typical, 20Hz to 20 kHz |
| Signal / noise ratio | >120dB, 20Hz - 20kHz |
| Gain | 2.15x (normal); 4.3x (+6dB enabled); volume maximum |
| Input impedance | 100 k Ohms |
| Overload margin | 24dB |
| Channel separation | >100dB, 20Hz - 20kHz |
| Frequency response | +0, -1dB, 5Hz to 100kHz |
| Connections | |
| Line level inputs | 6 pairs line level single ended RCA connectors |
| 6 pairs line level balanced XLR connectors | |
| Line level outputs | 1 pair fixed line level single ended RCA connectors |
| 1 pair fixed line level balanced XLR connectors | |
| 1 pair variable (pre) line level single ended RCA connectors | |
| 1 pair variable (pre) line level balanced XLR connectors | |
| Trigger input and output | 3.5mm mono jack socket |
| Trigger level | ±5V to ±12V |
| Power requirement | |
| Mains voltages | 115/230VAC 50/60Hz (factory pre-set) |
| 100VAC 50/60Hz (alternative) | |
| Consumption | <0.5W in standby mode |
| 65W maximum | |
| Weight | |
| Nu-Vista PRE unit only, unboxed | 22 kg |
| Nu-Vista PRE in shipping carton | 30 kg |
| Nu-Vista PRE PSU unit only, unboxed | 25 kg |
| Nu-Vista PRE PSU in shipping carton | 34 kg |
| Maximum Dimensions | |
| Nu-Vista PRE (WxHxD) | 483 x 187,5 x 491 (506 with connectors) mm |
| Nu-Vista PRE PSU (WxHxD) | 483 x 187,5 x 475 (478 with connectors) mm |
| Standard accessories | |
| IEC type mains lead | 16-Amp type |
| Remote control | Nu-Vista PRE remote |
| Batteries | LR03 or AAA, manganese alkaline type 2 off |
| 2x Power cable (1m length) | 5-pin XLR |
| 1x Control power cable (1m length) | 4-pin XLR |
| 8x Spike Foot | |
| 8x Spike Foot Cup | |
| 8x Spike Foot Screw | |
| 8x Felt pad for Spike Foot Cup | |
| 8x Felt pad for Standard Foot |
