P a g e
6
Introduction
Congratulations on the purchase of the new Nu-Vista PRE pre-amplifier. Great attention has been paid to
internal layout, isolating each circuit section to prevent possible interaction. The unit features a finely tuned
and tweaked Nu-Vista valve design, for smooth sound coupled with low noise and virtually no distortion.
The Nu-Vista PRE uses a balanced configuration circuit and balanced precision matched stepped attenuator
for volume control. 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. The resultant performance achieved by this unit is
among the best in the world. It has excellent signal to noise ratio, low distortion, wide bandwidth and dynamic
range, with extraordinary resolution and fine detail.
Cleaning
Before cleaning the unit, switch off power at the mains switch and remove the mains plug from the wall socket.
Clean the cabinets using a moist cloth. Using solvents, white spirit or thinners is not advised, as they could
damage the surface finish.
Setting up
Position the Nu-Vista PRE and its PSU on a stable, horizontal surface where there is no risk of it being knocked.
Make sure ALL units involved are switched off and unplugged from mains supply before making or removing
any connections. We recommend to place the Nu-Vista PRE PSU next to the PRE unit itself, with as much
space between them, so that all power cables can be connected comfortably and there is no extra strain on
the cables.
Important note:
During normal operation, the unit dissipates an appreciable quantity of power at all times, and it
is important that it is well ventilated. The top and bottom are perforated to allow the smooth flow
of heat through the unit. However, the unit must not be enclosed in a cabinet or placed where
the ventilation holes are impeded as this could result in excessive heat build-up.
The Nu-Vista PRE must be protected from humidity
– if the unit is moved from a cold place to a
warm room, leave the unit for an hour or so to allow sufficient time for the moisture to evaporate.
Audio Connections
Inputs:
The Nu-Vista RE has single ended (RCA) line level and balanced (XLR) line level inputs. Choose the
desired input to be used:
Unbalanced RCA Line Level Inputs:
Connect all RCA single-ended sources to relevant analogue inputs (see page 8 for more information). Use
good quality fully connected (signal and ground) coaxial phono cables for all RCA signal connections. Take
care with positioning all input leads, try to ensure that they are well shielded and kept as far away from mains
and speaker leads as possible.
Balanced XLR Line Level Inputs:
Connect source balanced outputs to the Nu-Vista PRE balanced inputs using good quality XLR balanced
leads. Recommended lead wiring is shown on P.7
. Note some products simply connect “cold” input pin 3 to
ground. This does no harm to unit, but may result in an audible reduction in signal level from this input and a
slightly worse signal to noise ratio.
Outputs:
The Nu-Vista PRE has fixed
(FIXED)
and variable
(PRE)
single ended (RCA) line level and balanced
(XLR) line level outputs.
PRE Output
: Connect
power amplifiers
to the variable
PRE
output.
FIXED
Output
: Direct loop through of selected source. The level of this output is unaffected by the volume
control. The
FIXED
output can be used to connect headphone amplifiers, different pre-amplifiers or recording
equipment (tape machines, etc.).
INSTALLATION
Summary of Contents for NU-VISTA Series
Page 1: ...Installation Guide ...
