Musical Fidelity Nu-Vista PRE Fully Balanced Discrete Class A Preamplifier with Separate PSU

Nu-Vista PRE - OverviewBased 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.Technical TalkThe 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.Nu-Vista PRE Power SupplyThe Nu-Vista PRE comes with its own dedicated external power supply.To achieve better noise perfo