Musical Fidelity Nu-Vista PAS Balanced Stereo Power Amp with Separate Power Supply

NU-VISTA PAS | POWER AMPLIFIER   The Nu-Vista PAS is a fully balanced, discrete stereo power amplifier with 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 PAS features the tried and tested Nu-Vista stage featuring 6S51N nuvistors in a discrete class A amplifier buffer. Technical Talk This is followed by a balanced configuration circuit and balanced input high power, low distortion output amplifier stage. The power stage has 5 pairs of high power thermally compensated output devices for reliable and stable operation. Based on Titan 1000W stage, it has separate capacitors for bulk supply, and one each for output devices con siderably reducing output impedance and improving dynamics. Chokes are added for further improved supply ripple and pulse current spike reduction Bias is set for over 5W of initial class A operation thereafter the stage slides into class B operation at