Musical Fidelity NUVISTA PAS ENDSTUFE + PAS PSU secondhand

Erstbesitz, 2,5 Jahre jung, 1 Jahr Gewährleistung
Weltklasse Endstufe, zweiteilig, Referenz in vielen Testberichten.

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Die beste Endstufe überhaupt ?

Nu-Vista PAS - Specifications
Amplifier
High output power, greater than 300W into 8 ohms, 500W into 4 ohms, 1000W peaks into 2 ohms
Output Voltage: 49 Volts RMS
Output Current: 130 Amps peak to peak
Damping factor: 200
Output devices: 5 pairs per channel
Gain: 16x (23.5 dB)
THD+N: < 0.003 % typical, 20Hz to 20 kHz
Signal / noise ratio: >108dB ‘A’-weighted
Channel separation: >96dB
Input impedance: 100 k Ohms
Input sensitivity for full output: 3 Volts RMS
Frequency response: + 0, –1dB, 5Hz to 50 kHz
In & Output
4 fully independent inputs: 2x RCA & 2x XLR
2 loop through outputs: 1x RCA & 1x XLR
Speaker outputs: 2 pairs 4mm banana plug/binding posts
Trigger input and output: 3.5mm mono jack socket
Trigger level ±5V to ±12V
General Information
Weight PAS: 27kg net (35kg)
Weight PAS PSU: 40kg net (50kg)
Dimensions PAS (WxHxD): 483 x 187,5 x 475 (494 with connectors)
Dimensions PAS PSU (WxHxD): 483 x 187,5 x 475 (478 with connectors)
Mains voltages: 115/230VAC 50/60Hz (factory pre-set); 100VAC 50/60Hz (alternative)
Consumption < 0.5W in standby mode; 130W on and idle; 1060W maximum



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NU-VISTA PAS | POWER AMPLIFIER

The Nu-Vista PAS is a fully balanced, discrete stereo power amplifier with separate power supply unit.

Nu-Vista PAS Rear Panel

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Nu-Vista PAS - Overview



"These heavyweight Nu-Vista amps deliver an impression of unburstable power and resolution, the sound imbued with great clarity, detail, and confidence, even at very high basic playback levels."

EDITORS - HI-FI CHOICE 04/23



"The Nu-Vistas made for a spectacular experience, the likes of which I have rarely experienced even with the tube amplifiers that often set the standard in this discipline. The pair had any speakers we hooked up to it, elegantly under control regardless of the monitoring volume."

MICHAEL LANG - STEREO 04/23



"I have rarely heard such a combination that pleased me so much with its sense of rhythm. You feel immersed in the musical message – that gives me goosebumps – unrivaled in this price range."

EDITORS - AUDIO-2G 02/23

WATCH THE VIDEO





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 a point where the now much lower discontinuity is easier dealt with than “standard” crossover distortion.



Nu-Vista PAS Power Supply

The Nu-Vista PAS comes with its own dedicated external power supply.





To achieve better noise performance, we removed the AC mains power supply from the main unit and built it into another matching box. In this box we took advantage the extra space to set up inbuilt mains and output filtering. This quietens up the supplies and results in almost no mains-borne artefacts getting into the sensitive audio circuitry. The Power supply has ON/ Standby LEDs and is controlled from the main unit front panel. If total mains isolation is required, the power s