The Nagra Classic AMP stereo amplifier combines pure Class A performance with innovative power management and Nagra’s iconic Modulometer. With 100 W per channel and versatile configuration options, it delivers dynamic, precise, and engaging sound for audiophiles seeking high-end performance.
Nagra Classic AMP – High-end Amplifiers with Precision Engineering for Musical Purity
The Nagra Classic AMP is a stereo amplifier designed to bring clarity and depth to high-performance audio systems. Known for its meticulous engineering, this amplifier operates in pure Class A for most of its power range, delivering natural, detailed sound. When greater output is required, it seamlessly transitions into Class AB, preserving the integrity of the music across all volumes.
A Simplified Design for Superior Sound
Central to the Classic AMP’s musicality is its simplified output stage, which uses tandem MOSFET transistors. This streamlined approach eliminates the need for multiple transistor pairs, ensuring a cohesive and consistent audio signal. The result is a natural and engaging listening experience that highlights the finest details of any recording.
Innovative Power Delivery
Nagra has engineered the Classic AMP with a robust and responsive power supply. Its advanced filtering system and overdimensioned transformer ensure the amplifier can react instantly to sudden musical transients, maintaining dynamic range and control. This thoughtful design enhances its ability to handle complex musical passages with ease.
Versatility in System Integration
Designed with flexibility in mind, the Classic AMP features balanced and unbalanced inputs, making it compatible with a wide range of preamplifiers and sources. It supports both bridged and bi-amplification configurations, offering a versatile solution for bespoke audio setups. Whether driving high-sensitivity speakers or more demanding designs, the Classic AMP performs with remarkable stability and precision.
A Nod to Tradition
The Classic AMP is unmistakably Nagra, featuring their iconic Modulometer on the front panel. This distinctive detail adds a visual element of precision, allowing users to monitor performance in real-time. The amplifier’s elegant design is as much a statement of craftsmanship as it is a functional component of a high-end system.
Conclusion: A Reliable Partner for Audiophile Systems
With its thoughtful engineering, adaptable performance, and commitment to sonic excellence, the Nagra Classic AMP is a versatile addition to any high-end audio system. Its ability to convey music’s full emotional spectrum ensures a rewarding listening experience, whether paired with other Nagra components or integrated into an existing setup.
Additional information
Weight
18 kg
Dimensions
39.5 × 27.7 × 17.5 cm
Power
100 W RMS per channel into 8 Ω
Sensitivity
1 V or 2 V RMS
Bandwidth
10 Hz to 80 KHz, +0/-3 dB
Crosstalk
>70 dB
Signal-to-noise ratio
Typically 110 dB
ASA “A” weighted
THD+N
<0.05%
Input impedance
>100 KΩ
Automatic start
For input level >10 mV
Protection
Overheating > +60° C (140° F)
Deactivates Amplifier
DC speaker protection above ± 2.5 VDC
Consumption
400 W max
less than 1 W in standby and Auto mode
Operating Range
90 – 110 V or 110 -132 V or 180 – 264 V a.c.
50 – 60 Hz
Weight and Size
18 Kg (39 lb 10 oz)
350 (400 from nose of the modulometer to back of the connectors) x 277 x 165mm (15.7 x 10.9 x 6.5 inches) – Add 3cm or 1.2 inches with a VFS plate placed under
Finish
Silver
Nagra Audio
Nagra Audio, a Swiss-based manufacturer, is renowned for producing some of the most finely crafted high-end audio components in the world. With over 70 years of experience, Nagra has made its mark in both the professional recording industry and the high-fidelity consumer audio market, offering a range of products that are synonymous with precision, musicality, and craftsmanship.
Their HD Series, which includes the HD DAC X, HD AMP, and HD PHONO, represents the pinnacle of Nagra’s technological innovation. The HD DAC X is celebrated for its ability to handle high-resolution digital formats like PCM and DSD256, producing a remarkably analog-like sound that is both smooth and detailed. The HD PHONO preamplifier, with its dual-mono Class A tube design and advanced custom transformers, has become a benchmark for vinyl enthusiasts, offering warmth, detail, and clarity in analog playback. Both products benefit from Nagra’s meticulous approach to reducing noise and interference, with separate, supercapacitor-based power supplies ensuring clean and precise signals.
Complementing this high-end analog setup is the Nagra Reference Turntable, one of the most advanced turntables available today. The Nagra Reference Turntable features a dual-motor belt-drive system, a finely tuned suspension system, and a precision-engineered platter, all designed to ensure stable, vibration-free playback. Paired with the Nagra HD PHONO and the Nagra Reference MC Cartridge, this system is capable of extracting every nuance from vinyl records, making it a top choice for audiophiles who value the ultimate in analog sound reproduction.
For audiophiles seeking cutting-edge performance in a more accessible format, the Classic Series offers products like the Classic DAC II and Classic AMP, which maintain Nagra’s signature transparent and dynamic sound but in a more compact and approachable package.
Recently, Nagra has expanded into the digital realm with the Nagra Streamer, designed to integrate seamlessly with their DACs and amplifiers. This allows users to stream from services like Tidal, Spotify, and Qobuz, without compromising the legendary Nagra sound quality.
Nagra’s extensive lineup, from the Reference Turntable and analog components to cutting-edge digital solutions, maintains its status as a top-tier brand in the world of high-end audio, delivering Swiss precision, impeccable sound quality, and innovative design.
Reviews
Steve Huff – Nagra Classic HiFi System Review 2022
“When evaluating the Nagra Classic set I said to myself “If I owned this set it would be buried with me”. There is nowhere else I would want to go, and that is saying a lot. With so many amazing HiFi brands out there I have found some I adore. Pass Labs is one of the brands I consider lifetime brands. Nagra is yet another.”
“The Classic cannot readily be described as affordable (in the normal sense, as understood by those of us in the mere mortal wage-earning bucket), but I have no qualms saying you do get what you pay for in terms of sonic performance, build quality and pride of ownership.
Excellence doesn’t come cheap, and if you are among the ladies and gentlemen who have the wherewithal to acquire and place this amplifier into an exquisite system which allows its qualities to shine, I am envious of you. Way recommended!”
Nagra Classic Preamp/Classic AMP review – What Hi-Fi? (June, 2018)
“For us, the Nagra’s impressively broad spread of talents wins out. Once in full flow it leaves the music to take centre stage and does its work quietly from behind the curtain.
Make no mistake; the Classic Preamp/Classic Amp combination is exceptional.”
“This is a very ambitious rather big amp which is simply presented in a smallish casing to deceive with classy understatement if not an understated price. The pangs of stiff lust, desire, fiscal ability and all that emotions-meet-cold-banker’s stuff. Oy veh…”
