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The M5si is a sensational integrated amplifier with exceptional power and clarity.
The M5si is a real high end amplifier. At 150wpc, with high current delivery, it will drive virtually any loudspeaker easily.
Internally the M5si is configured as two independent monoblocs with a separate preamp, but all mounted on one pcb. Its technical performance is about equal to the M6si.
The M5si In Brief
- 150wpc
- Excellent technical performance
- Preamp output
- Unconditional stability, will drive any loudspeaker
- Wide range of useful inputs including asynchronous USB and MM phono
- Excellent hunky build quality
Specifications
Power output: 150 W per channel into 8 ohm
Signal to Noise Ratio: >100 dB ‘A’ - weighted
Frequency Response: +0, –0.1 dB, 10 Hz to 20 kHz
Inputs: 4x Line Level RCA, 1x USB type ‘B’ connector - asynchronous data stream at up to 24-bit/96kHz, 1 x MM phono input, Trigger in
Phono
Sensitivity: 3 mV nominal (MM)
Signal / noise ratio: >70 dB ‘A’-weighted
Input impedance: 50 k ohm (MM)
Frequency response: RIAA/IEC ±0.5 dB 20 Hz-20 kHz
Outputs: Trigger out, Fixed, line level output, Variable, preamp output
Dimensions - WxHxD (mm): 440 x 100 x 405
Weight (unpacked / packed): 14.6 kg/ 18.8 kg
| Looking ahead to the future has always been a major factor when it comes to the creation of our products. With the C 368 Hybrid Digital DAC Amplifier, your home audio system will never fall behind the pack. Thanks to our MDC technology, the C 368 is easily customisable and ready for all future features and upgrades. With the optional BluOS module, the C 368 can connect to your network and be controlled through a smartphone, tablet, or desktop, and connect wirelessly to any other BluOS-enabled device to create a multi-room High Resolution Audio system. You can also instantly connect to the C 368 through Bluetooth, giving you the ability to stream wirelessly from any Bluetooth-enabled device, and if you’re a vinyl fan, you can also add a turntable. Enjoying music has never been so easy. A totally modern approach to amplification, the C 368 is the ultimate amp for any music lover’s system.
INTRODUCING THE NAD C 368.
Getting it Right
When it comes time to create a product, we never overlook the most crucial of requirements. From low noise circuits to precise volume control action, to accurate channel balance and proper input and output impedance characteristics, we here at NAD do everything we can to get these things exactly right. We also include an MM Phono stage with precisely accurate RIAA equalization, high overload margins, extremely low noise, and an innovative circuit to suppress infrasonic noise that is present on all LPs – all without affecting bass response. Our line inputs can accommodate all kinds of analogue source components by offering ideal input impedance characteristics with linear ultra-low-noise buffer amplifiers to prevent any sonic degradation caused by inappropriate loading of the source device. We include a separate headphone amplifier with low output impedance and very high output voltage capability – enough to drive even high impedance studio monitor headphones. Low impedance line outputs that can connect to subwoofers extend the versatility of this well thought out amplifier. These are all details you can hear.
Forward Thinking
Modular Design Construction (MDC), an exclusive feature of NAD products, allows you to customise your NAD amplifier with additional capabilities and features, now or in the future. The two available MDC slots can accommodate a variety of upgrade modules including 4K video capable HDMI switching, additional Digital Inputs, additional Analogue and Phono Inputs, and one of the most advanced Hi-Res Audio multi-room wireless systems available, the BluOS music management system developed by Bluesound. BluOS connects to your network and is controlled via smartphone, tablet or desktop to manage your music collection and connect you to a growing list of high-quality streaming music services.
Instant Connection
As previously revealed, you can connect instantly to the C 368 with Bluetooth®, allowing you to stream music wirelessly from any Bluetooth-enabled device. The high performance aptX® codec is fully supported for true CD quality sound. Bluetooth can also be used to listen to other sources connected to the C 368 via wireless headphones. There is also a control app that allows your smartphone or tablet to control all functions of your C 368. Adding the optional BluOS Module provides access to your local area network via Wi-Fi or wired Ethernet connection and adds Hi-Res Audio streaming. The BluOS Module also makes the C 368 a single-zone streamer in a complete multi-room wireless music system that is fully compatible with BluOS-enabled music systems and wireless speakers. These are available in a variety of sizes and shapes to fit every room and extend the performance of your primary music system to create a warm ambience of sound in your home.
Sophisticated Power
In the last few years, NAD has moved away from the old-fashioned linear power supplies and Class AB output stages that waste energy, and have instead developed even better performing circuits based on switch mode power supplies and Class D output stages. Once thought to be inferior to traditional topologies, NAD’s advanced work in this area has created some of the best performing amplifiers regardless of basic design principle. These new designs are very linear over a wide bandwidth and provide consistent performance into all speaker loads, providing a dramatic advance over previous models.
Furthermore, the power supply is capable of 200 watts continuously and over 600 watts instantaneously to allow for short-term musical transients. It can operate with any AC mains voltage from 100 to 240 volts and provides pure DC power to all the various stages of the C 368. This highly efficient supply also provides near perfect regulation of voltage across a wide range of conditions and provides a solid noise-free foundation for the amplifying stages.
Using a customized version of the proven Hypex UcD output stage, the C 368 allows for massive power with nearly unmeasurable distortion and noise in the audible range. Every detail of this design has been carefully planned and perfectly executed to produce every last drop of performance.
KEY FEATURES
- 80W x 2 Continuous power into 8 or 4 Ohms
- Bluetooth ADP4 with aptX® supported
- MM Phono input
- Analogue line inputs
- SPDIF coax and optical inputs
- Speaker A, Speaker B
- Stereo or Bridge mode configuration
- Preamp/Subwoofer out
- Headphone amplifier
- MDC Slots for future upgrades
- IR Remote
- Smartphone Control App
- 12V Trigger in/out
- IR in/out
- RS-232 Serial port for control
- Control4, Crestron, RTI, URC, AMX, Savant, Elan certified
OVERALL SPECS
- Continuous Output Power into 4 Ω and 8 Ω (Stereo)
- >80W (at rated THD, 20-20kHz, both channels driven)
- Continuous Output Power into 8 Ω (Bridge Mode)
- 160W (at 20-20kHz, at THD 0.03%)
- IHF Dynamic Power
- 2 Ω 250W
4 Ω 200W
8 Ω 120W
- IHF Dynamic Power (Bridge Mode)
- 2 Ω 400W
4 Ω 350W
8 Ω 250W
- THD (20Hz – 20kHz
- <0.03% (250mW to 80W, 8 ohm and 4 ohm)
- Signal/Noise Ratio
- >98dB (A-weighted, 500mV input ref. 1W out in 8 Ω)
- Clipping Power
- >95W (at 1kHz 0.1% THD)
- Clipping Power (Bridge Mode)
- >170W (at 1 kHz 0.1% THD)
- Damping Factor
- >300 (ref. 8 Ω, 20Hz and 6.5kHz)
- Frequency Response
- ±0.3dB (20Hz-6.5kHz)
- Channel Separation
- >75dB (1kHz)
>70dB (10kHz)
- Sample Rate
- 192kHz/24bit
GENERAL
- Standby Power
- <0.5W
- Dimensions (W x H x D)
- 435 x 100 x 390mm (17 1/8 x 3 15/16 x 15 3/8)”
- Net Weight
- 7.8kg (17.2lb)
- Shipping Weight
- 10.1kg (22.3lb)
| The versatile amplifier for powering all your entertainment.
- Enjoy high-fidelity performance with 125 Watts per channel
- Power your bookshelf, floor-standing, in-wall, and in-ceiling speakers
- Stream everything you love with the Sonos app and AirPlay Connect your TV to create the ultimate entertainment system
- Amp is built to last and improve over time
Upgrade your wired speakers
Connect everything from your turntable and stereo to your wired speakers to enjoy vinyl, CDs, stored audio files, and streaming. You can even power outdoor speakers and expand your Sonos system to the backyard.
Amplify your TV experience
Enjoy stereo sound for shows, movies, and video games when you connect Amp to your speakers and TV. Wirelessly add a pair of Sonos One surrounds for immersive home theater.
Designed to keep cool
The rack-mountable design features a specially developed heatsink for optimized airflow and heat management.
Key Specs
Continuous Watts x Channel @ Ohms: 125 x 2 x 8
Input(s): Ethernet, HDMI, RCA
Audio
Continuous Watts x Channel @ Ohms: 125 x 2 x 8
Total Power Handling: 250 watts
Number of Channels: 2.1
Impedance: 8 ohms
Amplifier Class: D
Features
App-Controlled: Yes
Featured Streaming Services: Apple Music, Pandora, Spotify, YouTube
Wi-Fi Built-in: Yes
Dimensions: 2.52" x 8.54" x 8.54"
Weight: 4.6 pounds | The M3si integrated amplifier produces high quality sound, has an extensive range of useful inputs and offers high reliability, compact size and a fair price. With its strong 85 watts per channel, the M3si will drive a huge variety of appropriate loudspeakers. It has inputs for phono (MM), 4 line inputs and USB ‘B’ up to 24bit 96 kHz.
The M3si’s sound is effortless, clear and sweet. It projects wide and deep images and has plenty of power to deliver excellent dynamic range.
The M3si is unconditionally stable and will drive any appropriate loudspeaker with ease.
Although it is Musical Fidelity’s lowest price amplifier, it embodies our hallmark values of uncoloured, stress-free sound, outstanding technical performance and great value for money.
M3si In Brief
- 85WPC
- Excellent technical performance
- Preamp output
- Unconditional stability, will drive any loudspeaker
- Wide range of useful inputs
- including asynchronous USB and MM phono
- Excellent build quality and convenient size
Specifications
Power output: 85 W per channel into 8 ohm
THD(+ noise): <0.014 % typical, 20 Hz to 20 kHz
Signal to Noise Ratio: >98 dB ‘A’-weighted
Frequency Response: +0, –0.1 dB, 10 Hz to 20 kHz
Inputs: 4x Line Level RCA / Phono, 1x USB type ‘B’ connector - Asynchronous data stream at up to 24-bit/96kHz, 1x MM Phono input
Phono
Sensitivity (nominal): 3 mV (suitable for cartridges giving 1.5mV or more including high output MC types)
Signal / noise ratio: >70 dB ‘A’-weighted
Input impedance: 50 k ohm
Frequency response: RIAA/IEC ±1 dB, 20 Hz to 20 kHz
Dimensions - WxHxD (mm): 440 x 100 x 400
Weight (unpacked / packed): 9.2 kg/ 13 kg | Rupert Neve Designs' Shelford Channel, over a half century in the making, is the definitive evolution of Mr. Neve's renowned 80 Series channel module technology, updated and refined for the contemporary studio. The Shelford Channel is fitted with Rupert's latest Class A transformer-gain mic preamp, the best-of-the-classics Inductor EQ from the Shelford 5052, a punchy diode-bridge compressor, the alluring analog textures of variable Silk saturation, a state-of-the-art dual-tap transformer output stage with massive headroom, and double the operating voltage of vintage designs. Offering rich tonal options for making audacious statements with your music, along with precision-detented controls for recall, the Shelford Channel delivers the authoritative sonic essence of classic Rupert Neve designs, along with modern versatility.
Input stage and transformer-gain mic pre
Rupert Neve's first new Class A, transformer-gain mic preamplifier in over 40 years makes its debut in the Shelford Channel. Rupert has spec'd this preamp with a direct-coupled transformer input; gain is provided by the custom transformer itself. The proprietary input transformer, and its meticulous integration with the surrounding Class A input amplifiers, plays an outsized role in the Channel's immediately recognizable sonics: punchy and creamy-smooth, with excellent isolation and vanishingly low noise.
The Shelford Channel's front-panel hi-Z instrument input uses the same discrete Class A field-effect transistor with transformer topology as Rupert Neve Designs' acclaimed RNDI; for gain, however, it utilizes the new RN4012 input transformer directly into the mic preamp. This design provides astonishing clarity on hi-Z sources, with substantial low-end weight and silky-smooth high frequencies. The DI also gives you a passive thru output to feed a guitar or bass amp.

- Mic-DI/Line: switches between microphone/direct injection input and line input
- GND Lift: disconnects the audio signal ground from chassis earth
- Signal LED: green indicates Signal Present; red indicates imminent input stage clipping
- Mic Gain: 12-way precision rotary, controls gain from 0dB to 66dB in 6dB steps
- Trim: rotary switch provides further continuous gain adjustment of +/-6dB
- 48V: switch engages phantom power on the mic input
- Phase: inverts the polarity of the signal path (illuminates when engaged)
- HPF Freq: engages a 12dB/octave highpass filter, variable from 20Hz-250Hz

The best-of-the-classics inductor EQ
The Shelford Channel's EQ section is a 3-band, custom-tapped inductor circuit containing Rupert's favorite bands from his vintage equalizer designs. The low-frequency band is primarily based on the 1064 — acclaimed for its creamy, resonant bass. Unlike the 1064, though, the Channel gives you added dimension, punch, and control over your low end by letting you use the LF band as either a peaking or a shelving filter. The midrange band is based on the venerable 1073 and is perfect for sweetening instruments and vocals while nudging them forward in a mix. "Proportional Q" response also makes it ideal for attenuating problem frequencies. The high-frequency band is a hybrid design with the best of vintage and modern attributes. It should be noted that this EQ is in no way a clone; it's a decidedly modern design using components and techniques that simply did not exist in the 1970s — for instance, the use of capacitor-based topologies to achieve sonic richness and enhanced control.
- EQ In: engages all EQ frequency bands except HPF
- LF: adjusts up to 15dB of boost/cut at the selected low frequency
- Low Freq: 4-position rotary switch for selecting LF band corner or center frequency
- LF Peak: selects LF shelving (out) or peaking (in) mode
- Mid Hi Q: selects between a mid-band resonance of 2 (out) or 3.5 (in)
- Mid: adjusts up to 15dB of boost/cut at selected mid frequency
- Mid Freq: 6-position rotary switch selects center frequency of the midband EQ stage
- HF Peak: selects HF shelving (out) or peaking (in) mode
- 8K/16K: selects between an 8kHz (out) or 16kHz (in) center or corner frequency for HF band
- HF: adjusts up to 15dB of boost or cut at selected high frequency
The Super Diode-bridge Compressor
Like the Shelford Channel's inductor EQ and transformer-gain microphone preamp, the diode-bridge compressor/limiter is based on the topologies found in vintage Neve designs such as the 2254. It improves, however, on the early designs by the inclusion of full-wave rectification and a bevy of new control features. Although Rupert's vintage diode-bridge compressors were prized for their warm, punchy response, they were somewhat compromised by imprecise controls, attack-time inflexibility, low headroom, and high noise. The Shelford Channel's Super Diode-bridge Compressor delivers the attitude-packed, "in your face" sound of those classics, but with modern precision and flexibility — which makes it ideal on any source. Full Side-chain and stereo Link features are provided.
- Side Chain Insert Jacks (rear-panel): for fine tuning of compressor operation
- Comp In: engages the Channel's compressor-limiter section
- Threshold: sets level where the compressor "kicks in"
- Ratio: sets compression slope from 1.5:1 (minimal) to 8:1 (heavy)
- SC Insert: inserts rear-panel sidechain insert jacks into sidechain signal path
- HPF to S/C: routes highpass filter into the circuit that compressor uses to determine level
- Gain: for adding make-up gain to compensate for level attenuation lost to compression
- Timing: 6-position rotary adjusts attack/release speed of the compressor
- Link: links the sidechain control of multiple units for ganged or stereo operation
- Pre EQ: changes the order of compressor in the circuit chain
- Blend: mixes the dry and compressed signal for handy parallel compression
- Fast: speeds up both attack and release of the selected compressor time constant
Dual-tap transformer output
The Shelford Channel's output stage serves up the inimitable sound of Rupert Neve's classic designs while providing far more tonal versatility. The dual-tap output for the RN2042 square-core output transformer provides both high- and low-headroom outputs without compromising performance. The high-headroom tap takes advantage of the Shelford's higher-voltage design, delivering a pristine sound without non-linear output-stage coloration at high levels. The low-headroom tap, on the other hand, lets you drive the full voltage range of the Channel to accentuate this non-linear harmonic content — without clipping most pro interfaces. For vocals, drums, guitars, bass, and other instruments, this output lets you hit the transformer's sweet spot, which can inject life into a recorded performance in a way that other effects cannot.
The Silk and Texture controls
The Shelford Channel is packing a secret weapon the classics never had: its output transformer features the Silk Red/Blue and Texture controls from the Portico II Series that let you tailor the harmonic content and tonality of the output stage. By engaging these controls and sufficiently driving your output, you can dial in delectable 2nd- and 3rd-order harmonic distortion (that's the good kind) and saturation of the output transformer, imbuing your tracks with juicy rich thickness (think: 1073 on steroids) — with no danger of overloading the output stage. The Silk Red mode emphasizes harmonic content generated by the source's high frequencies; Blue mode, conversely, works off the low frequencies. The Texture knob controls the amount of added harmonic content. Disengage Silk, and your output is pristine and modern, while retaining Rupert's bigger-than-life transformer sonic signature.
The magical sound of Neve
Rupert Neve is an audio legend whose electronics designs defined the golden age of analog. Those of us at Sweetwater who have had the privilege of working on a Neve 8078 or its predecessors can attest to the fact that Neve's Series 80 consoles were indeed the pinnacle of hand-wired analog mixing desks. Mr. Neve has remained at the forefront of audio-circuit innovation for over half a century, and his current company, Rupert Neve Designs, continues to advance the state of the art with cutting-edge products that sound incredible and intelligently address the challenges of the digital age.
Rupert Neve Designs Shelford Channel Features:
- The definitive evolution of Rupert Neve's renowned 80 Series channel module technology
- A complete channel strip that delivers the essence of classic designs, along with modern versatility
- Input stage and transformer-gain mic pre
- Front-panel hi-Z direct input
- Best-of-the-classics inductor EQ
- Super Diode-bridge Compressor
- Dual-tap transformer output
- Silk and Texture controls
| Rupert Neve Designs RNHP is a state-of-the-art headphone amplifier. Now when Mr. Neve turns his attention to anything, you know it's going to be good. And spectacularly so. What the RNHP delivers is reliable, reference-grade amplification for any pair of headphones. Based on the headphone amp in the RND 5060 Centerpiece, the dedicated 24-volt design is spec'd with calibrated +4dBu Line, RCA, and 1/8" stereo inputs. Everything's housed in a road-tough, VESA-mountable steel chassis. The unit's effortless sonic performance and the ability to drive virtually any 'phones without compromise let you perform, mix, and savor your music with stunning clarity.
Rupert Neve Designs RNHP at a Glance:
- Unerring accuracy for better performances
- The benefits of near-zero-ohm output impedance
Unerring accuracy for better performances
You know you perform your best when your cans sound great - and that's where the RNHP can make a huge difference. Many integrated headphone amps are plagued with a non-linear frequency response, as well as noise, distortion, and skimpy headroom. To some, these units' lackluster sonic performance may seem "close enough for rock 'n' roll," however at Sweetwater, we believe there is the performer's subconscious response to consider. After all, if you're not inspired by what you're hearing, your performance will suffer.
The benefits of near-zero-ohm output impedance
Rupert Neve Designs spec'd the RNHP with near-zero-ohm output impedance to minimize frequency-based reactive-load impedance shifts - a problem unique to headphone monitoring. This ensures accurate sound reproduction, which is obviously important if you need to trust the decisions you make with headphones. You'll find the RNHP's unerring accuracy beneficial when you're using just one set of cans, and also when you're comparing a mix on multiple pairs of headphones.
Rupert Neve Designs RNHP Features:
- Reliable, reference-grade amplification for any pair of headphones
- Based on the headphone amp in the RND 5060 Centerpiece
- Effortless sonic performance
- The ability to drive virtually any headphones
- Dedicated 24-volt design
- Calibrated +4dBu Line, RCA, and 1/8" stereo inputs
- Near-zero-ohm output impedance minimizes frequency-based reactive-load impedance shifts
- Road-tough, VESA-mountable steel chassis
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