| Content | Rupert Neve Designs R6 500 Series chassis is a 6-space, steel rack enclosure that sports XLR, TRS, and DB-25 I/O to work with any studio setup. To ensure your modules are properly powered, the R6 has 150% of the required current, so you'll never be underpowered. It also has a built-in LED display to show current consumption and a double-shielded internal power supply that won't add any interference or unwanted noise to your signal. Rupert Neve is an audio legend. So you know when he designs a 500 Series chassis, it's top-shelf, all the way. Give your 500 Series modules the pampering they deserve with the Rupert Neve Designs R6 500 Series rack.
Genius in the details
With the Rupert Neve Designs' RND R6, there's genius in the details. The R6's double-shielded internal power supply was meticulously designed to avoid magnetic induction in any of its module slots. The power supply is a Switchmode type, and great care was taken to ensure that the frequencies are considerably outside the audible band. There's an internal jumper configuration that makes it easy to link slots in pairs. It's even fitted with variable-position screw holes that slide to accommodate modules that are slightly out-of-spec, which makes the insertion of modules quick and easy. Trust Sweetwater: when it comes to 500 Series racks, the RND R6 is as good as it gets.
Rupert Neve Designs RND R6 500 Series Rack Features at a Glance:
- Supplies 150% of the required current
- LED current consumption meter displays available current
- XLR, TRS, and DB-25 I/O
- Variable-position screw holes make for quick and easy module insertion
- Double-shielded internal power supply designed to avoid magnetic induction in module slots
- Switchmode PSU with frequencies considerably outside audible band
- Internal jumper configuration lets you link slots in pairs
| The Shelford Channel is built around Rupert Neve’s first new transformer-gain, class-A microphone preamplifier in over 40 years, a “best-of-the-classics” inductor EQ section, a tone-packed diode bridge compressor, the power of variable Silk saturation, a new dual-tap transformer output stage, and twice the operating voltage of vintage designs.
The Input Stage and Transformer Gain Mic Pre
Like Rupert’s designs from his time in Little Shelford , the Shelford Channel’s preamplifier uses a directly-coupled transformer input with gain provided by the custom transformer itself – a first in over 40 years for Rupert Neve. This new custom-designed input transformer, along with its careful integration with the surrounding class-A circuitry, is critical to the Channel’s bold and instantly recognizable character.
Conveniently, the Direct Input uses the same topology as the best-selling RNDI Active Transformer Direct Interface, providing astonishing clarity for high-Z instrument signals, with unparalleled low-frequency response and an incredibly smooth high end.
What is Silk?
The Silk & Texture circuit on the Shelford Channel allows you to fine-tune the amount (and type) of harmonic content in the output stage. This means your signal can be adjusted from quite transparent to settings that produce nearly 10x the amount of sonic color as Rupert’s vintage modules – and in two very unique modes. No matter what sound you’re looking for, Silk can help get you there.
The Dual Tap Transformer Output
Complementing the Silk circuit is the custom-designed output transformer, which uses Rupert Neve Designs’ unique dual-tap output topology. This offers both full-headroom (+26dBu) and -6dB outputs, allowing the engineer to drive the unit fully into classic transformer saturation without clipping converters and other devices later in the chain.
The “Best-Of” EQ
The Shelford Channel’s 3-band, custom-tapped inductor EQ was inspired by our favorite elements of Rupert’s vintage EQ designs. The low frequency band is designed to produce a creamy, resonant bass response similar to a vintage 1064 – but unlike the vintage modules, the LF band on the Shelford Channel can be used as either a shelf or a peak filter, adding punch, dimension, and control to your low end.
The midrange band is based on that of the 1073, ideal for sweetening vocals and instruments while bringing them forward in a mix, and its proportional “Q” response makes it well-suited for minimizing problematic frequencies. The high frequency band is a hybrid vintage / modern design, blending inductor circuitry with capacitor-based topologies to achieve vintage tones with enhanced control, with the shelf / peak corner switchable between 8K or 16K.
The Diode Bridge Compressor
Like the Inductor EQ and Transformer Gain microphone preamp, the Diode Bridge Compressor in the Shelford Channel is based on the same topologies found in Rupert’s vintage designs – but refined & adapted for the modern engineer.
What is diode bridge compression? Where the VCA compressor found in the Master Buss Processor provides unmatched clarity, the weighty, harmonically rich tonality of diode bridge compression can be essential in pushing key sources like vocals, electric guitars, bass and drums to the forefront of a mix.
By understanding the limitations of vintage units like the legendary 2254, painstaking effort was taken to reproduce the unique tone of these classics while improving the noise floor & accuracy, expanding inflexible time constants, adding full wave sidechain detection for improved dynamic response, and widening the range of threshold and ratio controls.
Delivering the powerful sound of these iconic designs with enhanced flexibility for the modern age, the Shelford’s diode bridge compressor is a dynamic tool equipped to make a statement on virtually any mix or track.
MIC PREAMP
INPUT IMPEDANCE
2200 Ohm
MAXIMUM INPUT
- +21.5 dBu from 150 Hz to 22 kHz
- +8 dBu 20 Hz to 22 kHz
NOISE
- Un-weighted, 22 Hz-22 kHz, source impedance 150 Ohm balanced.
- Main Out @ unity gain -100.9 dBu
- -6 dB Out @ unity gain -106.6 dBu
- +30 dB gain (Main Out) -91.37 dBu
- +66 dB Gain (Main Out) -64.1 dBu
- Equivalent Input Noise -121.37 dBu
FREQUENCY RESPONSE
+/-0.25 dB from 17 Hz to 45 kHz
DIRECT INPUT
MAXIMUM INPUT
8 dBu @ 20 Hz to 120 kHz
NOISE (MAIN OUTPUT)
-100 dBu (22 Hz to 22 kHz)
LINE INPUT
MAXIMUM INPUT LEVEL
+30.5 dBu 20 Hz to 30 kHz
TOTAL HARMONIC DISTORTION AND NOISE
- @ 1 kHz, +20 dBu output level, no load: Better than 0.002%
- @ 20 Hz, +20 dBu output level, no load: 0.05% Typical (2nd and 3rd harmonic)
NOISE (MAIN OUTPUT)
Un-weighted, 22 Hz - 22 kHz, source impedance 40 Ohm balanced, no load.
-101.1 dBu
FREQUENCY RESPONSE
+/- 0.25 dBu from less than 10 Hz to 110 kHz
-0.32 dB @ 120 kHz
MAXIMUM OUTPUT LEVEL
+26 dBu @ 16 Hz to 20 kHz
TOTAL HARMONIC DISTORTION AND NOISE WITH SILK ENGAGED
RED
- MIN TEXTURE @ 100 Hz, +20 dBu input level, no load: 0.0131%, mostly 3rd harmonic (typical)
- MAX TEXTURE @ 100 Hz, +20 dBu input level, no load: 1.66%, mostly 2rd harmonic (typical)
BLUE
- MIN TEXTURE @ 100Hz, +20 dBu input level, no load: 0.0079%, mostly 3rd harmonic (typical)
- MAX TEXTURE @ 100Hz, +20 dBu input level, no load: 0.941%, mostly 2rd harmonic (typical)
HIGH PASS FILTER
- Continuously variable swept frequency from 20 Hz to 250 Hz.
- Slope: 12 dB/Octave
EQ NOISE
Un-weighted, 22 Hz-22 kHz: -92 dBu
SIGNAL PRESENT
Illuminates GREEN when input stage signal level reaches -20 dBu
OVERLOAD INDICATOR
Illuminates RED when input stage signal level reaches -23 dBu
DIODE BRIDGE COMPRESSOR
- NOISE (BW 22 Hz – 22 kHz)
- 0 dB Makeup Gain: -84.5 dBu
- +20 dB Makeup Gain: -64.2 dBu
TIME CONSTANTS
- Measurements taken represent full range achievable between 1.5:1 Ratio and 8:1 Ratio setting.
- 0 dBu I/P 1kHz Burst Tone used for all recorded measurements.
- Fast (TC1): Attack 180µS — 1.8mS // Release 100mS – 150mS
- MedFast (TC2): Attack 750µS – 5.25mS // Release 160mS – 250mS
- Med (TC3): 2.7mS – 18mS // Release 350mS – 525mS
- MedSlow (TC4): 4.6mS – 38mS // Release 600mS – 1 S
- Slow (TC5): 11mS – 72.5mS // Release 800mS – 1.25 S
- Auto (TC6): 5.75mS – 35.5mS // Release T1 400mS – 850mS, T2 TBD
- “Fast” Mode Multiplier: Modifies aforementioned TC’s by 70% of original value
PRODUCT DIMENSIONS
19” (48.3 cm) x 10.5” (26.7 cm) x 1.75” (4.4 cm) | 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 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
| Discover the PM7000N, the first Marantz fully discrete, current feedback integrated Hi-Fi amplifier with HEOS Built-in technology. The ideal choice for audiophiles that require Marantz musical sound and music streaming, the PM700N includes high-grade audio components, current feedback HDAMs, a toroidal transformer, and a high-speed instantaneous current power supply. The versatile PM7000N features multiple analog and digital inputs, and decodes digital audio files ALAC, FLAC and WAV lossless files up to 24-bit/192-kHz — plus, DSD 2.8MHz and 5.6MHz tracks for high-resolution listening. Stream your favorite music wirelessly, and control the amplifier with leading voice agents Apple Siri, Google Assistant, and Amazon Alexa.
Features
- Power to suit your audio preference: 2ch fully discrete current feedback integrated Hi-Fi amplifier; 60W per channel (8-ohm, 20Hz – 20kHz)
- Wide range of connectivity:
- Four analog inputs, one analog output, one coaxial input, two optical digital inputs and one USB-A for high-resolution audio files
- Marantz proprietary HDAM-SA3 circuit: Wider dynamic range with lower distortion for the output stage
- Flexibility for all configurations: Tone control to tune sound to your exact specifications and dedicated subwoofer output for evenly dispersed bass, no audible peaks or dips
- Newly designed electric volume circuit: Use the latest volume control IC to realize better channel separation, dynamic range, and distortion-reduction
- Play vinyl with exceptional clarity: Integrated phono input with newly designed FET input stage to improve signal purity and sound
- Premium Marantz SPKT-1+ speaker terminals: Improved connection to speakers
- Stream music from your favorite sources: Play songs from TuneIn, Internet Radio, Pandora, Spotify, SiriusXM, Amazon Prime Music, TIDAL and more via AirPlay 2, Bluetooth and the HEOS app (music streaming services may vary by region)
- Speak your commands: Supports Amazon Alexa, Google Assistant and Apple Siri voice agents for seamless voice control
- High-performance, high-resolution audio playback: Ability to decode high-resolution audio ALAC, FLAC and WAV lossless files up to 24-bit/192-kHz — plus, DSD 2.8MHz and 5.6MHz tracks for high-resolution listening
- Built-in Bluetooth and Wi-Fi with 2.4GHz/5GHz dual band support: Improved network stability even in Wi-Fi crowded homes
- Works with your TV remote: Program the PM7000N to work with your TV remote and easily adjust volume up, volume down, mute and source selection
Specifications
Inputs: RCA line x 3, RCA MM phono x 1, digital coax x 1, optical x 2, USB A x 1, Ethernet
Phono input sensitivity: 2 mV @ 47 kOhm
Phono SNR: 87 dB
Outputs: Tape out, subwoofer out, headphone out, speaker A and B
Power output (8 ohm / 4 ohm): 60 W / 80 W
Damping factor: 100 and over
Dimensions: 17.3" x 14.9" x 4.9"
Weight: 23.8 lb
| 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
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