| Content | 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
| Packed with ultra-fast, rock-solid performance, the Behringer S32 32-channel digital snake system bridges the gap between your band, your FOH engineer, and your audience. With the S32, you get 32 remote-controllable Midas-designed preamps and 16 analog, servo-balanced XLR returns at the stage end, and it's all piped through a single, convenient Cat 5e cable, thanks to integrated SuperMac technology from Klark Teknik. In other words: no more bulky analog snake! So step up to the digital age — order your Behringer S32 32-channel digital snake system from Sweetwater today!
AES50 networking capability provides compatibility with many digital mixers
When Behringer first developed their S32 digital snake system, they intended it to go hand-in-hand with their powerful X32 digital mixing system. But limiting such a convenient and affordable digital snake to the X32 alone would have been a shame, which is why Behringer designed it around the strict guidelines established by Klark Teknik. The result is an affordable digital snake that's completely compatible with any digital console that sports an AES50 digital Ethernet connection. So if you're running a Midas or Behringer digital mixing board, if it's got an AES50 Ethernet port on it, if you've got an S32 digital snake, you're never more than a single connection away from your stage box.
Remote-controllable preamps make setup fast, easy, and painless
Even if you try to get a jog in every day, no one likes having to run up to the stage every time you have to make an adjustment to your stage box. Thanks to the Behringer S32 digital snake system's remote-controllable preamp design, those back-and-forth cross-venue dashes are a thing of the past. Using the Klark Teknik SuperMAC protocol, your S32 will show up in your digital mixer's OS, giving you the control you need over your pres, right from the front of house position. And by the way, these preamps are the exact same high-quality Midas-designed preamps found in the X32 console, so you know you're getting quality sound with low noise and tons of headroom.
Total integration with Behringer's P-16 personal monitoring system
Streamlined, affordable, and super-easy-to-use, everyone's raving about Behringer's Powerplay P16 personal monitoring systems. When you add a Behringer S32 digital snake system to your PA rig, you're not just getting a great set of remote-controllable preamps and ditching tons of bulky cable, you're ready to add an advanced personal monitoring system directly inline with the rig you already have. That's because your S32 digital snake comes equipped with Ultranet connectivity, which provides your Powerplay P16-M monitor controllers with a digital split straight from the stage box.
Behringer S32 32-channel Digital Snake System Features:
- Simple, flexible, and affordable digital snake system that works with any AES50 network-ready digital console
- 32 x fully programmable and remote-controllable Midas-designed mic preamps give you exceptional sound, right from the stage
- 16 x analog, servo-balanced XLR outputs let you send complete monitor mixes to the stage
- AES50 network ports featuring Klark Teknik SuperMac technology, providing you with ultra-low latency digital audio that's in-ear compatible
- Up to 328' of networking capability via a single lightweight CAT-5e cable (not included)
- Dual AES50 ports let you cascade multiple S32 units, without a merger or a router
- Precise LED metering plus 7-segment displays let you keep a close eye on your levels
- Ultranet connectivity for Behringer's Powerplay P16 Personal Monitoring System is perfect for In-ear applications
- Dual ADAT outputs for use in splitter mode and stand-alone digital multicore applications
- MIDI In/Out for bi-directional communication between FOH console and on-stage MIDI devices
- USB connector for system updates via PC
- Planet Earth switching power supply for maximum flexibility, noise-free audio, superior transient response plus low power consumption for energy saving
- Durable yet compact, all-steel 3U rack-mount chassis provides flexible mounting
| MARANTZ NR1200 STEREO RECEIVER
2ch Slim Stereo Streaming Receiver with HEOS Built-in
Indulge in high-resolution sonic perfection with the Marantz NR1200 two-channel slim stereo receiver that powers detailed, high-fidelity audio from a compact chassis. At half the height of a traditional receiver, the NR1200 drives impeccable sound for your movies, shows, hi-fi audio and more. The NR1200 supports the latest HDMI connectivity with its 5 inputs, each one supporting HDCP 2.3, 4K Ultra HD 60Hz video, HLG and more. Stream music from leading music services and control the NR1200 with voice control compatibility via Amazon Alexa, Google Assistant, and Apple Siri.
Features
- Slim profile that’s half the height of a traditional AV receiver: Delivers exceptional performance and sound quality
- Power to suit your audio preferences: Two-channel discrete power amplifier with separate L/R power amp circuit and power transformer with 75 W per channel (8-ohm, 20 Hz – 20 kHz, 0.08% THD)
- Hi-Fi construction and performance: Engineered with dedicated Hi-Fi parts for two-channel Hi-Fi performance, including custom-designed power capacitors, sound parts exquisitely tuned by sound masters and dual DAC circuit design
- Versatile HDMI ARC connectivity: 5 HDMI inputs with full HDCP 2.3 support plus one HDMI out with ARC support for single cable connection with your television
- Flexibility for all configurations: Speaker A/B, tone control to tune the sound to your exact specifications and dedicated dual subwoofer output for evenly dispersed bass, and no audible peaks or dips
- AM / FM tuner: Hear all of your favorite radio stations with exquisite detail
- Play vinyl with exceptional clarity: Integrated phono input that easily connects to your turntable
- Drive an exceptional gaming experience: Auto Low Latency Mode (ALLM) ensures Xbox One users have a more responsive and immersive gaming experience when connected with select TV models that also support ALLM
- Smart TV connectivity: Control the NR1200 with your TV remote, and HDMI-CEC support for seamless pass-through of the latest picture and audio coding from your TV to the stereo receiver
- 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
- HEOS Built-in: Enjoy more flexible music streaming in one room or many
- Stream your favorite music from popular services: Play music on Spotify, Pandora, TuneIn, Deezer and many others via Bluetooth, AirPlay 2 or the HEOS Built-in app
- Integrate with your home-network: Built-in Wi-Fi with 2.4GHz/5GHz dual band support (dual antenna)
- Speak your commands: Supports all major voice control agents and streaming services for seamless control
Specifications
NETWORK
- HEOS multiroom and streaming, Wi-Fi, Bluetooth, AirPlay 2
- FLAC / ALAC / WAV up to 192/24
- DSD up to DSD5.6
- TuneIn internet radio
- Spotify Connect, Deezer, Tidal, Napster, Pandora, Sirius XM
HDMI
No. of inputs: 5
No. of outputs: 1
Supported formats / features:
- 4K 60 Hz 4:4:4, HDCP 2.3
- Enhanced ARC
- HDR / HLG
- 3D signal pass-through
- HDMI pass-through in stand-by
OTHER INPUTS AND OUTPUTS
Audio
Analog in: 3
Phono (MM): 1
Digital in (optical / coax): 1 / 1
USB (iPhone, iPod): 1
Multichannel pre-out: 2.2
Subwoofer out: 2
Power output (8 ohm / 6 ohm): 75 W / 100 W
Dimensions (WDH): 17.3" x 14.9" x 4.1"
Weight: 18.1 lb | 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
| With a big, bold preamp, a swept high-pass filter and the powerful saturation control of variable Silk, the 511 combines legendary Rupert Neve tone with 500 Series value.
What is Silk?
One of the key features of the 511 is the Silk / Texture control. The Silk circuit was initially developed for the original Portico series mic preamplifiers, and was only a single switch – on or off – that added a specified amount of musical, pleasing harmonic saturation to the unit’s output stage.
Taking this concept one step further, the Texture knob is designed to adjust the actual amount of harmonic content from the source material.
So how does it work? By reducing negative feedback across the output transformer and adjusting this feedback’s frequency response, the Silk / Texture circuit provides the sweet, musical saturation found in Rupert’s legendary vintage designs – but with complete & precise control over the amount of classic tone you want.
NOISE
- Measured at Main Output, un-weighted, 22 Hz - 22 kHz, source impedance 150 Ohm balanced. Noise performance can vary depending on the 500 series and / or interference from stray magnetic fields.
- Unity Gain: Better than -103 dBV
- Gain @ +66 dB: Better than -60 dBV
- Equivalent Input Noise: -125 dB
FREQUENCY RESPONSE
- Main output, no load.
- +/- 0.1 dBu from 10 Hz to 31.5 kHz
- -2.6 dB @ 120 kHz
MAXIMUM OUTPUT LEVEL
+23 dBu
TOTAL HARMONIC DISTORTION AND NOISE, NO SILK
- @ 1 kHz, +20 dBu output level, no load: Better than 0.0025%
- @ 20 Hz, +20 dBu output level, no load: 0.025% Typical (2nd and 3rd harmonic)
TOTAL HARMONIC DISTORTION AND NOISE WITH SILK ENGAGED
- @ 100 Hz, +20 dBu input level, no load.
- TEXTURE @ min: 0.015%, mostly 3rd harmonic typical
- TEXTURE @ max: 2%, mostly 2rd harmonic typical
GAIN
- Unity up to +66 dB in 6 dB steps.
- Trim continuously adjustable from -6 dB to +6 dB.
PHANTOM POWER
Supplied by the 500 series rack power supply. Switch selectable on faceplate.
HIGH PASS FILTER
- Continuously variable swept frequency from 20 Hz to 250 Hz.
- Slope: 12 dB/Octave
POWER REQUIREMENTS
@ +/-16VDC, 100mA | The vintage EQ tones you know & love.
The 551 is the only equalizer for the 500 Series actually designed by Rupert Neve. Featuring 3 bands of EQ inspired by Mr. Neve’s most prized vintage designs, along with custom-wound inductors, transformers and class-A gain blocks, the 551 brings the thick, powerful lows and sweet highs of Rupert’s classics to the 500-Series format.
The “Best-Of” EQ
The 551’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 551 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. The High Pass filter is a 12dB/octave design with a fixed 80Hz frequency, and can be used in tandem with the low frequency EQ to add low-end presence without clouding the source material.
As with Rupert’s most prized classic designs, each EQ section uses low-feedback, class-A discrete electronics to prevent low-level artifacts and harshness from detracting from the tonal shaping. However, this new circuit is a decidedly modern design with updated techniques and components that were simply not available 50 years ago, and is definitely not a “clone”.
What Are Inductors?
Inductors are wires wound around a coil that provide a form of frequency-dependant resistance. When they saturate, they bring out beautifully musical harmonics that give your tracks the smooth, polished sound that has made Rupert’s consoles and equipment so desirable for over fifty years. This is what makes them different from capacitor-based EQ designs, which do a great job at surgical equalization. But inductors provide the tone.
While it is certainly possible to create a functioning EQ using off-the-shelf inductors, we choose to use our own custom inductors for the 551. This attention to detail in controlling variables such as the winding and core materials in relation to the surrounding circuitry allows the 551 to capture the vitality and personality of Rupert’s classic designs.
NOISE
- Measured at Main Output, un-weighted, 22Hz-22kHz, source impedance 40 Ohm balanced.
- Better than -102 dBV
FREQUENCY RESPONSE
Main output, no load: +/- 0.1 dBu from 20 Hz to 31.5 kHz, -1 dB @ 120 kHz
MAXIMUM OUTPUT LEVEL
23.25 dBu
TOTAL HARMONIC DISTORTION AND NOISE
- @ 1 kHz, +20 dBu output level, no load: Better than 0.0025%
- @ 20 Hz, +20 dBu output level, no load: 0.13% Typical (2nd and 3rd harmonic)
HIGH PASS FILTER
- -2.7 dB @ 80 Hz
- Slope: 12 dB/Octave
NOISE
- Measured at Main Output, un-weighted, 22 Hz - 22 kHz, source impedance 40 Ohm balanced.
- Better than -94 dBV
FREQUENCY RESPONSE
Main output, no load: +/- 0.25 dBu from 20 Hz to 45 kHz, -2 dB @ 120 kHz
MAXIMUM OUTPUT LEVEL
23 dBu
TOTAL HARMONIC DISTORTION AND NOISE
- @ 1 kHz, +20 dBu output level, no load: Better than 0.009%
- @ 20 Hz, +20 dBu output level, no load: 0.13% Typical (2nd and 3rd harmonic)
POWER REQUIREMENTS
- 120mA on +16VDC
- 110ma on -16VD
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