| Content | Simple and elegant, the 5211 is the natural evolution of what is arguably the most famous gear in audio recording history: Rupert Neve’s microphone preamps.
With two channels of the classic tone you know and love, 72dB of gain, sweepable high-pass filters for precise control, and the power of Mr. Rupert Neve’s dual-tap transformers with variable Silk saturation, the 5211 delivers a versatile, flattering, and uncompromising front end for any signal path. In short, it’s everything a mic preamp should be.
What is Silk?
One of the key features of the 5211 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. And when the level is driven to the edge of its headroom, the Silk effect is multiplied.
Why a -6dB Output?
Complementing the Silk circuit is the custom-designed output transformer from the renowned Shelford Channel, 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.
Unlike the Shelford Channel, which uses a mic input transformer for a more vintage topology, the 5211’s input is fully transformerless, maximizing signal clarity direct from the microphone. Combined with the more extreme saturation from both variable Silk and the custom output transformer’s lower-headroom tap, the 5211 is capable of producing tones ranging from thick & warm to breathtakingly delicate & clear. It’s the best of old and new alike.
MAXIMUM INPUT LEVEL
@ 1 kHz: +26 dBu
NOISE
- Un-weighted, 22 Hz - 22 kHz, 150 Ohm input termination
- Line Out (Unity Gain): -104 dBV, -101.9 dBu
- -6 dB Line Out (Unity Gain): -109 dBV, -107 dBu
- Line Out (+30 dB Gain): -98 dBV, -96 dBu
- Line Out (+66 dB Gain): -66 dBV, -64 dBu
EQUIVALENT INPUT NOISE (EIN)
-128 dBV, -126 dBu
FREQUENCY RESPONSE
-0.2 dB at 10Hz, -2.9 dB at 120kHz
MAXIMUM OUTPUT LEVEL
- 1 kHz: +26.5 dBu
- 20 Hz to 30kHz +26 dBu
TOTAL HARMONIC DISTORTION AND NOISE (WITHOUT SILK)
- 1 kHz, +20 dBu O/P level, no load 0.0015%, typical
- 20 Hz, +20 dBu O/P level, no load less than 0.02%, typical
TOTAL HARMONIC DISTORTION AND NOISE (WITH SILK ENGAGED)
- TEXTURE @ min, 100 Hz, +20 dBu O/P level, no load: 0.03%, mostly 3rd harmonic
- TEXTURE @ max, 100 Hz, +20 dBu O/P level, no load: 1.5%, mostly 2nd harmonic
POWER CONSUMPTION
35 W (Max)'
PRODUCT DIMENSIONS
19” W x 1.75” H x 7 ⅝” D
SHIPPING WEIGHT
11 lbs. (5 kg)
SHIPPING DIMENSIONS
23” W x 15” D x 7” H (58.4cm W x 38.1cm D x 17.8cm H) | Condition: Item is subject to minor cosmetic imperfections. Packaging may be in poor shape. The item displayed in the images may not be the actual item you receive.
- Converts balanced line level signals to unbalanced
- Stereo signal path with set & forget level control
- Transformer isolated to eliminate hum & buzz
- J-Iso features Jensen™ transformers for optimal signal path
The Radial J-Iso and Pro-Iso are stereo line isolators designed to convert a professional +4dB line level balanced signal to an unbalanced -10dB consumer level device. This enables you to take the balanced output of a mixer and feed a consumer level recorder or audio input on a computer.
J-Iso Part # R800-1025: The J-Iso employs a premium Jensen transformer for optimal signal transfer to minimize distortion and artefact. Full bandwidth performance makes the J-Iso ideal for music production.
The passive design begins with 100% discrete components throughout. A set & forget level control lets you attenuate the input signal to prevent it from overloading the destination device. Output connections include a stereo pair of ¼" connectors, a set of RCAs and a mini 3.5mm (1/8") for interfacing to a mini recorder or lap-top computer. Transformer isolation helps eliminate hum and buzz caused by ground loops while eliminating stray DC currents from flowing.
Construction begins with 14 gauge steel throughout utilizing Radial's unique bookend construction. This creates a protective zone around the connectors and controls for added durability. The steel construction also assists by shielding the transformers from outside magnetic fields. Inside, the J-Iso features an innovative I-beam skeletal insert that makes it virtually impossible to torque the PC board. This reduces potential stress which could cause premature solder joint failure.
Designed for full range applications, the J-Iso combines exceptional signal handling with the type of durability that has made Radial famous. Signal Processors | Imagine having the power and flexibility of the OP-Z sequencer available to any other music equipment. Now you can, with the new oplab module - the magic link between OP-Z and the rest of the world. The oplab module is the first hardware expansion module for OP-Z. once mounted in the back of your OP-Z, you can use it to connect to any equipment using standard cv and gate, such as the pocket operator modular or any other modular system. It features three cv outs and one gate out, all programmable and playable from OP-Z. have your wall of modules sequenced from the palm of your hands. Use the po sync out to unleash the power of your regular pocket operators and have them play in sync with the rest of your setup. Even connect standard midi devices, using midi over 3.5 mm jack or the included midi over din adapter cable. Oplab features both midi in and out ports as well as trig in and out for other synthesizers and sequencers. | The product that started it all for Empirical Labs. Born of founder Dave Derr’s love of classic compressors like the 1176, LA-2A and Gain Brain (among others), the Distressor incorporates his favorite sonic characteristics of these, along with other unique and interesting features that have made it a staple for audio engineers all over the world. With over 28,000 units in the field, it’s safe to say that the Distressor is one of the best selling high end compressors of all time… if not THE best selling. A prominent recording engineer recently wagered that there probably was not a top 40 record made in the last five years that didn’t have at least one Distressor on it.
Besides providing a wide range of control and a unique feature set, the Distressor offers a warm, vintage sound by using a custom designed gain control circuit. This “warmth” or “vintage sound” has become a major issue in the last few decades, as the super clear and linear digital technology does next to nothing to soften “harsh” sounds, nor emphasize the bass frequencies in music sources. Conversely, older analog tape, vinyl records and tube equipment could not be prevented from coloring the sound, often to the frustration of recording engineers. However, many people now realize that this coloring can be extremely pleasant and musical. Digital technology is often referred to as “cold” and “brittle” among other terms (although we prefer “unforgiving”).
Unique Compression Curves
All eight of the Distressor’s curves are unique and distinctive, from the 1:1 mode that simply warms up signal with low order harmonics without intentional compression, to the “Nuke” setting – a brick wall limiting curve that shines on live drum room mics. Each curve has its own personality and several actually use different circuitry, and are effectively different compressors. Most exceptional is the 10:1 “Opto” ratio which uses separate detector circuitry to emulate the oldest (and valued) “light controlled” devices, such as the LA-2A.
Distortion (Color) Modes
Another large part of the Distressor’s personality and power derive from three modes that color the signal, even without compression. These extended audio modes were designed to allow emulation of some very old and expensive vintage compressors & limiters, and let the Distressor deliver a classic “knee” sound all its own by providing user programmable, warm harmonic distortion. In addition to the basic distortion mode, Distort 2 emphasizes tube-like 2nd order harmonics, while in Distort 3 setting the distortion becomes dominated by 3rd harmonics more closely resembling tape. Two HP filters – one in the audio path, one in the detector path – are also available to help with low frequencies that can cause pumping and breathing.
Go Stereo
For many Distressor owners, one is never enough – in fact, one extremely successful engineer has twelve of them! For those who want (at least) a stereo pair, ELI offers the EL8-S, a pair of Distressors that are matched at the factory, and come with the cables you need to lock them together.
- Frequency Response – 2 Hz to 160 kHz in clean audio mode (+0, -3 dB). Response is shaped in distortion modes (Dist 2, Dist 3).
- Dynamic Range – 110 dB from max. output to min. output in 1:1 mode. Greater than 100 dB signal to noise in distort 3 mode.
- Distortion – ranges between .02% and 20% depending on distortion mode and release times set on front panel.
- I/O – DC Coupled input and outputs.
- Time Constants – Attack range 50uS – 50mS. Release range .05 sec to 3.5 seconds, normal modes and up to 20 seconds in 10:1 opto mode. Time constants are dependent on ratio.
- Power Consumption – 15 Watts Max.
- Metal Chassis – single height 1.75″ high, 10″ deep, 19″ wide.
- Shipping info – 24.2 lbs Stereo pair. Stereo Pair box dimensions 22.5″ x 18.5″ x 6 1/4.
| This item is in excellent working condition and barely used.
The ZHA-4 splits a single stereo headphone output into four separate powered 1/8” headphone jacks, each with their own volume and mute control. Perfect for bands, podcasts, productions, and more.
Two AA batteries provide hours of portable power. For longer sessions, connect the USB-C port to a portable battery or plug directly into the wall.
What’s in the Box?
- ZHA-4 Handy Headphone Amplifier
- AA Batteries (x2)
- Stereo Mini Audio Cable (19” / 50cm)
- Quick Guide
Please Note: The item displayed in the images may not be the actual item you receive. | FEATURES
- World-class, transformer-coupled preamp, compressor, and DI
- Gain: 0 - 66dB in 6dB increments
- Compressor: Single-knob opto-coupler compressor with 2:1 ratio
- Blend: Determines balance of mic and DI inputs
- Instrument gain: 0 - 30dB on instrument input
- 48V phantom power
- Silk: Adds nostalgic warmth and presence when engaged
- Instrument input: Front-panel TRS input and passive-through for Hi-Z sources
- Polarity reverse
- Threshold: When signals exceed threshold level, gain is reduced at a controlled 2:1 ratio with fixed attack and release time constants
- Indicators: Signal presence and clipping on both mic and DI signals, as well as compressor activation.
TECHNICAL SPECIFICATION
Rupert Neve Designs Portico 517: 500 Series Mic Pre / DI / Comp
- Frequency Response: Main Output, no load, -0.2dB @ 10Hz -3dB @ 160kHz
- Noise measured at main output, unweighted, 22Hz - 22kHz, terminated 150 ohm: Gain at unity: better than -100dBu; gain at 66dB: better than -62dBu Equivalent Input Noise: better than -128dBu, noise factor 1.5dB
- Maximum output level from 20Hz to 40kHz: +23dBu
- Total Harmonic Distortion and Noise: @ 1kHz, +20 dBu output: Main Output: Better than 0.001% @ 20Hz, +20 dBu output: Main Output: Better than 0.002% Silk Engaged: Better than 0.2% Second harmonic
- Crosstalk: Measured channel to channel: Better than -90dB @ 15kHz.
- Phantom Power: +48 Volts DC +/- 1%
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