| Content | 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) | Rackmount PG-X Power Conditioner with PG-90 Filtering Technology, Panasonic and Wima capacitors, eight rear switched, filtered and surge protected outlets, one front-panel switched convenience outlet and USB port for device charging.
Your gear deserves the best power, and we took great care in making sure the PG-X delivers just that — thanks to PG-90 Filtering Technology. In testing, this has provided an average of 90% of noise filtering, as opposed to the typical average of 76% found in other power conditioners at the same price point.
Confidence Inspiring Power
There’s nothing worse than scoring that “must-have” piece of gear, only to find that it’s noiser than should be expected, missing high frequency detail, or even worse — having it fried by power surges!
Black Lion Audio has been trusted for years for modifying the best gear and making it even better, and that’s what it took to create the PG-X: taking industry-standard designs, and improving them to the point of peak performance.
After creating the original PG-1, Black Lion Audio knew that plenty of professionals on a smaller budget felt left out, as some features might not be as important as an economy price-point. The PG-X was built with this in mind, while still providing best-of-class power conditioning!
High-end Filtering
Your gear deserves the best power, and we took great care in making sure the PG-X delivers just that — thanks to PG-90 Filtering Technology. In testing, this has provided an average of 90% of noise filtering, as opposed to the typical average of 76% found in other power conditioners at the same price point.
Professional Power
The PG-X features a bank of eight switched, filtered and surge protected outlets on the back panel. On the front panel, the PG-X sports one unswitched convenience outlet and a USB port for device charging.
It takes more than a few rack-mounted outlets to inspire true confidence in your power conditioner, and that’s where the PG-X delivers: best-of-class power filtering!
- Protects your gear from power-spike damage
- Provides clean, well-regulated power for optimum performance
- Features PG-90 Filtering Technology
- Top-drawer components and design for superior power and noise filtering
- Built with premium Panasonic and Wima capacitors
- Rugged 1U rackmount chassis
- 8 switched, filtered, and surge-protected outlets on rear panel
- 1 filtered convenience outlet on front panel
- USB port on front panel
Type: Rackmount
Number of Outlets: 1 x Front, 8 x Rear
Output Current: 15A
USB: 1 x Type A
Features: High frequency noise filter
Rackmountable: Yes
Power Source: Fixed AC cable
Height: 1.7″
Width: 19″
Depth: 9.8″
Weight: 3 lbs. | 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%
| FEATURES
- The industry-standard tabletop looper, updated and enhanced
- Class-leading sound quality with 32-bit AD/DA and 32-bit floating-point processing
- Five simultaneous stereo phrase tracks with dedicated controls and independent volume faders
- Input FX and Track FX sections, each with four simultaneous effects and four quick-access banks
- Customizable FX and Track buttons for each phrase track
- Massive onboard effects selection with 49 Input FX types and 53 Track FX types, including new Harmony, Electric FX and many others
- Ultra-durable faders with longer throw for more precise adjustment
- Mark Back function provides enhanced undo/redo flexibility while performing
- Two XLR mic inputs with phantom power, two stereo line input pairs, and three stereo line output pairs
- 99 memories, each containing five phrase tracks, custom effects and playback settings, control assignments and more
- Synchronize your loops with over 200 onboard rhythm patterns and 16 drum kits
- Deep MIDI control support
- Two external control jacks, each with support for up to two footswitches or an expression pedal
- USB for data backup, phrase import/export with BOSS Tone Studio and pattern import with the RC Rhythm Converter
TECHNICAL SPECIFICATION
Boss RC-505MK2 Tabletop Loop Station
- Sampling Frequency: 44.1 kHz
- AD/DA Conversion: 32 bits
- Processing: 32-bit floating point
RECORDING/PLAYBACK
- Number of Tracks: 5
- Data Format: WAV (44.1 kHz, 32-bit float, stereo)
- Maximum Recording Time: Approx. 1.5 hours (1 track), Approx.13 hours (total of All memories)
- Rhythm Type: 200 types or greater
- Rhythm Kit: 16 types
EFFECTS
- INPUT FX: 49 types
- TRACK FX: 53 types
- MASTER FX: 2 types
- Memory: 99
- Display: Graphic LCD (128 x 64 dots, backlit LCD)
CONNECTORS
- MIC IN 1, 2 jack: XLR type (balanced, phantom power: DC 48 V, 10 mA Max
- INST IN 1, 2 jacks, MAIN OUT jacks, SUB OUT 1, 2 jacks: 1/4-inch phone type
- PHONES jack: Stereo 1/4-inch phone type
- CTL1,2/EXP1 jack, CTL3,4/EXP2 jack: 1/4-inch TRS phone type
- USB port: USB B type
- MIDI (IN, OUT) connectors
- DC IN jack
- Power Supply: AC adaptor
CURRENT DRAW
- 1.0 A (with phantom power)
- 0.9 A (without phantom power)
- Dimensions: 16-9/16" W x 9-1/4" D x 2-11/16" H
- Weight: 4 lb.
| The Suhr Reactive Load delivers a simple solution to capture all of the warmth, and dynamics of your sound, without the hassle of miking a speaker cabinet during a live or recorded performance.
The Reactive Load takes the place of your speaker cabinet in your signal chain. It provides an 8Ω load for your tube amplifier (maximum 100 watts), and produces a balanced and unbalanced signal that interfaces with recording devices, effects, and power amplifiers.
The Suhr Reactive Load is the perfect link between your amplifier and computer audio recording interface. You can use the Reactive Load with your existing library of speaker impulse responses (IR) for the most realistic direct recording experience possible.
Traditional resistive load boxes will safely load your amplifier, but they also alter the tone, dynamics, and response of your amplifier. Real speakers do not have a fixed resistance across the entire frequency spectrum. Real speakers are reactive.
The impedance curve of the Reactive Load has been painstakingly tuned to react like a speaker. Your amp will never know the difference.
The Reactive Load is dedicated to being the absolute best load box possible with zero compromises, and therefore does not include speaker emulation. You can use the Reactive Load with your speaker-sim or impulse response of choice, and benefit from the natural response, dynamics, and touch sensitivity of your amp.
The Suhr Reactive Load features a balanced or unbalanced line level output. The INPUT is optimized for the 8 ohm output of your amplifier and the THRU jack can be connected to a physical speaker cabinet. If a physical cabinet is connected to the THRU jack, the Reactive Load’s internal load is bypassed and the amp will see the load of the physical cabinet.
SPEAKER INPUT IMPEDANCE: 8 Ohm
DI / LINE OUT LEVEL: +4 dBu at 7 watts input, maximum level setting
BALANCED LINE OUTPUT IMPEDANCE: Less than 6KΩ
UNBALANCED LINE OUTPUT IMPEDANCE: Less than 6KΩ
MAXIMUM RECOMMENDED INPUT POWER: 100 Watts RMS
ROHS COMPLIANT: Yes
DIMENSIONS: 8.8" (W) x 8.9" (D) x 3.6" (H)
WEIGHT: 6.6lb | 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.
- 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 – 12.1 lbs mono. Mono box dimensions 22.5″ x 18.5″ x 3 1/4″.
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