ART Pro Channel 1-channel Tube Microphone Preamp

ART Pro Channel

 Microphone Preamp is a multi-purpose tool enclosed in a two rack space chassis. Pro Channel features 3 independent circuits including a tube-based analog preamp, a VCA-less compressor switchable between optical or variable-mu control element and a semi-parametric, four-band, tube-based equalizer.

The circuitry is a hybrid design making use of solid-state and tube technology. A transformerless design helps the Pro Channel maintain good signal integrity and exhibits extremely low noise. Although the order of the circuits can be changed using the insert points, normally the compressor circuit follows the preamp and the equalizer follows the compressor. While the preamp is active all the way, the compressor and equalizer may be individually bypassed.

Pro Channel's compression circuit features a VCA-less design and uses optical or variable-mu dual triode electronics for superior musical performance. The compressor is soft knee by design, and though it can offer a thoroughly "squashed" signal, it was designed to good at areas where transparent and musical dynamics control is desired.

The 4-band tube-based equalizer was designed to help "fix" the instruments that offer the most headaches when recording. Two sweepable parametric bands and selectable shelving bands overlap each other offering the ultimate in flexibility. The Pro Channel features balanced XLR and unbalanced 1/4" inputs and outputs. The 1/4" input is perfect for DI or line level applications and overall the unit was designed to work seamlessly with any recording, sound-reinforcement or electronic instrument setup.

Item Includes

• ART Pro Channel 1-channel Tube Microphone Preamp
• AC Power Cord
• Five (5) Year Warranty

• Three independent World-Class modules: tube mic pre, switchable optical/tube compressor, and tube EQ
• Warm, Smooth, and Silky Sound Quality
• Both electro-optical and variable-mu compressor designs
• Precision Detented Potentiometers
• Selectable VU Metering (mic pre out, compressor out, or Main Out) Features
• Balanced XLR and Unbalanced 1/4" Inputs and Outputs
• Insert Points Between Preamp and Compressor, and Compressor and EQ
• Three Hand-Selected Vacuum Tubes
• Professional Signal Processing For Use With Any Analog or Digital Recording Format
• Exceptional Processing Channel For Any Line or Instrument Level Signal

Number of Channels
Single

Inputs
1 x XLR
1 x 1/4" TRS phone
1 x 1/4" TS phone EQ Return
1 x 1/4" TS phone Compressor Return

Outputs
1 x XLR
1 x 1/4" TRS phone
1 x 1/4" TS phone EQ Send
1 x 1/4" TS phone Compressor Send

Frequency Response
10Hz to 20kHz, +/- 0.5dB

Noise
EIN: -130dBu, XLR to XLR (A-weighted)

Preamp:

Gain Range
-4dB to +38dB

Maximum Output
+27dBu (XLR), +22dBu (1/4")

Input Impedance
XLR: 1.6kOhm
1/4" TRS: 1MOhm
Inserts: 10kOhm

Phantom Power
+48V

Compressor:

Threshold Range
-20dB to +20dB

Ratio
Variable: 2:1 to >10:1

Attack Time
Fast: 2ms (optical), 0.5ms (vari-mu)
Slow: 15ms (for 20dB of comp)

Release Time
Fast: 300ms
Auto: 100ms-3sec (program dependent)

Slope
Not specified by manufacturer

Sidechain
No

Equalizer:

Filter Type
2-band parametric and low and high pass filters

Frequency Bands
High Pass: Switched, 40kHz, 120Hz
High-Mid: Variable 200Hz to 2kHz or 2kHz to 20kHz (Shift Out/In)
Low-Mid: Variable 20Hz to 200Hz or 200Hz to 2kHz (Shift Out/In)
Low Pass: Switched, 6kHz, 18kHz

Bandwidth
Q=1.1 to 3.3

Range (Boost/Cut)
Low, High: +/-12dB
Low-Mid and High-Mid: +/-12dB (wide), +/-20dB (narrow)

Physical:

Dimensions (WxDxH)
19" x 6 1/2" x 3 1/2"

Weight
12 lbs

Specialties
Insert points between preamp and compressor and compressor and EQ

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