PreSonus ADL 700 - High Voltage Tube Channel Strip

PreSonus ADL 700 - High Voltage Tube Channel Strip

PreSonus ADL 700 - High Voltage Tube Channel Strip

B&H # PRADL700 MFR # ADL 700
No Longer Available

Product Highlights

  • Single Channel
  • +/-300V Power Rails
  • Over 70dB of Microphone Preamp Gain
  • Fully Adjustable FET Compressor
  • 4-Band Semi-Parametric EQ
  • Phantom Power
  • Polarity Reverse and Pad Switches
  • Compressor Link for Second ADL 700
  • Internal Universal Power Supply
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  • 1Description

A tube-driven channel strip, the ADL 700 from PreSonus integrates a boutique-quality preamp, a custom-designed FET compressor, and a custom, four-band, semi-parametric EQ. The preamp features a Class A, discrete design that utilizes two 6922 and one 12AT7 vacuum tubes operating with ±300V power rails for maximum headroom. A dual-transformer design ensures low-noise operation, with maximum common-mode rejection. Unit is housed in a two rack space rugged steel chassis.

An input select switch allows all three inputs, microphone, line and instrument, to remain connected at all times while the microphone input has a choice of four impedance values. In addition, the unit provides variable input gain, using an eight-position, military-grade rotary switch that provides 35 dB of gain in stepped 5 dB increments. A trim potentiometer provides fine adjustments of +/-30 dB to the final preamp input stage. The output stage is controlled by a fully variable attenuator that provides trim adjustment.

The compressor includes fully variable attack, release, threshold, ratio, makeup gain, and bypass controls, and features a "soft knee" compression curve. Two units can have their compressors linked for achieving accurate stereo compression. A four-band semi-parametric EQ combines isolated filters and optimized per-band Q to provide subtle signal-shaping without harsh artifacts. All bands have 16 dB of cut or gain and frequency controls, with overlapping frequency ranges and fixed bandwidth (Q). The low and high bands are switchable between shelving and peak.

The EQ position in the signal chain can be switched to either pre- or post-compressor and front panel switches can bypass either or both. Phantom power is available, as are a 20 dB pad and polarity reverse. Fast-acting, eight-segment LED meters accurately detect fast transients and peaks. Large, back-lit, dual-mode analog VU metering enables monitoring of output and gain-reduction levels. A -6 dB switch offsets the meter for use with hot source signals and a master level control adjusts the overall output from -80 to +6 dB.

  • Single-channel channel strip with high-voltage, all-tube, Class A microphone preamplifier
  • Transformer-balanced XLR line and microphone inputs
  • Unbalanced front panel instrument input
  • Transformer-balanced XLR line output
  • High-voltage, all-tube preamp, Class A, dual-transformer design with one 12AT7 and two 6922 vacuum tubes
  • Input-source select switch
  • Variable microphone input impedance
  • Eight-position gain switch with variable trim adjustment for final stage
  • Fully variable FET compressor
  • Attack, release, threshold, ratio, makeup gain controls
  • Bypass switch
  • Stereo link for linking to the compressor on a second ADL 700
  • Four-band, semi-parametric EQ with bypass
  • Two, peak mid-bands
  • High and low bands switchable peak/shelving
  • Overlapping frequency ranges
  • Fixed bandwidth
  • EQ switchable to either pre-or post-compressor
  • Bypass switch
  • Dual-mode analog VU metering (output and gain reduction)
  • Meter-offset switch for metering hot signals
  • Variable high-pass filter
  • 48V phantom power
  • Polarity-invert switch
  • -20 dB pad
  • 2U 19" rack-mountable, rugged steel chassis
  • Chassis-ground link connectors (lift chassis ground)
  • Internal power supply with standard IEC connector
In the Box
PreSonus ADL 700 - High Voltage Tube Channel Strip
  • AC Power Cable
  • One (1) Year Warranty
  • Table of Contents
    • 1Description
    Number of Channels Single
    Inputs 1 x XLR Microphone
    1 x XLR Line
    1 x 1/4" TS Instrument (front panel)
    Maximum Input Level Microphone: +10 dBu (1500Ω, +20 dB pad out)
    Line: +30dBu
    Instrument: +20 dBu
    Outputs 1 x XLR
    1 x 1/4" TRS Compressor Link
    Maximum Output +28 dBu (@ 0.5% THD+N)
    Output Impedance 50Ω
    Frequency Response 10 Hz to 45 kHz, +/-1.0 dB
    Noise Noise Floor: -95 dBu (A-weighted), all inputs, minimum gain
    EIN: -123 dBu (A-weighted)
    Gain Range Microphone: +6 dB to +70 dB (1500Ω, +20 dB pad out)
    Line: -20 dB to +40 dB
    Instrument: -20 dB to +40 dB
    Input Impedance Microphone: 150, 300, 900 and 1.5kΩ (selectable)
    Line: 2kΩ
    Instrument: 100MΩ
    Phantom Power +48V, switchable
    Threshold Range -20 dBu to +30 dBu
    Ratio 1:1 to 4:1
    Attack Time Fast (0.5 ms) to Slow (10 ms)
    Release Time Fast (30 ms) to Slow (500 ms)
    Slope Soft knee
    Sidechain No
    Filter Type 2nd-order shelving filter
    Frequency Bands Low Band (low-pass or band-pass): 20 Hz to 250 Hz
    Low-Mid Band: 160 Hz to 2 kHz
    High-Mid Band: 800 Hz to 8 kHz
    High Band (high-pass or band-pass): 2 kHz to 20 kHz
    Bandwidth 0.55
    Range (Boost/Cut) +/-16 dB
    Dimensions (WxDxH) 19 x 17 x 3.5" (483 x 432 x 89 mm)
    Weight 22.8 lb (10.3 kg)
    Specialties EQ can be placed pre- or post-compressor
    Packaging Info
    Package Weight 26.2 lb
    Box Dimensions (LxWxH) 22.0 x 20.0 x 9.5"
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