Description
Studio Control & Low Noise
Dual-transformer Class A design with no op-amps or ICs ensures ultra-low noise and maximum common-mode rejection, while each channel provides 48V phantom power, -20 dB pad, polarity reverse, a variable high-pass filter, and VU/LED meters, all housed in a rugged 2U steel chassis for professional studio use.
Tube Preamps
The ADL 600 uses three military-grade vacuum tubes per channel with ±300V rails for rich tone and high headroom, delivering over 73 dB of gain while handling low-output microphones effortlessly, and features selectable mic impedance, an 8-position gain switch, and fine-trim control for precise tonal shaping.
- Mic, line, and instrument inputs
- High-voltage, Class A, dual-transformer, vacuum-tube preamp
- 3 military-grade vacuum tubes
- Input-source select
- Variable mic-input impedance (150, 300, 900, 1,500Ω)
- Variable high-pass filter (40, 80, 120 Hz)
- 8-position Gain switch
- Variable Trim adjustment for final stage
- 48V phantom power
- -20 dB pad
- Polarity-reverse switch
- Backlit VU meter (output level) with -6 dB switch (for metering hot signals)
- > 73 dB of gain
- 2 unbalanced ¼” instrument inputs (front panel)
- 2 transformer-balanced XLR line inputs
- 2 transformer-balanced XLR mic inputs
- 2 transformer-balanced XLR line outputs
- 2U 19” rack-mountable, rugged steel chassis
- Internal power supply with standard IEC connector
- Chassis-ground link connectors (lift chassis ground)
Number of Channels: 2
Inputs:
2 x XLR Microphone
2 x XLR Line
Output: 2 x XLR
Phantom Power: Yes, individually selectable
Multi Function: No
Gain Range:
Mic: 18dB to 72dB
Line: -12dB to 40dB
Instrument: -5dB to 42dB
Maximum Output Level: +23dBu, @ 0.5%THD+N
Frequency Response: 10Hz to 45KHz, +/-1dB
Noise:
Floor: -95dBu, A-weighted
EIN: -125dBu, A-weighted
Dimensions: 19″ x 17″ x 3 1/2″
Weight: 28 lbs
Specialties: Selectable input impedance
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