This product has been discontinued.

Technical Specifications

Microphone Preamp 1-24 (XLR Balanced)

• Type    XLR Female, Balanced
• Frequency Response to Direct Output    20 Hz to 40 kHz ±0.5 dBu
• Frequency Response to Main Output    20 Hz to 20 kHz ±0.5 dBu
• Input Impedance (Balanced)    1 kΩ
• THD to Direct Output    
• THD to Main Output    
• EIN to Direct Output    +125 dB unwtd, +130 dB A-wtd
• S/N Ratio to Direct Output    -97 dB
• S/N Ratio to Main Output    -94 dB
• Common Mode Rejection Ratio    +65 dB
• Gain Control Range    -16 dB to +67 dB (± 1 dB)
• Maximum Input Level (unity gain)    +16 dBu
• Phantom Power    +48 VDC

Line Inputs

• Type    ¼" TRS Female, balanced mono
• Frequency Response to Direct Outputs    10-40 kHz, 0 / -0.5 dBu
• Frequency Response to Main Outputs    20-20 kHz, ±0.5 dBu
• Input Impedance    10 kΩ
• THD to Direct Output    
• THD to Main Output    
• S/N Ratio to Direct Output    -105 dB
• S/N Ratio to Main Output    -94 dB
• Gain Control Range (±1 dB)    -20 dB to +20 dB
• Maximum Input level (unity gain)    +22 dBu

Tape Inputs

• Type    ¼" TRS Female, balanced mono
• Maximum Input Level    +10 dBu

Auxiliary Inputs

• Type    ¼" TRS Female, balanced (2 stereo pairs)
• Maximum Input Level    +22 dBu

Main Outputs

• Type    Male, balanced (stereo pair); ¼" TRS Female, balanced (stereo pair); XLR Male, balanced (mono)
• Rated Output Level    +24 dBu
• Output Impedance    100Ω

Aux Outputs

• Type    ¼" TRS Female, balanced (mono)
• Rated Output Level    +18 dBu
• Output Impedance    100Ω

Subgroup Outputs

• Type    ¼" TRS Female, balanced (mono)
• Rated Output Level    +18 dBu
• Output Impedance    100Ω

Tape Outputs

• Type    RCA Female, unbalanced (stereo pair)
• Rated Output Level    +18 dBu
• Output Impedance    100Ω

Control Room Outputs

• Type    ¼" TRS Female, balanced (stereo pair)
• Rated Output Level    +18 dBu
• Output Impedance    100Ω

System Crosstalk

• Input to Output    -90 dBu
• Adjacent Channels    87 dBu

Noise Gate / Expander

• Threshold Range    -84 dB to 0 dB
• Attack Time    0.5 ms
• Release Time    0.05s to 2s
• Expander Attenuation Range    2:1
• Gate Attenuation Range    ∞
• Key Listen Filter    2nd-order resonant bandpass; Q=0.7; OFF, 40 Hz-16 kHz

Limiter

• Threshold    -28 dBFS
• Ratio    ∞:1
• Attack    20 ns
• Hold    10 ms
• Release    20 ms

Compressor

• Threshold Range    -56 dB to 0 dB
• Ratio    1:1 to 14:1
• Attack Time    0.2 ms to 150 ms
• Release Time    40 ms to 1000 ms
• Auto Attack and Release    Attack = 10 ms, Release = 150 ms
• Curve Types    hard and soft knee

EQ

• Type    2nd-order shelving filter (Q = 0.55)
• Low (Lowpass or Bandpass)    36 to 465 Hz, ±15 dB
• Low Mid    90 Hz to 1.2 kHz, ±15 dB
• High Mid    380 Hz to 5 kHz, ±15 dB
• High (Highpass or Bandpass)    1.4 kHz to 18 kHz, ±15 dB
• Q    0.1 - 4

Digital Audio

• ADC Dynamic Range (A-wtd, 48 kHz)    118 dB
• DAC Dynamic Range (A-wtd, 48 kHz)    118 dB
• FireWire    S400, 400 Mb/s
• Internal Processing    32-bit, floating point
• Sampling Rate    44.1, 48 kHz
• A/D/A Bit Depth    24
• Reference Level for 0 dBFS    +18 dBu

Clock

• Jitter    
• Jitter Attenuation    >60 dB (1 ns in ≈ 1 ps out)

Power/Environmental

• Connector    IEC
• Input-Voltage Range    100 to 240V, 50-60 Hz
• Power Requirements (continuous)    100W
• Temperature Range    0-40 degrees Celsius

Physical

• Length    21.31 inches (541.27 mm)
• Width (chassis only)    25.19 inches (639.80 mm)
• Maximum Height    7.02 inches (178.21 mm)
• Weight    30 lbs.