Aphex Channel

Input Section

• Connector (Input): XLR-3F
• Type: Transformerless, NPN active balanced, tube second stage
• Input Impedance: 2kΩ nominal
• Maximum Input Level (MIL): +25 dBu
• CMRR: >70 dB @ 60 Hz
• Nominal Preamp Gain: 20 to 65 dB
• Phantom Power: +48VDC
• Pad: 20 dB
• Equivalent Input Noise (EIN): -127 dBu (input shorted)
• Tube Type: 12AT7 / ECC81 Dual Triode

Output Section

• Connectors (Output): XLR-3M and 1/4" TRS phone jacks
• Output Type:
• XLR: Impedance Balanced (usable unbalanced)
• TRS: Balanced
• Output Impedance:
• Balanced (XLR): 66Ω
• Unbalanced:
• XLR: 33Ω
• TRS: 600Ω
• Nominal Output Level:
• XLR: +4 dBu
• TRS: -10 dBV
• Maximum Output Level:
• Unloaded: +25 dBu
• TRS: +11 dBV

Compressor Section

• Attack / Release: Program dependent, user variable release baseline
• Ratio: 4:1
• Threshold: Fixed
• Knee: Medium hard
• Attack Time: 0.1 ms
• Hold / Release: 300 ms / 400 ms

Expander/Gate Section

• Threshold: -50 to +20 dB (variable)
• Depth: 1 to 58 dB (variable)
• Attack Time: 0.1 ms
• Release Time: 100 ms

De-Esser Section

• Threshold: Variable -20 to +20 dB
• Ratio: 5:1
• Active Band: 4 kHz to 20 kHz
• Crossover: Linkwitz-Riley, 24 dB/octave

Insert Section

• Send Connector: 1/4" TRS phone jack (balanced)
• Return Connector: 1/4" TRS phone jack (balanced)
• Nominal Operating Level: 0 dBu
• Insertion Point: Between dynamics processing and equalizers

Equalizer Section

• Low Frequency:
• Frequency: 50 Hz to 280 Hz
• Tune Gain: Off to +12 dB
• Mid Frequency (Sweepable):
• Frequency: 240 Hz to 8 kHz
• Gain: ±12 dB
• Q Range: 0.5 to 5
• High Mid Frequency:
• Frequency: 500 Hz to 5 kHz
• Gain (Mix): Off to +12 dB

Performance

• Total Harmonic Distortion (THD): <0.01% @ +4 dBu Output
• Intermodulation Distortion (IMD): <0.01% @ +4 dBu Output
• Frequency Response (Flat): 18 Hz to 24 kHz ±1 dB
• Dynamic Range: Digital dynamic range exceeds analog front end
• Noise Dither: Analog preamp noise floor equivalent to 16-bit digital dither

Digital Section

• Internal Sample Rates: 44.1, 48, 88.2, 96 kHz
• External Sample Rates: Auto sync to Word Clock (32 kHz – 96 kHz)
• Resolution: 24-bit
• Word Clock Input: BNC jack, High Z
• Word Clock Output: BNC jack, 75Ω, 5 Vp-p
• Level Equivalency: -20 dBFS Digital = +4 dBu Analog

Power & Physical

• Power Requirements: 90–250 VAC, 50–60 Hz, 12W
• Dimensions: 19” W x 1.75” H x 8.25” D (1U Rack)
• (482.6 mm x 44.5 mm x 209.6 mm)
• Depth Behind Front Panel: 7.5" (190.5 mm)
• Net Weight: 6 lbs (2.73 kg)
• Shipping Weight: 9 lbs (4.1 kg)