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alsa-scarlett-gui/INTERFACES.md
Geoffrey D. Bennett 33bc54480d Add TOC to INTERFACES.md
2023-12-02 02:45:32 +10:30

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Focusrite Scarlett and Clarett Interface Features by Model

The information here was compiled carefully and is believed accurate but there might still be mistakes. Please independently confirm before relying on anything here.

Table of Contents

Scarlett 6i6 Gen 2

  • 6× Hardware Inputs

    • Analogue In 1–2: Mic/Line/Inst In 1–2 (Pad)
    • Analogue In 3–4: Line In 3–4
    • S/PDIF 1–2

  • Hardware Input Controls

    • 2× Input Gain knobs for Analogue In 1–2
    • Fixed Input Gain for Analogue In 3–4
    • Phantom Power for Analogue 1–2 linked

  • 6× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L) + Headphone 1 Left
    • Analogue 2: Line 2 Out (Monitor R) + Headphone 1 Right
    • Analogue 3: Line 3 Out + Headphone 2 Left
    • Analogue 4: Line 4 Out + Headphone 2 Right
    • S/PDIF 1–2

  • Hardware Output Controls

    • Monitor volume knob controlling Line 1+2
    • No physical control for Line 3+4 output volume
    • Headphone 1 volume knob controlling Headphone 1 Volume
    • Headphone 2 volume knob controlling Headphone 2 Volume
    • 4× Mute + Line Out Gain controls −127dB to 0dB
      • 1–2 control Line 1–2 Out and Headphone 1
      • 3–4 control Line 3–4 Out and Headphone 2

  • Mixer: 18 input (1–18), 10 output (A–J)

    • 18×10 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 6× PCM Inputs (USB device to host)

  • 6× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–4, S/PDIF 1–2, Mix A–J, PCM Outputs 1–6

  • Sync Status

  • Clock Source: Internal or S/PDIF

Scarlett 18i8 Gen 2

  • 18× Hardware Inputs

    • Analogue 1–2: Mic/Line/Inst In 1–2 (Pad)
    • Analogue 3–4: Mic/Line In 3–4 (Pad)
    • Analogue 5–8: Line In 5–8
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Input Controls

    • 4× Input Gain knobs for Analogue In 1–4
    • Fixed Input Gain for Analogue In 5–8
    • Phantom Power for Analogue 1–2 linked
    • Phantom Power for Analogue 3–4 linked

  • 8× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L)
    • Analogue 2: Line 2 Out (Monitor R)
    • Analogue 3: Headphone 1 Left
    • Analogue 4: Headphone 1 Right
    • Analogue 5: Headphone 2 Left
    • Analogue 6: Headphone 2 Right
    • S/PDIF 1–2

  • Hardware Output Controls

    • Monitor volume knob controlling Line 1+2
    • Headphone 1 volume knob controlling Headphone 1 Volume
    • Headphone 2 volume knob controlling Headphone 2 Volume
    • 6× Mute + Line Out Gain controls −127dB to 0dB
      • 1–2 control Line 1–2 Out
      • 3–4 control Headphone 1
      • 5–6 control Headphone 2

  • Mixer: 20 input (1–20), 10 output (A–J)

    • 20×10 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 20× PCM Inputs (USB device to host)

  • 8× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–8, S/PDIF 1–2, ADAT 1–8, Mix A–J, PCM Outputs 1–8

  • Sync Status

  • Clock Source: Internal, S/PDIF, or ADAT

Scarlett 18i20 Gen 2

  • 18× Hardware Inputs

    • Analogue 1–2: Mic/Line/Inst In 1–2 (Pad)
    • Analogue 3–8: Mic/Line In 3–8
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Input Controls

    • 8× Input Gain knobs for Analogue In 1–8
    • Phantom Power for Analogue 1–4 linked
    • Phantom Power for Analogue 5–8 linked

  • 20× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L)
    • Analogue 2: Line 2 Out (Monitor R)
    • Analogue 3: Line 3 Out
    • Analogue 4: Line 4 Out
    • Analogue 5: Line 5 Out
    • Analogue 6: Line 6 Out
    • Analogue 7: Line 7 Out + Headphone 1 Left
    • Analogue 8: Line 8 Out + Headphone 1 Right
    • Analogue 9: Line 9 Out + Headphone 2 Left
    • Analogue 10: Line 10 Out + Headphone 2 Right
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Output Controls

    • For Analogue 1–8 Outputs:
      • 8× SW/HW Volume Control Switch
      • 8× SW Line Out Gain controls −127dB to 0dB
      • 8× SW Mute
    • Monitor volume knob controlling volume of Analogue 1–8 (selected by SW/HW Volume Control Switches)
    • Global Mute and Dim controlling Analogue 1–8 (enabled per-channel if SW/HW Volume Control Switch set to HW)
    • 2× Headphone volume knob controlling Headphone volume (applied in addition to the SW/HW Volume Control)

  • Mixer: 20 input (1–20), 10 output (A–J)

    • 20×10 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 20× PCM Inputs (USB device to host)

  • 18× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–8, S/PDIF 1–2, ADAT 1–8, Mix A–J, PCM Outputs 1–8

  • Sync Status

  • Clock Source: Internal, S/PDIF, or ADAT

Scarlett Solo Gen 3

  • 2× Hardware Inputs

    • Analogue In 1: Mic In (Air, Phantom Power)
    • Analogue In 2: Line/Inst In

  • Hardware Input Controls

    • 2× Input Gain knobs for Analogue 1–2
    • Phantom Power Persistence

  • 2× Hardware Outputs

    • Analogue Out 1: Line Out Left + Headphone Left
    • Analogue Out 2: Line Out Right + Headphone Right

  • Hardware Output Controls

    • Monitor volume knob controls all outputs together

  • 2× PCM Inputs (USB device to host)

    • Fixed to Analogue Inputs 1–2

  • 2× PCM Outputs (USB host to device)

    • Fixed to Analogue Outputs 1–2

  • Direct Monitor:

    • On: mixes Analogue 1+2 Inputs into both Analogue 1+2 Outputs

Scarlett 2i2 Gen 3

  • 2× Hardware Inputs

    • Analogue In 1–2: Mic/Line/Inst In 1–2 (Air)

  • Hardware Input Controls

    • 2× Input Gain knobs for Analogue 1–2
    • Phantom Power for Analogue 1–2 linked
    • Phantom Power Persistence

  • 2× Hardware Outputs

    • Analogue Out 1: Line Out Left + Headphone Left
    • Analogue Out 2: Line Out Right + Headphone Right

  • Hardware Output Controls

    • Monitor volume knob for Line Out Left and Right
    • Headphone volume knob for Headphone

  • 2× PCM Inputs (USB device to host)

    • Fixed to Analogue Inputs 1–2

  • 2× PCM Outputs (USB host to device)

    • Fixed to Analogue Outputs 1–2

  • Direct Monitor:

    • Mono: mixes both Analogue 1+2 Inputs into both Analogue 1+2 Outputs
    • Stereo: mixes Analogue 1+2 Inputs into Analogue 1+2 Outputs respectively

Scarlett 4i4 Gen 3

  • 4× Hardware Inputs

    • Analogue In 1–2: Mic/Line/Inst In 1–2 (Air, Pad)
    • Analogue In 3–4: Line In 3–4

  • Hardware Input Controls

    • 2× Input Gain knobs for Analogue In 1–2
    • Fixed Input Gain for Analogue In 3–4
    • Phantom Power for Analogue 1–2 linked
    • Phantom Power Persistence

  • 4× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L)
    • Analogue 2: Line 2 Out (Monitor R)
    • Analogue 3: Line 3 Out + Headphone Left
    • Analogue 4: Line 4 Out + Headphone Right

  • Hardware Output Controls

    • Monitor volume knob controlling Line 1+2
    • Headphone volume knob controlling Headphone volume
    • No physical control for Line 3+4 output volume
    • 4× Mute + Line Out Gain controls −127dB to 0dB
      • 1–2 control Line 1–2 Out
      • 3–4 control Line 3–4 Out and Headphone

  • Mixer: 8 input (1–8), 6 output (A–F)

    • 8×6 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 6× PCM Inputs (USB device to host)

  • 4× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–4, Mix A–F, PCM Outputs 1–4

  • Sync Status

Scarlett 8i6 Gen 3

  • 8× Hardware Inputs

    • Analogue 1–2: Mic/Line/Inst In 1–2 (Air, Pad)
    • Analogue 3–6: Line In 3–6
    • S/PDIF 1–2

  • Hardware Input Controls

    • 2× Input Gain knobs for Analogue In 1–2
    • Fixed Input Gain for Analogue In 3–6
    • Phantom Power for Analogue 1–2 linked
    • Phantom Power Persistence

  • 6× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L) + Headphone 1 Left
    • Analogue 2: Line 2 Out (Monitor R) + Headphone 1 Right
    • Analogue 3: Line 3 Out + Headphone 2 Left
    • Analogue 4: Line 4 Out + Headphone 2 Right
    • S/PDIF 1–2

  • Hardware Output Controls

    • Monitor volume knob controlling Line 1+2
    • No physical control for Line 3+4 output volume
    • Headphone 1 volume knob controlling Headphone 1 Volume
    • Headphone 2 volume knob controlling Headphone 2 Volume
    • 4× Line Out Gain controls −127dB to 0dB
      • 1–2 control Line 1–2 Out and Headphone 1
      • 3–4 control Line 3–4 Out and Headphone 2

  • Mixer: 8 input (1–8), 8 output (A–H)

    • 8×8 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 10× PCM Inputs (USB device to host)

  • 6× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–6, S/PDIF 1–2, Mix A–H, PCM Outputs 1–6

  • Sync Status

  • Clock Source: Internal or S/PDIF

Scarlett 18i8 Gen 3

  • 18× Hardware Inputs

    • Analogue 1–2: Mic/Line/Inst In 1–2 (Air, Pad)
    • Analogue 3–4: Mic/Line In 3–4 (Air, Pad)
    • Analogue 5–8: Line In 5–8
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Input Controls

    • 4× Input Gain knobs for Analogue In 1–4
    • Fixed Input Gain for Analogue In 5–8
    • Phantom Power for Analogue 1–2 linked
    • Phantom Power for Analogue 3–4 linked
    • Phantom Power Persistence

  • 10× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L)
    • Analogue 2: Line 2 Out (Monitor R)
    • Analogue 3: Line 3 Out (Alt Monitor L)
    • Analogue 4: Line 4 Out (Alt Monitor R)
    • Analogue 5: Headphone 1 Left
    • Analogue 6: Headphone 1 Right
    • Analogue 7: Headphone 2 Left
    • Analogue 8: Headphone 2 Right
    • S/PDIF 1–2

Note: The Headphones outputs are internally Analogue 3–6 and the rear Line 3/4 outputs (Alt Monitor) are internally Analogue 7/8, but the driver hides this from you.

  • Hardware Output Controls

    • For Analogue 1–8 Outputs:
      • 8× SW/HW Volume Control Switch
      • 8× SW Line Out Gain controls −127dB to 0dB
      • 8× SW Mute
    • Monitor volume knob controlling volume of Analogue 1–8 (selected by SW/HW Volume Control Switches)
    • Global mute and dim controlling Analogue 1–8 (enabled per-channel if SW/HW Volume Control Switch set to HW)
    • 2× Headphone volume knob controlling Headphone volume (applied in addition to the SW/HW Volume Control)

  • Mixer: 18 input (1–18), 10 output (A–J)

    • 18×10 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 18× PCM Inputs (USB device to host)

  • 8× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–8, S/PDIF 1–2, ADAT 1–8, Mix A–J, PCM Outputs 1–20

  • Speaker Switching

  • Sync Status

  • Clock Source: Internal, S/PDIF, or ADAT

Scarlett 18i20 Gen 3

  • 19× Hardware Inputs

    • Analogue 1–2: Mic/Line/Inst In 1–2 (Air, Pad)
    • Analogue 3–8: Mic/Line In 3–8 (Air, Pad)
    • Analogue 9: Talkback Mic
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Input Controls

    • 8× Input Gain knobs for Analogue In 1–8
    • Phantom Power for Analogue 1–4 linked
    • Phantom Power for Analogue 5–8 linked
    • Phantom Power Persistence

  • 20× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L)
    • Analogue 2: Line 2 Out (Monitor R)
    • Analogue 3: Line 3 Out
    • Analogue 4: Line 4 Out
    • Analogue 5: Line 5 Out
    • Analogue 6: Line 6 Out
    • Analogue 7: Line 7 Out + Headphone 1 Left
    • Analogue 8: Line 8 Out + Headphone 1 Right
    • Analogue 9: Line 9 Out + Headphone 2 Left
    • Analogue 10: Line 10 Out + Headphone 2 Right
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Output Controls

    • For Analogue 1–8 Outputs:
      • 8× SW/HW Volume Control Switch
      • 8× SW Line Out Gain controls −127dB to 0dB
      • 8× SW Mute
    • Monitor volume knob controlling volume of Analogue 1–8 (selected by SW/HW Volume Control Switches)
    • Global Mute and Dim controlling Analogue 1–8 (enabled per-channel if SW/HW Volume Control Switch set to HW)
    • 2× Headphone volume knob controlling Headphone volume (applied in addition to the SW/HW Volume Control)

  • Mixer: 25 input (1–25), 12 output (A–L)

    • 25×12 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 20× PCM Inputs (USB device to host)

  • 20× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–8, S/PDIF 1–2, ADAT 1–8, Mix A–L, PCM Outputs 1–8

  • Speaker Switching

  • Talkback Mic

  • Sync Status

  • Clock Source: Internal, S/PDIF, or ADAT

Clarett 2Pre USB and Clarett+ 2Pre

  • 12× Hardware Inputs

    • Analogue 1–2: Mic/Line/Inst In 1–2 (Air)
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Input Controls

    • 2× Input Gain knobs for Analogue In 1–2
    • Phantom Power for Analogue 1–2 separate

  • 4× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L)
    • Analogue 2: Line 2 Out (Monitor R)
    • Analogue 3: Line 3 Out + Headphone Left
    • Analogue 4: Line 4 Out + Headphone Right

  • Hardware Output Controls

    • For Analogue 1–4 Outputs:
      • 4× SW/HW Volume Control Switch
      • 4× SW Line Out Gain controls −127dB to 0dB
      • 4× SW Mute
    • Monitor volume knob controlling volume of Analogue 1–4 (selected by SW/HW Volume Control Switches)
    • Global Mute and Dim controlling Analogue 1–4 (enabled per-channel if SW/HW Volume Control Switch set to HW)
    • Headphone volume knob controlling Headphone volume (applied in addition to the SW/HW Volume Control)

  • Mixer: 18 input (1–18), 10 output (A–J)

    • 18×10 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 12× PCM Inputs (USB device to host)

  • 4× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–2, S/PDIF 1–2, ADAT 1–8, Mix A–J, PCM Outputs 1–4

  • Sync Status

  • Clock Source: Internal, S/PDIF, or ADAT

Clarett 4Pre USB and Clarett+ 4Pre

  • 12× Hardware Inputs

    • Analogue 1–2: Mic/Line/Inst In 1–2 (Air)
    • Analogue 3–4: Mic/Line In 3–4 (Air)
    • Analogue 4–8: Mic/Line In 4–8
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Input Controls

    • 4× Input Gain knobs for Analogue In 1–4
    • Phantom Power for Analogue 1–2 linked
    • Phantom Power for Analogue 3–4 linked

  • 8× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L)
    • Analogue 2: Line 2 Out (Monitor R)
    • Analogue 3: Line 3 Out + Headphone 1 Left
    • Analogue 4: Line 4 Out + Headphone 1 Right
    • Analogue 5: Line 5 Out + Headphone 2 Left
    • Analogue 6: Line 6 Out + Headphone 2 Right
    • S/PDIF 1–2

  • Hardware Output Controls

    • For Analogue 1–6 Outputs:
      • 6× SW/HW Volume Control Switch
      • 6× SW Line Out Gain controls −127dB to 0dB
      • 6× SW Mute
    • Monitor volume knob controlling volume of Analogue 1–6 (selected by SW/HW Volume Control Switches)
    • Global Mute and Dim controlling Analogue 1–6 (enabled per-channel if SW/HW Volume Control Switch set to HW)
    • 2× Headphone volume knob controlling Headphone volume (applied in addition to the SW/HW Volume Control)

  • Mixer: 18 input (1–18), 10 output (A–J)

    • 18×10 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 18× PCM Inputs (USB device to host)

  • 8× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–8, S/PDIF 1–2, ADAT 1–8, Mix A–J, PCM Outputs 1–8

  • Sync Status

  • Clock Source: Internal, S/PDIF, or ADAT

Clarett 8Pre USB and Clarett+ 8Pre

  • 18× Hardware Inputs

    • Analogue 1–2: Mic/Line/Inst In 1–2 (Air)
    • Analogue 3–8: Mic/Line In 3–8 (Air)
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Input Controls

    • 8× Input Gain knobs for Analogue In 1–8
    • Phantom Power for Analogue 1–4 linked
    • Phantom Power for Analogue 5–8 linked

  • 20× Hardware Outputs

    • Analogue 1: Line 1 Out (Monitor L)
    • Analogue 2: Line 2 Out (Monitor R)
    • Analogue 3: Line 3 Out
    • Analogue 4: Line 4 Out
    • Analogue 5: Line 5 Out
    • Analogue 6: Line 6 Out
    • Analogue 7: Line 7 Out + Headphone 1 Left
    • Analogue 8: Line 8 Out + Headphone 1 Right
    • Analogue 9: Line 9 Out + Headphone 2 Left
    • Analogue 10: Line 10 Out + Headphone 2 Right
    • S/PDIF 1–2
    • ADAT 1–8

  • Hardware Output Controls

    • For Analogue 1–10 Outputs:
      • 6× SW/HW Volume Control Switch
      • 6× SW Line Out Gain controls −127dB to 0dB
      • 6× SW Mute
    • Monitor volume knob controlling volume of Analogue 1–10 (selected by SW/HW Volume Control Switches)
    • Global Mute and Dim controlling Analogue 1–10 (enabled per-channel if SW/HW Volume Control Switch set to HW)
    • 2× Headphone volume knob controlling Headphone volume (applied in addition to the SW/HW Volume Control)

  • Mixer: 18 input (1–18), 10 output (A–J)

    • 18×10 gain controls −80dB to +6dB
    • Each input assignable to any of the assignable outputs

  • 18× PCM Inputs (USB device to host)

  • 20× PCM Outputs (USB host to device)

  • Assignable outputs to the hardware outputs, mixer, and PCM Inputs:

    • Off, Analogue Inputs 1–8, S/PDIF 1–2, ADAT 1–8, Mix A–J, PCM Outputs 1–20

  • Sync Status

  • Clock Source: Internal, S/PDIF, or ADAT

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