Focusrite Scarlett 2i2 Spec comparison:
1st, 2nd, 3rd, 4th generations
Links to original PDF Manuals
Scarlett 2i2 Performance Specifications
Recording
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Clock source |
| Internal |
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| Supported Sample Rates | 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz | 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz | 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz | 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz |
| Bit Depth | 24-bit | 24-bit | 24-bit | 24-bit |
Microphone Inputs
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Number of pre amps | 2 | 2 | 2 | 2 |
| Frequency Response | 20 Hz – 20 kHz +/-0.1 dB (min gain) | 20 Hz to 20 kHz ±0.1 dB | 20 Hz to 20 kHz ±0.1 dB | 20 Hz – 20 kHz ± 0.06 dB |
| Dynamic Range (A-weighted) | 105 dB | 106 dB | 111 dB | 116 dB |
| THD+N | -100dB (minimum gain, -1 dBFS input with 20 Hz – 20 kHz filter) | <0.002% (minimum gain, -1 dBFS input with 22 Hz/22 kHz bandpass filter | <0.0012% (minimum gain, -1 dBFS input with 22 Hz/22 kHz bandpass filter) | -100 dB (-1dBFS @ 8 dB Gain) |
| Noise EIN (A-Weighted) | -127 dB: measured at maximum gain with 150 Ohm termination (20 Hz – 20 kHz filter) | -128 dB | -128 dB | -127 dBu |
| Maximum Input Level (at minimum gain) |
| +4 dBu | +9 dBu | +16 dBu |
| Gain Range | -4 dB to +46 dB | 50 dB | 56 dB | 69 dB |
| Input Impedance | 2kΩ |
| 3kΩ | 3kΩ |
Line Inputs
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Number of line inputs (shared with hi-Z inputs) | 2 | 2 | 2 | 2 |
| Frequency Response | 20 Hz – 20 kHz +/-0.1 dB (min gain) | 20 Hz to 20 kHz, ±0.1 dB | 20 Hz to 20 kHz ±0.1 dB | 20 Hz – 20k Hz ± 0.05 dB |
| Dynamic Range (A-weighted) | 105 dB | 106 dB | 110.5 dB | 115.5 dB |
| THD+N | -91dB (measured at minimum gain with -1 dBFS input and 20 Hz – 20 kHz filter) | <0.003% (minimum gain, -1dBFS input with 22 Hz/22 kHz bandpass filter | <0.002% (minimum gain, -1 dBFS input with 22 Hz/22 kHz bandpass filter) | -100dB (-1dBFS @ 8dB Gain) |
| Maximum Input Level (at minimum gain) |
| +22 dBu | +22 dBu | +22 dBu |
| Gain Range |
| 50 dB | 56 dB | 69 dB |
| Input Impedance | 10kΩ |
| 60kΩ | 60kΩ |
| Noise in presence of signal | -104 dBu (measured at minimum gain, with a 20 Hz – 20 kHz filter) |
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Instrument Inputs
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Number of hi-Z inputs (shared with line inputs) | 2 | 2 | 2 | 2 |
| Frequency Response | 20 Hz – 20 kHz +/-0.1 dB (min gain) | 20 Hz to 20 kHz, ±0.1 dB | 20 Hz to 20 kHz ±0.1 dB | 20 Hz – 20 kHz ± 0.15 dB |
| Dynamic Range (A-weighted) | 105 dB | 106 dB | 110 dB | 113 dB |
| THD+N | -72dB (measured at minimum gain with -1dBFS signal and 20 Hz – 20 kHz filter) | <0.02% (minimum gain, -1 dBFS input with 22 Hz/22 kHz bandpass filter | <0.03% (minimum gain, -1 dBFS input with 22 Hz/22 kHz bandpass filter) | -80dB (-1dBFS @ 8 dB Gain) |
| Maximum Input Level (at minimum gain) |
| +13 dBu | +12.5 dBu | +12 dBu |
| Gain Range | -4dB to +46 dB | 50 dB | 56 dB | 62 dB |
| Input Impedance |
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| 1.5 MΩ | 1 MΩ |
| Noise in presence of signal | -87 dBu (20 Hz -20 kHz filter |
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Line Outputs 1 & 2 (balanced)
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Frequency Response |
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| 20Hz – 20kHz ± 0.02dB |
| Dynamic Range (A-weighted) | 104 dB | 106 dB | 108.5 dB | 120dB |
| THD+N | -100dB (measured with -1dBFS input and 20Hz – 20 kHz filter, unweighted) |
| <0.002% (maximum level, -1 dBFS input 1 kHz with 20 Hz/22 kHz bandpass filter) | -109dB |
| Maximum Output Level | +10 dBu | +10 dBu | +15.5 dBu | +16dBu |
| Output impedance |
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| 430 Ω | 100Ω |
Headphone Outputs
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Frequency Response |
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| 20Hz – 20kHz ± 0.1dB @ 33Ω / 300Ω |
| Dynamic Range (A-weighted) | 104 dB | 107 dB | 104 dB | 112dB @ 33Ω |
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| 115dB @ 300Ω |
| Maximum Output Level |
| > +10 dBu | 7 dBu | 2.5dBu into 33Ω |
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| 10dBu into 300Ω |
| Maximum Output Power |
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| 32mW into 33Ω |
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| 22mW into 300Ω |
| THD+N |
| <0.002% (minimum gain, -1 dBFS input, 1 kHz, with 22 Hz/22 kHz bandpass filter) | <0.002% (maximum level, -1 dBFS input, 1 kHz, with 20 Hz/22 kHz bandpass filter) | -99dB @ 33Ω (Minimum) |
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| -108dB @ 300Ω (Minimum) |
| Output impedance |
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| <1 Ω | 50Ω |
Scarlett 2i2 Physical and Electrical Characteristics
Analogue Inputs
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Connectors | Neutrik XLR Combo: Mic/Line/Inst (Inputs 1-2) on front panel | XLR “Combo” type: Mic/Line/Inst (Inputs 1-2) on front panel | XLR “Combo” type: Mic/Line/Inst (Inputs 1-2) on front panel | Two rear panel Neutrik® XLR connectors |
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| Two front panel Neutrik® 6.35mm (1/4”) jack sockets |
| Mic/Line switching | Automatic | Automatic | Automatic | Automatic |
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| Connecting a 6.35mm jack to the front panel disables microphone input. |
| Phantom Power (48v) | Shared +48 V phantom power switch for inputs | Shared 48 V phantom power switch for inputs 1 & 2 (XLR connections only) | Shared 48 V phantom power switch for inputs 1 & 2 (XLR connections only) | Front panel 48V (phantom power) button or switch in software |
| Line/Instrument switching | 1 & 2 | 2 x front panel switches | 2 x front panel switches or via Focusrite Control | Front panel Inst button or switch in software |
| Auto Gain |
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| Front panel Auto button or switch in software |
| Clip Safe |
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| Front panel Safe button. |
| AIR function |
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| Front panel switch or via Focusrite Control | Front panel Air button or switch in software |
Analogue Outputs
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Balanced Outputs | 2 x balanced ¼” TRS jacks on rear panel | 2 x ¼” TRS jacks on rear panel | 2 x 1⁄4” TRS jacks on rear panel | Two rear-panel Neutrik®6.35mm (1.4″) TRS jack sockets |
| Headphone Output | ¼” TRS jack on front panel | ¼” TRS jack on front panel | 1⁄4” TRS jack on front panel | Front panel stereo 6.35mm (1.4″) TRS jack socket |
| Main Output Level Control | On front panel | On front panel | On front panel | Front panel analogue control with pre-fade output level meter |
| Headphones Level Control | On front panel | On front panel | On front panel | Front panel analogue control |
Other I/O
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| USB | 1 x USB 2.0 Type B connector | 1 x USB 2.0 Type B connector | 1 x USB 2.0 Type C connector | One USB 2.0 Type-C connector for data and power |
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| 900mA |
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| One USB Type-C power connector – 5V DC |
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| 4.5W |
Power options
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Power from computer | USB-B | USB-B | USB-C | USB-C |
| Direct power | No | No | No | 5V DC 1.5A USB-C |
Front Panel Indicators
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Channel Selection |
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| White/Green LEDs for channels 1 and 2 |
| Select button |
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| White/Green Select LED |
| 48V |
| LED (within 48V button) | LED | White/Green 48V LED (depending on the selected channel) |
| Inst |
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| 2 x LEDs | White/Green Inst LED (depending on the selected channel) |
| Auto |
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| White Auto LED to initiate Auto Gain |
| Clip Safe |
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| White/Green Safe LED (depending on the selected channel) |
| Air Mode |
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| 2 x LEDs | White/Green Air LED (depending on the selected channel) |
| Output Level Meter |
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| Three-colour LED ring around Output control. |
| USB |
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| Green USB LED |
| Direct Monitor |
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| 2 x LEDs | Three-state LED |
| USB Power |
| LED | LED |
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| USB power & connected | LED |
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| Gain halos |
| Colour-coded LED rings (concentric with GAIN controls) | Tri-colour LED rings (with GAIN controls) |
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| Gain controls | Colour-coded LED rings |
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Weight and Dimensions
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Weight | 500g (1.1 lb) | 600g (1.32 lb) | 470g (1.04 lb) | 595g (1.31 lb) |
| Height | 45 mm (1.77“) | 45 mm (1.77“) | 47.5 mm (1.87“) | 47.5mm (1.87″) |
| Width | 175 mm (6.89”) | 145 mm (5.7“) | 175 mm (6.89”) | 180mm (7.09″) |
| Depth | 100 mm (3.94”) | 115 mm (4.53“) | 99 mm (3.89“) | 117mm (4.60″) |
Environmental
| 1st gen | 2nd gen | 3rd gen | 4th gen |
| Operating Temperature | | | | 40°C / 104°F Maximum ambient operating temperature |
| Casing material | Aluminium | Aluminium | Aluminium | Recycled aluminium |
