Specs

Keyboard
iRig Keys 2: 37 mini-keys with velocity
iRig Keys 2 Pro: 37 full-size keys with velocity
Connections
Device Connector: micro-USB
MIDI Input: 2.5mm TRS Jack
MIDI Output: 2.5mm TRS Jack
Headphone Stereo Output: 1/8" TRS Jack
External Pedal Input: 1/4" TRS Jack
Controls
Volume knob
Octave up/down buttons
Program up/down buttons
Setup button
1 assignable data push encoder
4+4 assignable knobs
Common
Conversion: 16 or 24-bit D/A
Sampling Rate: 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz
Power: USB bus powered when used with computer or mobile device, USB power supply or USB battery packs* (see note)
* Note: iRig Keys 2 sinks very little current from the power source to maximize battery life. However, some USB battery packs may automatically switch off when the load is very light. If you plan to use iRig Keys 2 in stand-alone MIDI mode powered by an USB battery pack, make sure you use one that can stay ON even when nothing is connected.
Package includes
iRig Keys 2 or iRig Keys 2 Pro keyboard (depending on the version)
Lightning to micro-USB connection cable (60cm/23.6")
USB-A to micro-USB connection cable (60cm/23.6")
2.5mm TRS male to MIDI female adapter (10cm / 3.9")
Dimensions
iRig Keys 2

Size: 518mm/20.4" x 139mm/5.5" x 54mm/2.13"
Weight: 0.87kg/30.7oz
iRig Keys 2 Pro

Size: 605mm/23.8" x 212mm/8.4" x 77mm/3.03"
Weight: 1.87kg/66oz
Compatibility
iOS Devices
Compatible with iPhone XS Max, iPhone XS, iPhone XR, iPhone X, iPhone 8 Plus, iPhone 8, iPhone 7 Plus, iPhone 7, iPhone SE, iPhone 6s Plus, iPhone 6s, iPhone 6 Plus, iPhone 6, iPhone 5s, iPhone 5c, iPhone 5, iPad Pro 10.5-inch, iPad Pro 12.9-inch (2nd generation) , iPad Pro 9.7-inch, iPad Pro 12.9-inch (1st generation), iPad mini 4, iPad Air 2, iPad mini 3, iPad Air, iPad mini 2, iPad mini, iPad (6th generation), iPad (5th generation), iPad (4th generation), iPod touch (5th generation). iOS 6 or later is required.

Also compatible with iPad Pro 11-inch (3rd generation) and iPad Pro 12.9-inch (3rd generation). USB-C to micro-USB cable (sold separately) is required.

Also compatible with all newer iPhone, iPad and iPod touch models.

Computers
Mac®: macOS® 10.6 or later. One free USB port.

Windows®: One free USB port. For low latency, the IK Multimedia's iRig audio driver must be installed. Download the iRig ASIO driver here.

image
Android Devices
Compatible with Android devices running Android 5 or later and with USB digital audio capabilities. micro-USB-OTG to micro-USB cable (sold separately) or USB-C to micro-USB cable (sold separately) is required.