The iRig® Keys I/O series evolves the concept of traditional controllers as the only one available on the market that integrates 25 or 49 full sized keys together with a fully-fledged professional audio interface featuring 24-bit audio up to 96kHz sampling rate, balanced stereo and headphone outputs, plus a combo input jack for line, instrument or mic input (with Phantom power.) Together with an audio interface, iRig Keys I/O also packs all the controls you would expect from a premium controller including velocity sensitive multicolored pads and programmable touch-sensitive sliders, buttons and knobs for unique expressiveness and fast workflow. Both iRig Keys I/O 25 and 49 are also the smallest full sized keys on the market making them the best solution for working in small spaces and ideal when it comes to having a controller for traveling musicians, in addition to the consideration that they are the only truly mobile devices that can also work on AA batteries. Being certified Apple MFi keyboard controllers (“Made for iPod, iPhone, iPad,”) iRig Keys I/O are guaranteed to work out of the box with all iOS devices including the latest generation of iPhone 7, that does not have an audio output, thanks to the on-board audio interface. The included Lighting cable allows for straight plug-and-play with Apple iOS devices, the USB cable connects Mac and PC computers. SpecsiRig Keys I/O SpecificationsMicrophone InputMicrophone Type: balanced female 3-pin, XLR. Pin 2: hot / Pin 3: cold / Pin 1: groundMicrophone Input Level: from 6 mVpp to 1.4 VppMicrophone Input Impedance: 3.2 kOhmsGain Range: 46 dBPhantom Power: +48V ± 4VFrequency Response: 20 Hz - 20 kHz +/-1.5dBInput Noise: -100 dB RMSInstrument InputInstrument Input: unbalanced, Hi-Z, TS 1/4" Jack, Tip: signal / Shield: groundInstrument Input Level: from 30 mVpp to 6.9 VppInstrument Input Impedance: 1 MOhmsGain Range: 27 dBFrequency Response: 20 Hz - 20 kHz +/-1.5dBInput Noise: -100 dB RMSLine OutputLine Outputs: 2x balanced, TRS 1/4” Jack, Tip: hot / Ring: cold / Shield: groundFloating Balanced Outputs with automatic level compensation when working in unbalanced modeMaximum Output Level: +13 dBu into 600 Ohms balanced loadFrequency Response: from 10 Hz to 21 kHz (+/- 0.2dB)Output Dynamic Range: 102 dB(A)Output Impedance: 150 Ohms balancedStereo Headphone OutputConnector: 1/8" TRS Jack. Tip: right / Ring: left / Shield: groundHeadphone Level Power 100mW into 50 OhmsOther Input/OutputDC barrel: 1x DC barrel. For power and device charging.Device Connector: mini-DINExternal Pedal Input: 1/4" TRS JackCommonConversion: 16 or 24-bit A/D - D/ASampling Rate: 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHzPower:• USB bus powered when used with a computer• Battery powered (4xAA included) when used with an iOS device• DC power supply (not included, iRig PSU 3A sold separately)**KeyboardKeys: 25 or 49 (depending on the version) full-size keys with velocityPads8 velocity-sensitive multi color assignable padsControlsSlider strips for pitch and modulation (user programmable)Octave, program change and transport5 programmable touch sensitive encodersPackage includesiRig Keys I/O 49 or 25 keyboard (depending on the version)Lightning to Mini-DIN connection cable (60cm/23.62")USB to Mini-DIN connection cable (60cm/23.62")iPhone/iPad stand4 x 1.5V AA BatteryiRig Keys I/O 49 DimensionsSize: 693mm/27.3" x 208mm/8.2" x 65mm/2.6"Weight: 2.18kg/76.9oz (batteries excluded)