Two Notes Audio Engineering OPUS Amp Simulator and DynIR Engine Pedal Multi-Channel Amp Sim, DynIR Engine, Amp DI, IR loader and Silent Stage Solution. OPUS is an end-to-end tone shaping Amp Simulator and DynIR Engine ushering in the next milestone evolution of the Two Notes ecosystem. Building upon the C.A.B. lineage - and their critically acclaimed digital cabinet simulation legacy - OPUS adds Pre & Power-Amp Tube-Stage Modeling (TSM), MIDI integration and a future proofed USP-C specification, empowering players of all walks of life with apex level tone in a go anywhere footprint. Tonally, every thing you demand from a state-of-the-art digital Amp Sim is here; whether it's a thundering high-gain onslaught, a sublime clean primed to serve as the foundation of a pedalboard rig or a mojo fueled Brit-inspired roar, each and very base is covered. OPUS is more than a masterpiece: it's a backline in your gig bag and a macrocosm of next level tonal excellence. Specifications Input / OutputAmp/Inst/Line Input:1/4″ jack unbalanced (TRS)Input Impedance:AMP :160kΩ unbalanced / 300kΩ balancedLINE : 37kΩ unbalanced / 55kΩ balancedINST. : 1MΩ unbalancedMax Level (No Input Pad):AMP: 26.1dBuLINE: 11.3dBuINST.: 2.8dBuMax Level (With Input Pad):AMP: 36.2dBuLINE: 20.8dBuINST.: 12.3dBuMax Admissible Power For Amplifier Connection:“IN LEVEL” Switch Set To “AMP”“TO SPEAKER” output connected to a speaker rated at 16ΩNo input pad: 15.2WWith input pad: 100W“TO SPEAKER” output connected to a speaker rated at 8ΩNo input pad: 30.3WWith input pad: 100W“TO SPEAKER” output connected to a speaker rated at 4ΩNo input pad: 60.5WWith input pad: 100WAux In:1/8″ (3.5mm) TRS jackInput Impedance: 29kΩTO SPEAKER Output*:1/4″ Jack balanced (TS)*Unprocessed, unbufferedDI Output*:XLR balancedMax level: 10dBuOutput Impedance: 600Ω*Protected against +48V phantom powerLine Output*:1/4″ (6.35mm) TRS jackMax level: 10dBuOutput Impedance: 600Ω*Not Protected against +48V phantom powerHeadphone Output*:1/8″ (3.5mm) TRS jackMax output power: 300mW under 100ΩOutput impedance: 33ΩUSB Connector:USB-C 2.0MemoryDynIR Capacity:64 DynIRMemory Card:256Mb Micro-SD included Up to 32Gb cards supportedDigital AudioAD/DA Converters:Studio-grade 24-bit / 96 kHzBandwidth (-1dB):30 Hz – 19 kHzDynamic Range ratio:101dBInternal Processing:32-bit floating-pointLatency:2.2 ms (Line Input to Line Output)PowerPower input connector:Connector: 2.1mm x 5.5mmPolarity: Center negativeVoltage: 12V DCCurrent: 200mAPower consumption: approx. 2WSupplied adapter:Connector: 2.1mm x 5.5mmPolarity: Center negativeInput Voltage: 100-240V AC , 50-60HzOutput Voltage: 12VdcMax. Current: 2000 mADimensions & Weight Width x Depth x Height*: 12.1cm x 10cm x 6cm – 4.8″ x 4″ x 2.4″ Weight: 450 g / 0.99 lbs *Including connectors and knobs