The Studio Channel"s Class A tube preamplifier is based on our original BlueTube DP preamp and features a high-output 12AX7 tube that operates on voltages double that of other preamplifiers in its class. The result is lots of headroom and big tone. Gain and Tube Drive controls enable a wide range of sounds, from transparent and clear to edgy and overdriven. This bundle also includes (2) 20 ft XLR cables to connect a microphone to the Studio Channel and send balanced signal out to an interface or console, (1) 10 ft TS Instrument cable to connect a guitar or bass directly to the Studio Channel using it as a Tube-DI, and (1) 6 ft TRS cable for additional balanced out connectivity. Integrate this great tube channel strip into your live or studio rig!