Steinberg UR-RT4 robust all metal casing, portable 6-in/4-out USB 2.0 audio and MIDI interface for PC, Mac, and iOS that features switchable Rupert Neve Designs (RND) transformers on its front four XLR inputs, D-PRE preamps, DSP-powered zero-latency monitoring with effects, and high-resolution 24-bit/192 kHz recording quality. The RND transformers add a desirable rich harmonic content and natural distortion for a musical, expressive sound, especially for vocals and instruments, while the switchable option provides versatility for a clean sound. Its solid metal construction makes it durable for both studio and mobile use.

This is an amazing audio interface with the coveted Rupert Neve Transformers and has fantastic Yamaha DSP FX (EQ, Compression, Drive and Reverb) that can be applied in Monitor or Recorded mode. Artists love being able to have latency free FX on their vocal whilst tracking.

It is currently valued at $850AUD+ new if you can find one and is currently selling on Ebay for $500-$600 USD or on FaceBook for $670-$800 AUD. I am only selling as I have upgraded to a Neve 1073SPX-D Interface and MOTU848. The unit has only been used in my home studio in a smoke free environment. Can post at buyers expense, no worries.