The IBX-R4 is positioned right at the centre of the Auditorium Series. It has all of the virtues of the Avatar R4 with added refinement and sophistication by virtue of our proprietary high-frequency driver and its associated filter network. The IBX-R4 is a mature and compelling musical companion that rewards on every level; equally at home whether playing at low or high volume levels, on simple or complex music, driven by basic or sophisticated amplification. A confident all-round performer, all genres of music can be experienced to their full potential.
Each Auditorium is ideally suited to exploiting the inherent advantages of class A valve amplification, and has been designed and voiced with the output impedance (and damping factor) of zero/low negative feedback direct-heated Triode designs in mind. In smaller rooms, the 8 watts offered by a single-ended 300B design can be fully realised, however we recommend the use of amplifiers with 15 watts or more to exploit the full dynamic potential available on a broad range of music programmes. The dispersion characteristics of the Auditorium Series are such that they create a coherent soundstage even for listeners sitting significantly off-axis. This is emphatically not a ‘hot spot’ design.