In recent years, the audio industry has produced a large number of new, high-quality multi-channel audio formats, which place considerably higher demands on the professional production environment in the studio. The Blu-ray format, for example, makes it possible to store an increased number of discrete audio channels with high resolution (7.1). To meet these requirements, Neumann has created a 7.1 High Definition Bass Manager with the newly developed electronics of the KH 810, which fulfils all studio requirements from mono to the latest 7.1 HD formats. With eight analogue input channels, flexible connection is guaranteed in the modern studio environment. Four switchable LFE modes guarantee compatibility with all formats and industry standards. Extensive acoustic adaptation options and a frequency separation of 24 dB/oct allow optimum integration into the existing studio acoustics. The built-in 8-channel volume control in conjunction with the optionally available wired remote control can be used to realise source-independent central system control. The electronics of the KH 810 can be detached in order to adapt the cabling flexibly. The latest amplifier technology and extensive research and optimisation of the speaker chassis used have resulted in the highest degree of bass precision and sound neutrality. The low-resonance cabinet and the flow-optimised bass reflex channels ensure dry and extremely low-distortion bass reproduction down to 18 Hz, even at high levels. Multisubwoofer systems can easily be set up using the sum output of the electronics. This allows speaker arrangements such as Plane Wave Bass Arrays TM (PWBA) to be implemented, which dramatically improve the lateral mode behaviour in the listening room via cylindrical wave generation. The KH 810 was developed as an extension of our extensive range of studio monitors. It can be used alone or in combination with several subwoofers to realise large systems with very high maximum level requirements. The KH 810 is therefore the ideal low-frequency extension for music, broadcasting and post-production for use in tracking, mixing and mastering. It can preferably be positioned close to the wall or, thanks to the bass reflex ports on the front, in the wall and can be freely combined with all our monitors in multi-channel systems.