The 151 Musiccenter can be operated with a fixed output level into an existing system using a preamplifier, or alternatively using its variable output section and connected directly into power amplifiers or active loudspeakers. In addition to the knowledge gained from the development of the Reference Line 111 Musiccenter - and our experience since its launch - ideas, requests and suggestions from our customers in particular have been taken into account in order to develop a device that guarantees the highest level of acceptance and customer satisfaction.

ANALOG VOLUME CONTROL
The central element of the 151 Musiccenter is the analog volume control. This offers the essential advantage over the more common (and much easier to realize) digital volume control that even at lowest volumes the full resolution of the music is preserved without data reduction. In addition, the 151 Musiccenter can be connected directly to a power amplifier or active loudspeakers. Due to the increased output voltage in variable volume mode, no additional pre-amplifier is necessary, as its amplification stage is already inte- grated in the 151 Musiccenter. With these prerequisites, the 151 Musiccenter is ideally suited as the centerpiece for a flexible high-end system at the highest level. The analog volume control also enables the 151 Musiccenter to compensate for volume jumps between individual tracks of a playlist without changing the original dynamics of the tracks. During the ripping process each track is determined accord- ing to a listening model for medium volumes and stored as a correction value in an internal database. During playback, the corresponding correction value is loaded and fed into the analog volume control for seamless, balanced playback. SOPHISTICATED ANALOG CIRCUITRY
The Musiccenter 151 is completely constructed in elaborate balanced circuit technology and an exclusively DC-coupled signal path and the avoidance of distur- bance with coupling capacitors ensures a precise low-frequency reproduction, since there is no phase shift in the listening area.