Einstein "The Tube" Preamplifier
The Heart of the Einstein "The Tube" preamplifier is based on an entirely new concept in preamp design.  Proprietary circuitry in "The Tube" utilizes two twin triodes for each input circuit without the use of a standard selector switch, thereby eliminating a set of signal contacts. When heater voltage is applied to a particular set of input tubes, that circuit becomes active.

The Tube also includes another major advancement in preamplifier design with its highly perfected and transparent remote volume control - finally!!

Eight tubes are used for the balanced output stage, which has a 10V headroom, thus making it impossible to overdrive, and one for the tape buffer circuit. Chassis layout includes three-dimensional point-to-point wiring and a low impedance output eliminates signal and ultrasonic reflections. The overall result of these collective advancements is an ultra-quiet background with supreme musicality. 

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