Single-ended Class-A

The circuit layout of the ROWEN preamplifier is based on the Single-Ended Class-A technology. This layout is known from the tube amplifiers and has relevant benefits over conventional transistor layouts. Single-Ended Class-A circuit has no crossover distortion, small signals are fully respected with all the details and the music is amplified in its natural purity.

Core of the development was the perfect dynamic sensitivity of the input stage to the importance of the dynamic signal conversion and the psycho-acoustic principles. Only like this a preamplifier can transfer music signals from all sources (CD, Phono, ...) with full dynamics and transparency. Special ODS switching circuits of the input stage (optimal dynamic sensitivity) provide a dynamic sensitivity that is up to 10 times better than in the usual transistor circuits and is still 2-3 times higher than in triode tube circuitry.

Absolute PHONO MM/MC preamplifier full discrete Single Ended Class-A circuit 2 independently adaptable MC inputs 1 MM input external power-supply needed, cascadable with Absolute PRE executions:

Absolute PRE preamplifier full discrete Single Ended Class-A circuit Cinema-Direct input with priority optional: phono input for MM and MC external power-supply needed Links: manual (PDF) executions:

SmartPRE preamplifier automated preamplifier with Audio-Sense ultra-sensitive Single-Ended-Class-A input circuit discreet output-stage individual volume-setting for every input learn function for IR-remotes Links: manual (PDF) executions:

L'Absolute PRE preamplifier full discrete Single Ended Class-A circuit Cinema-Direct input with priority optional: phono input for MM and MC external power-supply needed executions:

PP06 MM/MC preamplifier full discrete Single Ended Class-A circuit MM (47kΩ) and MC (100, 500, >1000Ω) switchable external power-supply included executions:

PR2 preamplifier full discrete Single Ended Class-A circuit Cinema-Direct input with priority optional: phono input for MM and MC external power-supply needed Links: manual (PDF) executions:

SP1 smart preamplifier automated preamplifier with Audio-Sense ultra-sensitive Single-Ended-Class-A input circuit individual volume-setting for every input learn function for IR-remotes Links: manual (PDF) executions: