Accuphase C-3900 Precision Stereo Preamplifier
To celebrate the 50th anniversary of Accuphase's founding, the development of a new flagship model to include the entire wealth of the company's experience was initiated. Now, after five years, the work has finally culminated. The C-3900 embodies an uncompromising amalgamation of technology and sensibility, boasting truly stellar performance and sound quality that brings in a new era of the preamplifier.
The Dual Balanced AAVA design with two balanced AAVA circuits packs punch with sonic excellence that is transparency itself. Volume adjustment is realized while keeping intact all the vibrant energy and richness of detail that is the lifeline of a captivating artistic performance. The supple elegance of music as reproduced by the top-of-the-line C-3900 is a riveting experience that shows the impressive depth of Accuphase know-how.
Warranty1-year manufacturer's warranty
- Dual Balanced AAVA volume control
- High-gain discrete current feedback type input amplifier
- ANCC technology minimizes noise and distortion
- Newly developed volume sensor construction
- Separate toroidal power transformers for left and right
- Newly developed filtering capacitors
- Separate unit amplifiers for left and right
- Printed circuit boards using glass cloth fluorocarbon resin
- Wood cabinet with natural grain finish
- High-performance headphone amplifier
Benefits of Accuphase C-3900 Precision Stereo Preamplifier:
Revolutionary AAVA volume control
Conventional preamplifiers attenuate the input signal by means of resistors and then amplify the result, which invariably leads to an increase in noise. AAVA on the other hand eliminates the entire step of resistor-based input signal attenuation. With this breakthrough principle, direct volume adjustment is performed through a combination of V-I (voltage-current) conversion circuits of different gain. As a consequence, there are no changes in impedance or frequency response and sound quality remains impeccable. Any changes in noise level depending on the selected volume position are kept to an absolute minimum, thereby realizing outstanding S/N ratio also at commonly used listening levels.
Dual Balanced AAVA takes AAVA to new heights
In the C-3900, the Balanced AAVA principle which involves two balanced-connection AAVA circuits is further elevated by driving two such units in parallel, resulting in the Dual Balanced AAVA topology with significantly improved electrical characteristics. Compared to previous models, the already excellent noise level is reduced by a further 30 percent.
High-accuracy, high-rigidity volume sensor construction
The volume sensor mechanism performs the task of detecting the angular position of the volume knob. Accuphase has developed the volume sensor in-house, using a massive aluminum block extruded and finished with utmost precision. The knob provides an utterly solid and smooth operation feel and achieves extremely accurate position detection. When using the Remote Commander, a motor drives the volume knob via a set of gears. Generally, gears produce a meshing sound when rotating, but this position sensor is designed so that the gears mesh with each other while always maintaining a constant pressure, which enables super quiet and comfortable volume adjustment.
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Technical Specifications of Accuphase C-3900 Precision Stereo Preamplifier:
|Brand & Model #||Accuphase C-3900|
|Total Harmonic Distortion
|Balanced Line Output
|Minimum Load Impedance