Accuphase C – 3850
Accuphase TOP model, vjerojatno NAJBOLJE solid state pretpojačalo svijeta.
The new Precision Stereo Preamplifier C-3850 continues the challenge and raises the bar even further, bringing together the entire wealth of preamplifier know-how gained by Accuphase over the years. In construction as well as circuit design, it incorporates latest technology realized with components selected through a thorough review process including extended listening tests. The result is an audio instrument that admits no compromise in the pursuit of peerless performance for musical mastery.
The C-3850 features a further evolved version of this principle, called “Balanced AAVA”, with two AAVA circuits driven in a parallel balanced configuration. AAVA does not “turn down” the volume in the ordinary sense. Rather, it switches a combination of V-I amplifiers as required in order to directly change the amplifier gain and thereby achieve the desired volume. This revolutionary approach eliminates impedance changes as well as adverse effects from noise and other factors.
The entire path for all signals from the input connectors to the outputs is fully balanced, and signal purity is further elevated by the use of ultimate-quality parts and materials, ensuring electrical characteristics and sonic excellence of the highest order. With its no-holds-barred use of resources, and its bold realization of latest circuit design, the C-3850 is an analog preamplifier that redefines the state of the art and points the way towards the future.
Revolutionary low-noise “Balanced AAVA Volume Control”
High-rigidity, high-accuracy volume knob sensor mechanism
Separate high-efficiency toroidal power transformers for left and right channels
Selectable preamp gain
Fully modular construction with separate left/right units for each amplifier stage
Logic-controlled relays for shortest signal paths
Independent phase selection for each input position
Printed circuit boards made from glass cloth fluorocarbon resin
Massive wood cabinet with natural grain finish
|Frequency Response||BALANCED LINE INPUT3 – 200,000 Hz +0, –3.0 dB20 – 20,000 Hz +0, –0.2 dB|
|Total Harmonic Distortion (for all inputs)||0.005%|
|Input Sensitivity, Input Impedance||For rated output:balanced 252 mVline 252 mVFor 0.5 V outputbalanced 63 mVline 63 mVimpedancebalanced 40 kΩline 20 kΩ|
|Rated Output Voltage, Output Impedance||BALANCED/LINE OUTPUT 2 V 50 ohms|
|S/N Ratio||input shorted, IHF-A weighingS/N ratio at rated output:balanced 113 dBline 113 dBS/N ratio (EIA)balanced 110 dBline 110 dB|
|Maximum Output Level (0.005% THD, 20 – 20,000 Hz)||BALANCED/LINE OUTPUT 7.0 VRECORDER REC (with BALANCED input): 6.0 V|
|Maximum Input Level||BALANCED INPUT: 8.0 VLINE INPUT: 6.0 V|
|Minimum Load Impedance||BALANCED/LINE OUTPUT: 600 ohmsRECORDER REC: 10 kilohms|
|Crosstalk||–90 dB or above (10 kHz) (EIA)|
|Gain (gain selector: 18 dB)||BALANCED INPUT → BALANCED OUTPUT: 18 dBBALANCED INPUT → LINE OUTPUT: 18 dBLINE INPUT → BALANCED OUTPUT: 18 dBLINE INPUT → LINE OUTPUT: 18 dBBALANCED/LINE INPUT → RECORDER REC: 0 dB|
|Loudness Compensation||1: +2 dB (100 Hz), 2: +4 dB (100 Hz), 3: +6.5 dB (100 Hz)|
|Power Requirements||AC120 V/230 V, 50/60 Hz(Voltage as indicated on rear panel)|
|Power Consumption||55 wats|
|Maximum Dimensions||Width 18-3/4”Height 6-1/8”Depth 16-1/48”|
|Mass||54.7 lbs net70.5 lbs in shipping carton|