Stereocheck Reviews:

Accuphase C-3850: High quality preamplifier

The Accuphase C 3850 represents the pinnacle of Accuphase’s 45 years of experience. The Accuphase C 3850 is an ultimate quality preamplifier that features a patented analog balanced volume...

Accuphase C-3850
Accuphase C-3850

The Accuphase C 3850 represents the pinnacle of Accuphase’s 45 years of experience. The Accuphase C 3850 is an ultimate quality preamplifier that features a patented analog balanced volume control – AAVA. The AAVA processor changes the signal level in steps depending on the position of the volume control. The latest AAVA volume control ensures incredibly smooth sound and a completely comfortable listening experience at different volume levels. The volume control knob is machined from a high quality solid piece of aluminum. The Accuphase C 3850 body is made of 8 mm high quality anodized aluminum.

Accuphase C-3850 1.jpg

The Accuphase C 3850 power supply contains two powerful toroidal shielded transformers filtered by 12 capacitors of 10,000 uF each. The resulting current gives the circuit a variable gain, which controls the volume of the music signal. The corresponding current is combined and converted into voltage at the inverter (IV) before being sent to the next stage. Amplifiers directly change the gain and allow you to change the volume without changing the characteristic impedance, as well as noise and various distortions.

Accuphase C-3850 2.jpg

The entire audio signal path from the preamplifier input to the amplifier output is completely balanced. This preamplifier uses nine signal amplification blocks in each channel.
The printed circuit boards of the amplification units are made of fluorocarbon fiberglass fabric impregnated with fluorocarbon resin. The boards are plated with copper and gold. This housing design reliably protects circuits from various types of interference and interference, and also has excellent anti-vibration properties. All boards are made of fluorocarbon resin, which has a very low dielectric constant and minimal losses.

Accuphase C-3850 3.jpg

The Accuphase C 3850 has a signal phase indication. You can select the phase individually for each input. If the indicator is on, phase 180, and if the indicator is off, phase 0. The built-in high-quality headphone amplifier has three gain positions Low, Mid and High. This preamplifier is mounted on anti-vibration feet, which are made of high carbon cast iron. The outstanding performance and design of the Accuphase C 3850 preamplifier delivers realism that will simply take your breath away and blow you away with sound.

Characteristics Accuphase C 3850

Playback frequency 3 – 200000 Hz
Maximum input/output gain 18 dB
Signal-to-noise ratio > 110 dB
Total harmonic distortion < 0.0005%
Circuit design Fully balanced
XLR inputs 4 pairs
RCA inputs 6 pairs
XLR outputs 2 pairs
RCA outputs 1 pair (for a cassette recorder), 2 pairs from a preamplifier
Output impedance 600 Ohm
Channel separation 90 dB
Power consumption 55 Watt
Remote control Included
Headphone output Jack 6.3 mm
Weight 25 kg
Dimensions (WxHxD) 477 x 156 x 412 mm