Audio Database

A804
Commentary

A800 series DC-configuration stereo preamplifier kit.

All circuits are discrete to ensure high sound quality.

The configuration is simple with only an equalizer amplifier and a flat amplifier, and the tone control circuit is omitted.
This eliminates as much as possible the adverse effect on sound quality caused by the complicated circuit.

Model Rating
Type Control amplifier kit
Output voltage Pre-out : 2 v (rated), 8 v (maximum, 0.006% distortion)
Total harmonic distortion factor Phono : not more than 0.006%
Tuner, Aux : 0.006% or less
Frequency characteristic Phono : 20 Hz to 20 kHz ± 0.3 dB
Tuner, Aux : 10 hz to 300 khz -1dB
Input sensitivity Phono:1.8mV
Tuner, Aux : 120 mv
Input impedance Phono : 50k Ω
Tuner, Aux : 65k Ω
Signal-to-noise ratio (IHF-A corrected) Phono : 80 dB or more
Tuner, Aux : 100 dB or higher
Attachment Subsonic filter
Attenuator
Monitor switch
External dimensions Width 290x Height 76x Depth 142 mm
Weight 2.3kg