XINDAK XA8800MNu Instructions Manual - Introduction
3
XA8800MNu is a mono power amplifier, with full symmetric current negative feedback structure. This model offers the
user quality sound reproduction and elegant styling also features excellent look.
The amplifying circuitry design follows the well appraised current negative feedback structure, featuring the full
symmetric and full complementary circuit. The most outstanding advantages of this circuitry are powerful drive, low
distortion, rich dynamics, excellent controlling ability, reliable work and good sound. The whole amplifying circuitry can be
divided into three stages: the first stage adopts quality Motorola MJE350/MJE340 geminate transistors, the second
stage adopts Toshiba 2SC517/2SA1930 geminate transistors and the output stage uses three pair of Sanken
2SC3264/2SA1295 high current geminate transistors. Therefore, this amplifier is ensured of power driving current.
The materials are very select, especially some audio-use-only and world famous capacitances are choicely used in
the audio loop. It uses imported relay to switch the coaxial channel and balanced channel. The whole power supply
system is consisted of the 350W high quality annular transformer as the core, the 50A high speed bridge rectifier and
60,000 F Rubycon capacitance. The power supply for voltage amplifying is supplied by the filtered and rectified separate
windings of the transformer, which have high speed, low noisy, low impedance and strong shielding ability. Besides, the
separate design of the two windings can rapidly reduce the intermodulation disturbance and thus increase the purity of
the sound.
Additionally, this unit has perfect self-protection function. The core of the protect circuitry takes charge of the protect
functions against output over current, over voltage and on/off surge with an indicator which will glitter in case of protect. IC
was used as the controlling core, therefore, the general sensitivity and reliability is rapidly increased.
Sound features: The excelsior circuitry and select materials endow this unit with mellow sound, excellent bounce in
low and powerful drive. Besides, it is also dynamic, with extended soundstage. Sound of this unit is transparent, noble,
elegant and vivid, especially full of rich changes.
2.1 Product Features
Introduction
Chapter 2
XA8800MNu
POWER
POWER