SA-31 applies diamond differential circuit, working on + / - 35VDC
high voltage power supply , thus have high linear characteristic and
high dynamic . This circuit has always
been highly praised by users with its excellent
performance and musical of whole frequencies. Other circuits tend
to lose details and clarity when they get the musical flavor, the SA-31, however, retains rich details and high clarity with its
abundant music flavor with wide and deep sound stage . Diamond differential circuit has not only more
profusion of whole frequency harmonic, but also an extremely clear
sense of space and a correct delivery of speed.
SA-31 without DC servo circuit , thus
it not only achieves the best performance on low frequency response and
control power, but also has no sensible influence on the tone quality.
difficult to building.
output stage use of Cascode deforming circuit brings the merits of
a good linearity and high-speed attribute. For
larger power drive, the output stage applied two pair 15A / 150W Toshiba
transistors , power output 10,000mW @ 40 ohm, no matter for most headphone in world.
performance transformer are used to supply power
separately for the audio and control circuit.
2 groups of
high-quality and high output voltage class A parallel connection PSUs .
class A parallel connection PSU has very high input impedance to avoid
pulse through the PSU from affecting the preamp and low
output impedance with very fast speed and high linear, so it is a very
another linear PSU for the
display and control parts, avoid the disturbances through power line
from affecting the amplifier.
A power supply.
SA-31 with remote
control, the volume control applied resistors components, can
avoid channel imbalance and improve on sound quality than normal
The volume control is also different from conventional
technology. Conventional volume control technology is
the volume control implement in the analog amp
input stage through a volume pot to reduce the signal . The
volume pots quality effect the sound quality direct , the low
quality volume pot cause lost the detail and channels imbalance
cause the soundstage distortion . Even the high
performance volume pot still cause the detail lose. Whatever
quality volume pots, must cause the S/N worst .
In SA-31, the volume applied parallel connection control
technology, the audio signal had not through the volume pot feed
to the amp . So its quality have not effect by the volume pot
SA-31 applied two channels
digital control relays based volume control. The volume board through changing the
DALE resistors to control the volume for avoid channels
imbalanced ,achieve the best performance and sound quality of
SA-31 have 100 steps
volume level control in both high gain and low gain mode. The
total 200-step volume control ensures smooth control of the volume