About “Hyper Class A”

The Dussun V series is a new kind of large power hyper class A integrated amplifier. The “Hyper Class A”  is a “Green” Class A solution, whose technically successful adaptive-bias circuit achieves the extra large class A power output objective under conditions of low-power consumption and low heat producing. The adaptive-bias circuit with an ideal specification permits the amplifier to maintain class A mode output even if the speakers’ impedance drops largely and output power increases several times. This situation is different from the traditional pure class A amplifiers’ inevitable situation of returning to class B when the speaker load impedance goes down, and is much close to the ideal class A amplifier essence.

Overview of V8i integrated amplifier

The V8i is an extension of Dussun’s high-end product line. The objective of the development of the V8i, built on mature Dussun products, is:

●  improve sound quality completely;

●  enhance the power output stage driving; and,

●  control capacity upon speakers.

Special design features of the V8i include: the output stage peak current was designed up to 90 A, and the transformer capacity per channel was designed up to 1,000 VA. In order to increase sound quality, and to modify the V8i harmonic spectrum for much lower odd order harmonic wave energy, V8i employed the adaptive-bias circuit with an ideal specification.

Its multi-stage power supply and system loop not only increased the V8i signal-to-noise-ratio to a higher level, but also suppressed the AC power source hum which many times contaminates the purity of the music under a large power output, as well delivered extreme high purity and silence of aural feeling while playing strong dynamic music segments.

The inner configuration of the V8i followed Dussun’s successful full-symmetrical style. This effective configuration is essential to make the V8i achieve a large power output and low noise objective.

There is an independent dedicated protection circuit with complete functionality for per channel, which can auto-diagnose probable overload and malfunction, then auto-protect accordingly.

The preamplifier stage and power amplifier stage are open to the user, allowing the user to use V8i’s either preamplifier stage or power amplifier stage. For general use, V8i’s preamplifier stage and power amplifier stage were linked by a pair of link pins. If the link pins are removed, it is easy for the user to use either V8i’s preamplifier stage or power amplifier stage respectively. The volume control is built in the preamplifier stage, so the preamplifier output signal level is controlled by the volume control knob.

As a terminal open for the user, the preamplifier stage is driven by a high performance low inner resistance buffer, which can drive many kinds of power amplifiers with more than 600 Ohm input impedance. The volume is not controlled by the volume control knob if the V8i’s power amplifier stage is operated solely.

The IR (infrared) Remote Control can be used to control the V8i’s volume and input signal selection.

 True Dual Mono configuration
 Output power: 250W@8Ω, Class A
                           500W@4Ω, Class A
 Infrared remote control
 The preamp and  power amp stages may be used separately
 Dual Mono ultra-low-noise toroidal transformer
 Over 60,000 MFD of filter capacitance per channel
 Minimal internal wiring
 Ultra-short signal path
 Non-magnetic, non-resonant aluminum cover
 Non-invasive protection system
 Microprocessor-controlled passive volume potentiometer
 High quality. double-sided printed circuit boards
 Van den Hul  CS-122 HYBRID loudspeaker cable  for power  transfer
 Exclusive custom Dussun gold-plated high-current audio connector for
   amplifier and loudspeakers

Specifications:

Preamplifier

Amplifier

Overall