m Powerful 11-parallel push-pull output stage in each channel delivers linear power into loads as low as one ohm m Input stage with MCS
topology m Current feedback circuit combines excellent sound quality with total operation stability m Bridged connection mode allows upgrading to true monophonic amplifier m Massive Super Ring toroidal transformer rated for 1.5 kVA m Printed circuit boards made from Teflon material
A stereo power amplifier with impressive punch: 1,000 watts into 1 ohm
MCS technology in input stage improves S/N ratio, distortion ratings and other characteristics. 11 pairs of wide-band high-power transistors in parallel push-pull configuration for each channel. Power supply with massive 1.5 kVA
toroidal power transformer supports linear power down to impedances as low as one ohm. Teflon PCBs with low dielectric constant and minimum loss.
Note 1:
The output stage uses high-power transistors with a rated collector dissipation of 150 watts and collector current of 15 amperes. These devices boast excellent
frequency response, current amplification linearity,
and switching characteristics. The transistors are arranged in an 11-parallel push-pull configuration
(Figure 1) for ultra-low impedance and mounted on a massive heat sink made from diecast aluminum. This assures effective heat dissipation and allows the amplifier to effortlessly handle very low impedances.
Power linearity is maintained down to loads as low as
1 ohm, which demonstrates the impressive capabilities of this amplifier.
Low amplifier output impedance
When forming the load of a power amplifier, a loudspeaker generates a counterelectromotive force that can flow back into the amplifier via the NF loop. This phenomenon is influenced by fluctuations in speaker impedance, and interferes with the drive performance of the amplifier. The output impedance of a power amplifier should therefore be made as low as possible by using output devices with high current capability. This absorbs the counterelectromotive force generated by the voice coil and prevents the occurrence of intermodulation distortion.
MCS topology in input stage drastically improves
S/N ratio, distortion, and other characteristics
The input stage features Accuphase's original MCS
(Multiple Circuit Summing-up) design. Three separate
Output current (A)
Note 2:
??? ?????? ?????? ?????? ??????? ??????">
