5
listening experience (in 5 channel mode only).
• PowerGrid Power Supply Design - All power supply components are located near one another,
for the shortest possible current path and are connected by thick, wide PCB traces, which ensures
rapid, high current delivery. The entire power supply is isolated on one side of the circuit board
while the audio stage is located opposite it, guaranteeing minimal noise.
• Ultra-Low ESR Capacitance Bank - 24 miniature “stiffening” capacitors ensure rapid power
delivery for dynamic peaks. Multiple small input power capacitors are used to provide a lower ESR
(Equivalent Series Resistance), which means more power, faster.
• Smart Thermal Rollback - Most amplifiers shut off when they get too hot. In the unlikely event the
Reference705 reaches 85° C, it will gradually roll back its average power (without affecting the
dynamics). Once the amplifier has cooled off, it returns to full power output. If overheating should
continue, a second thermal sensing protection circuit will shut off the amplifier if the heatsink
reaches 95° C.
• Unregulated Power Supply - 4 ohm power ratings are measured at 12 volts, which means
substantially greater output in the real world when the vehicle is running, where voltages range
from 13.6 to 14.4 volts. Dynamic capability of the unregulated power supply is vastly greater than
that of a tightly regulated power supply.
• Fault Monitor LED on the front panel notifies you of a blown power supply fuse.
• 1/2 Ohm Subwoofer Drive Ability - The Reference705 subwoofer channel is designed to be stable
into any impedance, down to 1/2 ohm.
• Six Dual Discrete Class A Drive Stages - Over six times the drive current of most amps, which
guarantees maximum performance into any load.
• Drive Delay
TM
Muted Turn-on/off Circuit - A unique circuit which completely eliminates amplifier-
related turn-on/off noises.
• Flexible Input Sensitivity accepts voltages from 100 mV (40 mV on the subwoofer channel) to 2.5
V, which permits maximum output from the amplifier with virtually any source unit.
• Balanced Input Design for added immunity to noise caused by component and vehicle electrical
system interaction.
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