Denon PMA-2020AE Owner's Manual download pdf (Page 5)

Features

Advanced UHC-MOS Single Push-pull Circuit

The new generation UHC-MOS FET is employed for the power

ampliﬁer output stage.

The steady current is scaled up from 30 A to 70 A and the

instantaneous current from 120 A to 210 A.

The operation stability affected by the temperature ﬂuctuation is

improved by using the dual FET selected ﬁrst stage for the voltage

ampliﬁer stage. Furthermore, the phase property is stabilized up to

the high range by using the cascade bootstrap circuit.

Power Supply

To make the most of the Advanced UHC-MOS Single Push–pull

Circuit, this powerful power supply consists of a LC mount twin

transformer, schottky barrier diodes that have 50% more current

capacity compared to the conventional ones, and a custom block

type capacitor that is tuned for high-quality sound.

Flat Amp

A FET output ﬂat ampliﬁer of a full discrete conﬁguration that

has a high-quality local stabilizer power supply is included in the

preampliﬁer section.

Phono Equalizer

Even a user who is particular about analog records is satisﬁed

because the Phono Equalizer circuit for the FET input supports

MM/MC.

Cautions on handling

•Before turning the power on

Check once again that all connections are correct and that there are

no problems with the connection cables.

•Power is supplied to some of the circuitry even when the unit is

set to the standby mode. When going on vacation or leaving home

for long periods of time, be sure to unplug the power cord from the

power outlet.

•About condensation

If there is a major difference in temperature between the inside of

the unit and the surroundings, condensation (dew) may form on

the operating parts inside the unit, causing the unit not to operate

properly.

If this happens, let the unit sit for an hour or two with the power

turned off and wait until there is little difference in temperature

before using the unit.

•Cautions on using mobile phones

Using a mobile phone near this unit may result in noise. If that

occurs, move the mobile phone away from this unit when it is in use.

•Moving the unit

Turn off the power and unplug the power cord from the power

outlet. Next, disconnect the connection cables to other system units

before moving the unit.

•About care

•Wipe the cabinet and control panel clean with a soft cloth.

•Follow the instructions when using a chemical cleaner.

•Benzene, paint thinner or other organic solvents as well as

insecticide may cause material changes and discoloration if brought

into contact with the unit, and should therefore not be used.

Power Amp Direct

A Power Amp Direct input that can also be used for a standalone

power ampliﬁer is equipped, useful for combining with the audio

system and home theater system, etc.

Pre Out

A Pre Out connector is equipped that can extend the system’s

possibility by using another power ampliﬁer to drive a bi-ampliﬁer

with a speaker that supports the bi-wiring or adding a subwoofer

to upgrade the system.

Mechanical Ground

A chassis that has 6 discrete blocks shielded for each signal level

and a foot made of high density materials pursue the Mechanical

Ground concept, eliminating the inﬂuences caused by external

vibration and preventing vibration of the transformer, the internal

vibration source, from being transmitted to the ampliﬁer circuit.

Preparations

Operations

Information

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Denon PMA-2020AE Owner's Manual Page 5

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