Denon PMA-2000R User Manual download pdf

PMA-2000R

Audiophile Integrated Amplifier

The PMA-2000R uses dual power transformers to provide extended high current capability with substantial

power output.The chassis is divided to enable efficient placement of circuits so that left and right signal paths

do not interfere with each other and negatively affect sound quality between the two channels.

■ 80 W + 80 W. More Power, and Greater

Dynamic Range via UHC Ultra High Current

Single Push-Pull Circuitry

A high-current UHC-MOS amplification device has been used

to boost the power supplied to the UHC single push-pull circuit-

ry. This is an innovative design by DENON that finally resolves

the conflicting problem of how to produce a solid capacity to

drive the speakers while preserving the delicate details of the

music. The PMA-2000R provides 80 watts per channel into

8 ohms with nearly double that into 4 ohms to drive virtually any

speaker system. Superior current linearity ensures a stable

supply of current to the speakers, bringing out all of the dynam-

ic range irrespective of impedance or efficiency.

■ The UHC-MOS High-Current Amplification Device

To obtain the ability to bring out all the delicate nuances of

sound and the need for dynamic speaker drive, the

PMA-2000R has adopted a high-current UHC-MOS amplifi-

cation device capable of delivering a peak current of 120A to

the output stage, as much as 3~10 times greater than that of

conventional MOS-FET devices. The current supply capacity

of the UHC-MOS has been improved to exceed even that of

bipolar transistors while preserving the high-quality sound of

MOS-FETs. This ideal amplification device also incorporates

single push-pull technology to eliminate variations in amplifi-

cation operation.

■ Leakage Canceling Dual Power Transformers

The PMA-2000R features dual parallel-connected twin trans-

formers with vastly improved characteristics in the magnetic

and coiled wire circuits as originally developed for the

DENON POA-S1 monaural power amp. The transformers

have also been “leakage canceling” (L.C.) mounted in order

to eliminate mutual interference caused by magnetic fields

and other factors. As a result, leakage flux from the power

transformers, a potential source of noise, is suppressed to a

minimum, enabling the PMA-2000R’s power supply section

to supply clean, high-quality DC energy to the output stages.

Comparison of single push-pull output current characteristics

(Source: DENON)

UHC single push-pull BJT single push-pull

Comparison of transformer leakage flux

(Source: DENON)

Two LC mounted transformers Two transformers positioned

at same polarity

Leakage cancelling (L.C.) mounted dual power transformers

NEW MODEL INFORMATION

1 2

PMA-2000R 1

Summary of Contents

Page 1 - PMA-2000R

PMA-2000RAudiophile Integrated AmplifierThe PMA-2000R uses dual power transformers to provide extended high current capability with substantialpower o

Page 2

Specifications Power Amp SectionRated output, both channels driven 80 W + 80 W (8 ohms, 20 - 20 kHz, 0.07%THD)160 W + 160 W (4 ohms, DIN 1 kHz, 0.7%T

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Denon PMA-2000R User Manual

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