Denon AVR-S640H vs Sherwood RX-4508

Denon AVR-S640H

Denon AVR-S640H review

Mar 05, 2020

The Denon AVR-S640H is an affordable 5.2-channel receiver, meaning that it’s necessary to use 5 speakers, plus a subwoofer or a couple of them for getting optimal surround sound. It’s als...

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Rating 5 5

Common

Product

Denon AVR-S640H
Sherwood RX-4508

Model

AVR-S640H
RX-4508

Brand

Denon
Sherwood

Rating

4.1 of 5
4.0 of 5

Reviews

145
384

Amplifier

Total output power

560 W
200 W

Output power per channel

75 W
100 W

Output impedance per channel

8 Ohm
8 Ohm

Frequency response

20 Hz-20 kHz
40 Hz-20 kHz

Total harmonic distortion

0.08 %
0,01

Number of channels

7
2

Signal-to-noise ratio

98 dB
93 dB

Functions

Digital player

Internet radio

Network audio player

Audio formats

AAC

AIFF

Apple lossless

FLAC

MP3

WAV

WMA

Built-in decoders

DTS:X

Dolby Atmos

Dolby digital plus

Dolby surround

Dolby true HD

Built-in display

Type

fluorescent
fluorescent

Colour

black
black

Connectivity interfaces

Bluetooth

Wi-Fi

IEEE 802.3

IEEE 802.3u

Signal processing

HDMI pass-through

up to 4K

Video conversion/scaling

3D pass-through

Upscaling via HDMI

Connector type

AV inputs

6
has not

Optical digital inputs

2
2

Coaxial digital inputs

1
1

HDMI inputs

6
has not

HDMI outputs

1
has not

Optical digital outputs

has not
has not

Coaxial digital outputs

has not
has not

Subwoofer outputs

2
has not

USB

1
has not

Phones

1
1

Media content source

Bluetooth

Network

USB-host

Radio

Tuner type

digital
digital

Tuner bands

AM/FM
AM/FM

Preset station

40
30

Additional features

A-B speaker switch

Three-zone capability

Advanced sound retriever (ASR) technology

Apple air-play support

Audio return channel (ARC)

Bi-amplifying

Auto power off

Pure direct mode

Dual-zone capability

Smartphone remote control

Sound features

Audio D/A converter

24bit / 192kHz
24bit / 192kHz

Surround sound effects

has not

Surround system class

7.1 channel
2.0 channel

Digital content protection

HDCP 2.2
has not

Clock

Built-in clock

Sleep timer

Power device

Operational power consumption

400 W
230 W

Standby power consumption

0.1 W
0.3 W

User manual

Manual

Dimensions

Dimensions

13.3 x 17.1 x 5.9 inches
14.8 x 17.1 x 5.5 inches

Weight

18.74 pounds
16.31 pounds
Denon AVR-S640H
Sherwood RX-4508
Denon AVR-S640H
Sherwood RX-4508

AV receivers HelpToChoose comparison rating

  • better
  • worse
  • 22.6
  • 12.6
  • 22.6Denon AVR-S640H
  • 12.6Sherwood RX-4508

Denon AVR-S640H is better receiver in this comparison. Check Denon AVR-S640H price