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Ultimate Micro System

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Features - D-M40



Following in the footsteps of the multi-award winning D-M39S, the new D-M40 features serious Hi-Fi quality CD Receiver RCD-M40 along with optimized two-way speaker system SC-M40. For almost 20 years now, Denon’s M Series has been developed to meet the needs of modern day audio enthusiast that want a micro size stereo system but with the least compromises on sound and build quality. The latest development comes with improved connectivity options such as two digital optical inputs to hook up a TV, set-top box or other digital gear that deserves improved audio quality. Of course it plays all sources like CD, FM radio or USB media including iDevices in impeccable quality too.

"Simple & Straight" Circuit Design

For Sound Purity and Free of Coloration

Denon’s popular M series gives you high sound quality based on the “simple & straight” concept. Circuitry is uncomplicated, signal paths are short, and all adverse influences on sound quality have been minimized. The circuit design and the way the chassis is built ensure that the sound you hear is utterly faithful to the original performance.

Direct Play For iPod and iPhone via USB

You can also listen to music files from your iPod by simply connecting it to the USB port with the USB cable that came with the iPod. Digital signals from the iPod are transmitted as is to the D-M40 and are processed by advanced audio circuitry to produce a clean, high-quality sound. Moreover, the D-M40’s USB port is not only capable of playing MP3 and WMA files, but also lossless FLAC, WAV and AAC.

Triple Noise Reduction Design

In an audio component where various circuits, boards, and wire layouts can influence each other, it is not possible to obtain satisfying specifications or sound simply by strengthening the power amp circuit. Denon has therefore eliminated three sources of noise to ensure that the sound is as clean as possible. Distortion from the input selector, electronic volume and power amp has been suppressed to improve the signal-to-noise ratio and produce an even smoother, dramatic sound.

Enjoy Premium Sound

The D-M40’s compact size allows for easy setup on a bookshelf, in a bedroom or in the home office. With several color combinations, it easily blends into one’s daily life, delivering impeccable performance at the same time.

Denon SC-M40 speaker

These speakers have been designed with Denon Hi-Fi craftsmanship and European Sound engineering. For best performance a high quality 12 cm woofer / midrange chassis has been combined with a high definition tweeter and a crossover network with selected components to reproduces the smoothness of natural sound.

Tweeter Unit Exploded View

Woofer Unit Exploded View

Specs - D-M40


High Quality Power Output 2 x 30 W

CD Compatibility: CD / CD-R/RW / WMA / MP3 o / o / o / o

USB Audio (Front) / Made for iPod / Made for iPhone o / o / o

Tone Control: Bass / Treble / Balance o / o / o

Clock o

Sleep Timer o

Programmable Timer: Once / Daily o / o


Analog In/out 1 / 0

Digital Optical In/Out 2 / _

iPod / iPhone compatible USB input o

Subwoofer PreOut o

Speaker Terminal: Click Fit / Screw _ / o

Headphone Out o


Power Output (6 ohm, 1kHz) 30 W

Number of channels 2

Freq. Response (Analog In) 20 Hz-20 kHz

Frequency Range FM 87.5 Mhz-107.9 MHz

Frequency Range AM 520 kHz-1710 kHz


Available color: Black o

Remote Control RC-1162

Power Consumption in W 70

Standby Consumption in W 0.3

Maximum Dimensions (W x D x H) in inches 8.27 x 12.13 x 4.53

Weight in LBS 8.82

Speakers: SC-M40

Type 2-way bass reflex

Drivers 4-3/4" bass-mid
1"dome high

Impedance (ohms) 6

Frequency range 45Hz-40kHz

Available colors: Black o

Maximum Dimensions (W x D x H) in inches 5.71 x 9.21 x 9.37

Weight in lbs 7.94

Downloads - D-M40

pdf file
Online Manual
pdf file
D-M40 Owner's Manual - English

1.66 MB

pdf file
D-M40 Owner's Manual - Spanish

1.72 MB

pdf file
D-M40 Quick Start Guide - English

0.72 MB

pdf file
D-M40 Quick Start Guide - Spanish

0.74 MB

pdf file
SC-M40 Speakers Quick Start Guide

1.02 MB

pdf file
D-M40 Specification Sheet

1.92 MB

Reviews And Awards - D-M40

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Q&A - D-M40

NFC Bluetooth?

Asked by: Mgj112
Hello Mgj112, The DM-40 does not have Bluetooth. Sorry for the bad news. Let us know if you have any more questions.
Answered by: Ken C
Date published: 2017-11-21

Will the Denon D-40S 6ohm amplifier power my 8ohm Boston Acustics CR-6 bookshelf speakers (which I am really fond of) without a problem or loss of sound

Asked by: Tommyj396
Hello Tommyj396, Yes you will be able to use your Boston Acoustics CR-6 speakers. On page 17 of the manual it says you can use speaker 6-16 ohm. Let us know if you need more assistance!
Answered by: Ken C
Date published: 2017-09-21

Hello, Can I serve as the DM40 to listen to the sound coming from my television set? Thank you and good day!

Asked by: VStarGB
Hello. This can be done by connecting an optical or analog audio connection from your TV to the DM-40. Then selecting that input as your playback source.
Answered by: Mike D
Date published: 2017-07-11

Can I play media from my android phone through the USB port? How about internet radio through android?

Asked by: Misha
Hi Misha. I'm sorry but it is not possible to play media from an Android phone through USB. It will only charge the phone. The USB port only supports media from USB memory devices formatted in FAT16 or FAT32, and also iPod models listed in the manual. Please see the link below for reference. Thanks! http://manuals.denon.com/RCDM40/NA/EN/OKNRSYzvgbfezq.php
Answered by: Mike D
Date published: 2017-06-07

Are the speakers wireless?

Asked by: Ken Lord
No. The speakers connect to speaker output terminals on the back, using speaker wire. If you're interested in a wireless system, you may want to check out our HEOS product line at the link below. https://usa.denon.com/us/heos
Answered by: Mike D
Date published: 2017-06-05

I notice that this device supports up to iPhone 6. Will there be a firmware update for iPhone 7, plus, and further models such as iPhone 8? 

Asked by: Enjoy7
Hello. There are no updates planned at this time, but I have confirmed that the iPhone 7 does play through the D-M40.
Answered by: Mike D
Date published: 2017-03-31

I have an older vinyl record player that requires an amplifier and am wondering if this has any amplifying capabilities or not!? thx

Asked by: renwick
Hi Renwick. The D-M40 does not have a phono input. If your turntable does not have a preamp built in, you will need to add an external phono preamp in order to connect to the D-M40.
Answered by: Mike D
Date published: 2017-03-08

can it play more then one cd

Asked by: sue 2137
Hi Sue. The D-M40 is a single disc player. Only one disc can be loaded at a time.
Answered by: Mike D
Date published: 2017-02-14
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