Daniel Hertz M9 Amplifier
Daniel Hertz M9 Amplifier
Congratulations on your purchase of the Daniel Hertz M9 Integrated Amplifier and
welcome to the world of Daniel Hertz SA.
For operation anywhere in the world, the internal switching mode power supply (SMPS)
operates from 90VAC to 250VAC without user adjustment.
Operating Your M9
The Front Panel
The M9 is a minimalist integrated amplifier design dedicated to reproducing music with
the utmost accuracy and clarity. With the M9, audio legend Mark Levinson, founder of
Daniel Hertz, has again redefined excellence in audio amplification by utilizing new
technology to provide the most advanced performance and features – this time, at a
price point that puts the best within reach of more people.
21st Century Technology
Under the guidance of Mark Levinson, Class D audio amplification has matured and
become the successor to previous “state of the art” audio amplifier technology hailing
from the 1960’s. New Daniel Hertz technology, previously unseen in the world of audio,
delivers astonishing performance and sonic quality with a high level of integration –
allowing the affordable, lightweight, and compact M9 to outperform many large, heavy,
and expensive “high end” power amplifiers. While weighing only 5kg (10.8 lb), the M9
delivers 200 Watts Per Channel (WPC) into 8 Ohms, and 400 WPC into 4 Ohms. With
serious power, low output impedance, high output current, and pure natural sound, the
M9 is an ideal amplifier for virtually all quality music speakers, including large power
hungry models. Also noted, the M9 is a highly efficient design, utilizing most of the AC
power it consumes to create sonic output, instead of useless and annoying heat.
M9 Overview
The M9 is a complete audio amplifier solution with zero tolerance for sacrifice to
performance and built to last a lifetime. Features include: superb high resolution PWM
digital to analog conversion (DAC), six audio inputs, stereo power output, a headphone
jack, and 24-bit Bluetooth connectivity input in a single, compact, and lightweight
The heart of the M9 is a new type of integrated circuit (IC) based on a high performance
silicon platform and embedded audio software suite, personally designed by Mark
Levinson, that allows digital media to sing like analog.
The M9 has three analog and three digital inputs, including: digital coaxial, USB, and
Bluetooth wireless. Now, music played from a smartphone or tablet sounds virtually
identical to the studio recorder used to make the recording.
Each of the three RCA analog inputs features a 1 megOhms input impedance, providing
essentially unloaded operation for the selected source device. To eliminate analog input
switching, sonic degradation, crosstalk, and reliability issues, analog input is converted to
digital signal by way of dedicated (per input) high performance analog to digital
converters (ADC).
Figure 1
The front panel of the Daniel Hertz M9 Integrated Amplifier features a Standby/On
button, input source selection knob (Input), input source LED indicator (Input Status),
power and status LED indicator (Power Status), Volume control knob, and Headphone
The Standby/On button toggles the M9 between standby and operating modes. The M9’s
internal power supply is always on when the unit is connected to a power source. While
in standby mode, all internal circuitry is powered down to incur negligible current draw.
When the Standby/On button is pressed to engage operating mode from standby mode,
Volume returns to the last set level.
The Input source selection knob is a manual rotary control with six positions, one for
each of the three analog (A1, A2, A3) and three digital (D1, USB, W1) inputs. Each Input
source selection knob position correlates with an audio input source and Input Status
LED indicator color (see Figure 2).
Input Selection/Mode
Input Status LED Color
Standby Mode
No Color
Analog 1 (A1) Input
Analog 2 (A2) Input
Analog 3 (A3) Input
Digital Coax (D1) Input
USB Input
Bluetooth Wireless (W1) Input
Figure 2
The stereo analog line-level record output can be connected to auxiliary audio systems
and recording interfaces.
The Input source Status LED displays different colors to assist the user with understanding which audio source is engaged while the M9 is in operating mode.
Likewise, the Power Status LED indicator provides mode and signal information through
color associations (see Figure 3).
Power Status LED Color
No Power
No Color
Standby Mode
No Signal Detected
Signal Detected
Signal Clipping
Figure 3
Similar to the Input source selection knob, the Volume control knob is also a manual
rotary knob. However, the Volume control knob is a digital control with infinite rotation –
meaning, no stop at minimum or maximum gain. Listeners more familiar with analog
volume controls will be surprised with the infinite rotation of the knob, but pleased with
its functionality and many advantages including: fine resolution, wide dynamic range,
transparent sound quality, and high reliability.
The Headphone jack is a 1/4” female headphone connector. A dress plug is provided to
prevent the 1/4” jack from being visually obtrusive while headphones are not in use. The
dress plug is removed by using the thumb and first finger to pull the dress plug away
from the face of the amplifier. When headphones are connected to the M9 1/4” jack, the
speaker outputs are disabled. Headphones with a 3.5mm, or 1/8”, mini-plug require a
female mini-plug to 1/4” male adapter for use with the M9.
The Rear Panel
Daniel Hertz M9, there is virtually no audible difference between hardwired and wireless
inputs. The Bluetooth Wireless Receiver module should only be removed or installed by a
trained person. Removal or installation of the Bluetooth module by a person who is not
factory approved in writing from Daniel Hertz voids the M9 warranty.
The 24-bit USB (Type B) DAC Input allows the M9’s integrated processor to accept input
directly from any desktop or laptop computer via a male-to-male Type A to Type B USB
cable (included).
The Digital Coaxial Input (D1) is compatible with PCM 2.0 signal from any digital source
with up to 32-bit resolution and between 32kHz to 96kHz sample rate.
The RCA analog inputs (A1, A2, A3) are compatible with line level audio sources. The 1
megOhms input impedance causes minimal strain and optimal sound quality during the
transference of signal from the chosen audio source to the M9.
The Record Output is a fixed record output level (RCA) analog output and transmits the
selected M9 input source, analog or digital, to any 1V level compatible device.
The Speaker Output, Right terminals and Speaker Output, Left terminals are for connecting the M9 to speakers. Please note that the positive/red (+) and negative/black (-)
terminals on the speakers and M9 should be connected accordingly – i.e. black to black
and red to red. The M9 is stable down to 2 Ohms. Configuring the M9 with a load of less
than 2 Ohms voids the warranty.
Should the fuse need to be replaced, use a 15A 250V fast blow fuse.
The included IEC power cable, with a female IEC end, is required to connect the M9 to a
power source. The female IEC connector attaches to the rear panel AC Input of the M9.
The Daniel Hertz M10 and Master Class
The Daniel Hertz M10 Speaker is an ideal match for the M9 as it is conceived and built
with the same goal of delivering superior quality and compact size at an accessible price.
For those who seek the ultimate music listening experience and best sonic performance
from the M9, Daniel Hertz recommends using an Apple computer with Daniel Hertz
Master Class audio software as the audio source. The purpose of Master Class is to match
digital audio files with the chosen playback system, in real time, to create natural sound
that is akin with the best analog – eliminating the listening fatigue caused by PCM digital
audio. Ultimately, Daniel Hertz Master Class enables recordings in all digital audio
formats (playable in QuickTime), from all eras and genres, to come to life never before
while sounding better than costly high resolution audiophile recordings.
Figure 4
The 24-bit Bluetooth wireless connectivity input (W1) is provided via an external plug-in
Wireless Receiver module on the rear panel. The Bluetooth Wireless Receiver antenna is
contained within the module’s plastic enclosure (antennas don’t work from within metal
enclosures). The module feeds a digital signal to the main M9 amplifier board. With the
Daniel Hertz is the only company that provides a true global solution to advancing music
reproduction, including the sound of the recordings you listen to.
For more information on Daniel Hertz SA, the M9, and other Daniel Hertz products, visit:
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF