ML-118 Mastering Mid-Side Unit

€ 4,800

The Monster ML-118 is an advanced Mid/Side analog processor designed by REAL Audio to comply with the demands of professional recording and mastering engineers. Mid/Side processing is based on the coding of a stereo signal into two components. The ‘Mid’ channel contains the information that appears in both the left and right channels, and the ‘Side’ channel contains all the information that differs between the left and right channels.

Once encoded into M/S, these two signals can be processed independently, before being decoded back into L and R channels. The M/S technique gives more control over the width of the stereo image than techniques based microphone placement techniques. The Monster MS is a code/decode mono/stereo system to be used primarily for mastering sessions but will perform outstandingly as a stereo effects unit and as a mastering console.

On top of its amazing sound quality, the Monster MS unit features a unique set of functions never seen before in similar units. The L+R and L-R channels are equalized in amplitude by suitable gains at +4 dBu in order to obtain the maximum Signal/Noise and Signal/headroom ratio in the audio path. This fact is important when compressors/limiters are used as inserts in the MID-SIZE audio path.

Each L+R ed L-R processing section contains a HI-PASS and a LO-PASS filter that can be selected by pressing the HI-PASS/LO-PASS button. The filters are characterized by two working bands selected by pressing the corresponding buttons (Fx10 and Fx4), the cut off frequency is adjustable by a potentiometer.

HI-PASS filter parameters: Range 20-250 Hz or 200-2500 Hz (F x 10 button pressed). LO-PASS filter parameters: Range 1-5 KHz or 4-20 KHz (F x 4 pressed).

Three different INSERT points are available to connect outboards. INSERT 1 and 2 are available on the DB-25 connector on the back panel. This connection is useful for effects that are often used in the audio path. INSERT 3 connectors are located on the front panel (XLR connectors). This is useful for on the fly outboard connections. The unit provides a Phase Inversion button to reverse the phase of the wet signal. The wet and dry signals can be mixed together.

A bypass switch (illuminated by a LED ) can turn the device into a Stereo unit, making the Monster MS an effects unit perfectly integrated in an external signal processing chain. The Monster MS features 2 multifunction VU meters that the user can set to display a variety of important data such as: input stereo level, post L+R/L-R levels, post L+R/L-R processing level, L+R/L-R output level and output stereo level.

Power Supply Linear Regulator (Balanced C-Core Transformer)
Operating Voltage 220V 50 Hz/ 110 V 60 Hz switchable
Power Consumption 30 W
Input Electronically balanced, Impedance > 10 KΩ
Channel Gain L+R: from -10 to +6 dB, L-R: from -22 to +4 dB.
Master Output Electronically balanced,
Output Impedance 50 Ω. (minimum external load 600Ω).
Master Level Level +4dBu, Max +28dBu.
Bandwidth 5 - 200.000 Hz -1dB, perfect square wave up to 20 KHz
Distortion + Noise <0.005% ( typical 0.001 %).
L+R, L-R Filters HI-Pass with 2 frequency ranges (0-300Hz and 200-3000Hz),
LO-pass with 2 frequency ranges (1-5kHz and 4-20kHz).
Front Panel Input Section Controls Left/Right level POTs +14/-10dBu,
Calibration button and Calibration trimmer for non standard input levels.
Front Panel Channels Controls Level pot (L+R:-10/+6dB, L-R:-22/+4dB),
HI-Pass cut-off frequency pot (0-300Hz and 200-3000Hz),
LO-Pass cut-off frequency pot (1-5kHz and 4-20kHz),
HPF-LPF on/off buttons,
HPF: freq x 10 button,
LPF: Freq x4 button,
3 x bypass buttons (Ins 1, Ins 2, Ins 3 ),
Phase Reverse button,
DRY/WET level pot,
Output level pot +4dBu (max +28dBu).
Front Panel Master Monitor Section Controls 2 x Level Pots (-6db to +6dB) with center detect (Left,Right),
Monitor button,
3-way MUTE toggle switch (L+R/Left Off, Off, L-R/Right Off),
5-step rotary switch for L+R/L-R mode: (Dry, Wet, Out,) and Stereo mode (In, Out),
Backlight stereo mode button,
Illuminated Power On/Off switch.
Front Panel Indicators 1x red LED (calibration),
Input section per channel: 4 x green LEDs (HPF On, Freq x10 On, LPF On, Freq x4 On), 3 x red LEDs (Ins 1, Ins 2, Ins 3 bypass), 1 x red LED (Phase)
Master/Monitor section: 1 x red LED (Monitor), 2 x Electromechanical VU meters (LED Backligh).
Front Panel Connectors 2 x Balanced XLR female for Insert 3 (Send L-R),
2 x Balanced XLR male for Insert 3 (Return L-R).
Rear Panel Input Connectors 2 x Balanced XLR female.
Rear Panel Output Connectors 2 x Balanced XLR male.
Rear Panel Insert Connectors 1 x DB25 female for Insert 1 and-2 (Send & Return 1, Send & Return 2 )).
Rear Panel Master Connectors DB25 female (Main L/R, Monitor L/R, Send L/R, Return L/R).
Rear Panel AC mains IEC C13 16 A connector, AC mains cord with IEC Schuko 16A.
Rear Panel Main Switch Power On/Off switch.
Construction 19" rack mount metal box
Dimensions W 483 mm / 19”, H 133.5 mm/5.25” (3 RU), D 225 mm / 8.86”.
Weight 6 kg.

    ML-118 Key-Technologies


    Large Bandwidth (LB) means a very fast transient response able to represent the original sound with the maximum temporal resolution. LB is required to improve the perception of a “real sound” and to represent the details of the original sound.

    Large bandwidth plus very low total harmonic distortion means a perfect square wave reproduction.

    Ultra Low Noise (ULN) active and passive components and ULN design techniques. This requirement is especially important when the audio bandwidth is large as in the case of ARREL Audio products.

    Very High Dynamic Range (VHDR) means that the saturation probability of the output stages is extremely low. This is obtained by using special rail to rail circuits and by increasing the power supply voltage of the analog circuits.

    Electromechanical tolerance means that electromechanical components are doubled in every situation in which maximum reliability it is important due to a frequent use (switches, push buttons, potentiometers).

    Through Hole technology means the maximum reliability in terms of thermal and mechanical stresses especially for connectors and electromechanical components.