Description
Marc One
The Monitor And Recording Controller with innovative features and a 32-bit AD/DA converter.
Number One in Sound
For us the sound is always in the foreground. When it sounds good, we like to listen. To get such a sound, you need experience and technical finesse. We have incorporated both into the Series One.
Speaker & Subwoofer
A production can be monitored via two switchable pairs of speakers. A subwoofer is also switched on and off with speaker pair A.
In the middle position of the switch, the speakers are switched off, which is convenient because there is no need to turn down the volume.
Monitor
The volume levels can be adjusted at lightning speed with the Monitor knob. In the middle, all input signals are equally loud. To the left, the analog stereo inputs get louder and the USB input signal gets quieter.
Turning from the center to the right does the opposite. This is very handy to quickly and intuitively set the right volume levels.
Line Inputs & USB
Two analog stereo sources and one digital source can be connected to the Marc One. The DAW (Digital Audio Workstation) is preferably connected via USB.
Other players like CD player, mixer, synthesizer or an analog tape machine / tape deck can be connected to the analog line inputs.
32-bit AD/DA Converter
The converter chip used is the superior AK4490, which belongs to the new generation of premium 32-bit DACs and is equipped with AKM’s Velvet Sound®. This technology makes the finest details audible thanks to its low-distortion architecture. Sampling frequencies up to 768kHz PCM (16x CD resolution) are supported and DSD (Direct Stream Digital) playback is supported up to DSD4 or DSD256 (11.2 MHz) resolution.
Thus the Marc One qualifies for the currently highest resolution audio playback.
The USB connection is Class Compliant. This means that all Mac computers and iOS devices like iPads and iPhones can use the full performance bandwidth of the AD/DA converter without driver installation. iOS devices require the camera adapter. For Windows, a driver is required.
Line Out
The selected input signal is directly routed to the line out. This allows the Marc One to be looped between devices without “losing” an output.
If, for example, several people listening via headphones, a headphone amplifier can simply be connected to the Line Out. The signal can also be recorded analog or send to a mixer for further processing.
Three Monitoring Modes
are offered by the Control One. In the middle is the default setting “Stereo”. The mono compatibility can be checked when the switch is set to “Mono”. The special feature is the channel swap function:
- L/R > R/L
reverses the stereo image. L/R becomes R/L. This is especially important and extremely time-saving while searching a sound library for samples in video dubbing that should match a scene with direction of movement.
If the direction is not correct, the sample has usually to be loaded into the DAW to switch channels.
With the L/R > R/L function this is no longer necessary. The direction of movement can simply be swapped while prelistening samples in the library.
The Headphone Power Amp
Poor sound over headphones?
Not enough juice?
Not here. Marc One delivers a rich headphone sound and it can get really loud.
The output stage of the headphone amplifier is designed as a push-pull amplifier in class AB mode.
The output stage transistors are thermally coupled and thus run particularly coherently, which contributes to a consistent and stable sound image.
The power supply has a buffer circuit with low source resistance, ensuring generous current reserves even when driving low-impedance headphones.
The Revolution
The revolution in the headphone amplifier is the Phonitor Matrix – mixes made on headphones sound as they were mixed on speakers.
The Phonitor Matrix in its largest expansion stage has three setting parameters: Crossfeed, Speaker Angle and Center Level.
In the Marc One, the center level is preset to -1 dB and the speaker angle to 30°. These are the most commonly used values.
The crossfeed function determines the crosstalk of the channels, the so-called interaural level difference. The intensity of the crossfeed is fully variable.
When the Crossfeed control is in the OFF-position the Phonitor Matrix is switched off – it is removed out off the audio signal path via relay (hysteresis circuit).
Best fit
If the active speakers or the power amplifier are very sensitive the playback may already be fairly loud when the Volume control is in the first third of its control range. By activating the -10 dB dip switch the output level is lowered to accommodate for a wider usable range of the Volume control.
With the Rec 1+2 dip switch both line inputs are mixed together and can be recorded via USB.
The Power Supply
Good sound always starts with the power supply. This is where you lay the foundation for the performance of the entire device.
Although we “only” supply a 12 V plug-in power supply unit, the secondary power supply inside generates a voltage level of +/-17 volts for the analog audio sections with which professional levels of up to +22.5 dB can be achieved!
An elaborate low-drop operating voltage regulation provides more “juice” and regulates cleanly even when the maximum operation voltage is reached.
Specifications
Analog inputs & outputs; 6.35 mm (1/4") TRS Jacks
- Input gain (max.) +22.5 dBu
- Line Input 1 (balanced): Input impedance 20 kΩ
- Line Input 1: Common mode rejection < 60 dB
- Line Input 2 (unbalanced): Input impedance 10 kΩ
- Output gain (max.): Speaker Outputs (600 Ω) +22 dBu
- Line Output (unbalanced): Output impedance 75 Ω
- Speaker Output 1 (balanced): Output impedance 150 Ω
- Sub Output (balanced): Output impedance 150 Ω
- Speaker Output 2 (unbalanced): Output impedance 75 Ω
- Frequency range (-3dB) 10 Hz - 200 kHz
- Dynamic range 121 dB
- Noise (A-weighted, 600 Ω load) -99 dBu
- Total harmonic distortion (0 dBu, 10 Hz – 22 kHz) 0.002 %
- Crosstalk (1 kHz) < 75 dB
- Fade-out attenuation -93 dB
USB, 32-Bit AD/DA
- USB (B), PCM sample rates 44.1/48/88.2/96/176.4/192/352.8/384/705.6/768 kHz kHz
- USB (B), DSD over PCM (DoP), sample rates 2.8 (DSD64), 5.6 (DSD128), 11.2 (DSD256) MHz MHz
- 0 dBFS calibrated to 15 dBu
- Noise (A-weighted, 44.1/48 kHz sample rate) -113 dBFS
- THD + N (-1 dBFS, 10 Hz – 22 kHz) 0.0012 %
- Dynamic range (44,1/48 kHz sample rate) 113 dBFS
Headphones Output; 6.35 mm (1/4") TRS Jack
- Wiring Tip = Left, Ring = Right, Sleeve = GND
- Source impedance 20 Ω
- Frequency range (-3 dB) 10 Hz - 200 kHz
- Noise (A-weighted, 600 Ω) -97 dBu
- THD + N (0 dBu, 10 Hz – 22 kHz, 600 Ω) 0.002 %
- THD + N (0 dBu, 10 Hz – 22 kHz, 32 Ω) 0.013 %
- Max output power (1 kHz, 600 Ω) 2 x 190 mW
- Max output power (1 kHz, 250 Ω) 2 x 330 mW
- Max output power (1 kHz, 47 Ω) 2 x 400 mW
- Fade-out attenuation (600 Ω) -99 dB
- Crosstalk (1 kHz, 600 Ω) -75 dB
- Dynamic range 117 dB
Internal Power Supply
- Operating voltage for analog audio +/- 17 V
- Operating voltage for headphone amplifier +/- 19 V
- Operating voltage for relays +12 V
- Operating voltage for digital audio +3.3 V, +5 V
External Power Supply
- AC/DC switching adaptor Mean Well GE18/12-SC
- DC plug (+) pin 2.1mm; (-) outside ring 5.5mm
- Input 100 - 240 V AC; 50 - 60 Hz; 0.7 A
- Output 12 V DC; 1.5 A
Dimensions & Weight
- W x H x D (width x height incl. feet x depth) 210 x 49,6 x 220 mm / 8,23 x 1,95 x 8,66 inch
- Unit weight 1,45 kg / 3,2 lb
- Shipping weight (incl. packaging) 2 kg / 4,4 lb
