The mixer has 4 high quality, digitally controlled, THAT Corporation, microphone pre-amps. There are 5 stereo output busses: 1 master, 1 monitor, 2 digital and 1 headphone output. The output busses can be individually assigned to any input pair or the master mix bus. The unit is able to do mid/side M-S matrix on each input pair. An extremely wide viewable and clear OLED display is used for metering, menus and information. The MM-4240 has an internal sampling rate of 96 kHz and a full 24-bit input to output resolution. The recorder can be setup for other sampling rates and resolutions. The unit has dedicated potentiometers and switches for the most commonly used functions such as pre-gain, pan, faders, record, test tone, monitoring, etc. The master faders are combined with ultra- low THD opto-limiters. Each pre-gain amplifier has a clipping LED allowing the user to set optimal pre-gain for each scenario. Linear time code decoding can be used to synchronize the unit to external equipment. A virtual time-code slate can be displayed for easy filming with a non-t/c camera. External time-code can be used to start/stop a recording. A wired remote control input is also available. MM-4240 can be powered from six standard LR14 (size C) batteries and, or an external 6-15V power supply. The DC input socket and plug are locking type NEUTRIK nanoCON. A supercap is used instead of a traditional backup battery for real time clock and LTC, meaning no internal battery needs to be replaced. All recordings are stored on a removable SD card in BWF format. Firmware update is possible from files on a SD card.
MM-4240 4-INPUTS STEREO MIXER + 6-CH RECORDER The MM-4240 is a high-end professional audio mixer + recorder for portable use, made by MARENIUS. It offers four mic/line input channels, built-in SD-card recorder, OLED colour display, ultra-low-noise amplifiers and power supply based on standard C size batteries for up to 8 hours use. A full set of 6 channels, 4 in + L/R, can be recorded at 96 kHz / 24 bits. All this is housed in a compact, all-metal heavy-duty case with low weight (900 grams).
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MARENIUS ELEKTRONIKUTVECKLING AB  |  BOX 5086  |  SE-42605 VF, SWEDEN  |  TEL +46-31-691610  |  info@marenius.se  |  www.marenius.com  www.marenius.se  www.audiodesign.pro
Technical Data  MM-4240 Power supply External supply voltage 6-15 VDC Power consumption (Idle) 3.7W Power consumption (Max) 10W Power consumption (Typ) 5-8W Internal battery voltage 5-10VDC Mains power adapter included, 90-240 VAC Balanced analog inputs Connector XLR-3F, ¼” TRS Input impedance (XLR) 2kΩ Input impedance (TRS) 20kΩ Maximum input level (XLR) +12dBu Maximum input level (TRS) +32dBu Frequency response 20Hz-20kHz ±1.5dB Equivalent input noise -130dB (20Hz-20kHz) THD+N (20Hz-20kHz) 0.012% High-pass filter cut off frequency 200Hz Maximum gain 78dB Limiters Attack time 2ms Release time 200ms THD @ limiting (1kHz) 0.3% Input threshold +8dBu Balanced analog outputs Connector XLR-3M Output impedance 1kΩ Maximum output level +18dBu Input to output delay 0.45mS Output reference level -10dBv, 0dBu, +4dBu Maximum gain +6dB Recorder Sampling rates 48kHz, 96 kHz Resolution 16 bits, 24 bits A/D dynamic range 107dB File format WAV (BWF) Media types SDHC, SDXC File system FAT32 Digital outputs Connector mini-DIN 4p (2X BNC) Output level (into 75Ω) 1V p-p Output sampling rate 96 kHz Output resolution 24 bit Dimensions and weight Size (H x W x D) 5.6 x 14 x 13.8 cm Weight, excluding batteries 900 grams Carrying case, optional PortaBrace original Specifications are subject to change without notice. All figures are typical, unless otherwise indicated.
PortaBrace have designed the MM/case for the MM series of mixers from MARENIUS.
	4 ultra-low-noise mic/line inputs 	SD-card recorder 	24-bits @ 96/48 kHz format 	Standard batteries 	Heavy-duty metal case 	Compact size and low weight 	OLED colour display 	1 kHz test tone 	48V phantom power 	Time code sync input 	Virtual time code slate 	Time code start/stop trigger 	Remote control input 	Dual digital outputs 	Optical limiters with low THD 	Stereo return input 	Advanced signal routing options
MM-4220 offers dual power supply options: external DC and internal standard LR14 (size C) batteries. Battery replacement requires no tools.
Built with extruded, black-anodized aluminium profiles,   with laser-engraved text, MM-4240 can be expected to work well in various locations for a long time.
To put it simple: The sound and dynamics of this unit is really outstanding. Eric Spitzer-Marlyn in April, 2014
Listen to a short sample of a 4-tracks recording in 24/96 made with MM-4240 by Eric Spitzer-Marlyn!
Package includes • MM-4240 Mixer / Recorder • Mains AC/DC adapter • Mains cable • Interface cable for D1/D2 outputs • User’s Manual Accessories offered MM-NP1 battery adapter for NP-1 MM-4240/PSU external power bank MM/CASE1 PortaBrace case
MM-4240/PSU is the ideal companion for the MM-4240 mixer. It will double the battery capacity and it allows the user to switch batteries “on the fly”. Filled with re-chargeable batteries the unit also doubles as a high-capacity charger.
Using standard NP-1 batteries is possible with the MM-NP1 adapter. It includes a voltage regulator that handles batteries with voltage output  above 12 V DC.
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MM-4240 4-INPUTS STEREO MIXER + 6-CH RECORDER
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MARENIUS ELEKTRONIKUTVECKLING AB  |  BOX 5086  |  SE-42605 VF, SWEDEN  |  TEL +46-31-691610  |  info@marenius.se  |  www.marenius.com  www.marenius.se  www.audiodesign.pro
Technical Data  MM-4240 Power supply External supply voltage 6-15 VDC Power consumption (Idle) 3.7W Power consumption (Max) 10W Power consumption (Typ) 5-8W Internal battery voltage 5-10VDC Mains power adapter included, 90-240 VAC Balanced analog inputs Connector XLR-3F, ¼” TRS Input impedance (XLR) 2kΩ Input impedance (TRS) 20kΩ Maximum input level (XLR) +12dBu Maximum input level (TRS) +32dBu Frequency response 20Hz-20kHz ±1.5dB Equivalent input noise -130dB (20Hz-20kHz) THD+N (20Hz-20kHz) 0.012% High-pass filter cut off frequency 200Hz Maximum gain 78dB Limiters Attack time 2ms Release time 200ms THD @ limiting (1kHz) 0.3% Input threshold +8dBu Balanced analog outputs Connector XLR-3M Output impedance 1kΩ Maximum output level +18dBu Input to output delay 0.45mS Output reference level -10dBv, 0dBu, +4dBu Maximum gain +6dB Recorder Sampling rates 48kHz, 96 kHz Resolution 16 bits, 24 bits A/D dynamic range 107dB File format WAV (BWF) Media types SDHC, SDXC File system FAT32 Digital outputs Connector mini-DIN 4p (2X BNC) Output level (into 75Ω) 1V p-p Output sampling rate 96 kHz Output resolution 24 bit Dimensions and weight Size (H x W x D) 5.6 x 14 x 13.8 cm Weight, excluding batteries 900 grams Carrying case, optional PortaBrace original Specifications are subject to change without notice. All figures are typical, unless otherwise indicated.
PortaBrace have designed the MM/case for the MM series of mixers from MARENIUS.
	4 ultra-low-noise mic/line inputs 	SD-card recorder 	24-bits @ 96/48 kHz format 	Standard batteries 	Heavy-duty metal case 	Compact size and low weight 	OLED colour display 	1 kHz test tone 	48V phantom power 	Time code sync input 	Virtual time code slate 	Time code start/stop trigger 	Remote control input 	Dual digital outputs 	Optical limiters with low THD 	Stereo return input 	Advanced signal routing options
MM-4220 offers dual power supply options: external DC and internal standard LR14 (size C) batteries. Battery replacement requires no tools.
Built with extruded, black-anodized aluminium profiles,   with laser-engraved text, MM-4240 can be expected to work well in various locations for a long time.
To put it simple: The sound and dynamics of this unit is really outstanding. Eric Spitzer-Marlyn in April, 2014
Listen to a short sample of a 4-tracks recording in 24/96 made with MM-4240 by Eric Spitzer-Marlyn!
The MM-4240 is a high-end professional audio mixer + recorder for portable use, made by MARENIUS. It offers four mic/line input channels, built-in SD- card recorder, OLED colour display, ultra-low- noise amplifiers and power supply based on standard C size batteries for up to 8 hours use. A full set of 6 channels, 4 in + L/R, can be recorded at 96 kHz / 24 bits. All this is housed in a compact, all-metal heavy- duty case with low weight (900 grams). The mixer has 4 high quality, digitally controlled, THAT Corporation, microphone pre-amps. There are 5 stereo output busses: 1 master 1 monitor 2 digital 1 headphone output The output busses can be individually assigned to any input pair or the master mix bus. The unit is able to do mid/side M-S matrix on each input pair. An extremely wide viewable and clear OLED display is used for metering, menus and information. The MM-4240 has an internal sampling rate of 96 kHz and a full 24-bit input to output resolution. The recorder can be setup for other sampling rates and resolutions. The unit has dedicated potentiometers and switches for the most commonly used functions such as pre- gain, pan, faders, record, test tone, monitoring, etc. The master faders are combined with ultra-low THD opto-limiters. Each pre-gain amplifier has a clipping LED allowing the user to set optimal pre-gain for each scenario. Linear time code decoding can be used to synchronize the unit to external equipment. A virtual time-code slate can be displayed for easy filming with a non-t/c camera. External time-code can be used to start/stop a recording. A wired remote control input is also available. MM-4240 can be powered from six standard LR14 (size C) batteries and, or an external 6-15V power supply. The DC input socket and plug are locking type NEUTRIK nanoCON. A supercap is used instead of a traditional backup battery for real time clock and LTC, meaning no internal battery needs to be replaced. All recordings are stored on a removable SD card in BWF format. Firmware update is possible from files on a SD card.
MM-4240/PSU is the ideal companion for the MM-4240 mixer. It will double the battery capacity and it allows the user to switch batteries “on the fly”. Filled with re-chargeable batteries the unit also doubles as a high- capacity charger.
Using standard NP-1 batteries is possible with the MM-NP1 adapter. It includes a voltage regulator that handles batteries with voltage output  above 12 V DC.
Package includes • MM-4240 Mixer / Recorder • Mains AC/DC adapter • Mains cable • Interface cable for D1/D2 outputs • User’s Manual Accessories offered MM-NP1 battery adapter for NP-1 MM-4240/PSU external power bank MM/CASE1 PortaBrace case
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