M2TECH MARLEY MKII User Manual
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M2TECH MARLEY MKII User Manual

High performance headphones amplifier
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M2TECH
MARLEY MKII
HIGH PERFORMANCE HEADPHONES AMPLIFIER
USER MANUAL
REV. P
A – 6/2019
r

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Summary of Contents for M2TECH MARLEY MKII

  • Page 1 M2TECH MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER USER MANUAL REV. P A – 6/2019...
  • Page 2 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz Copyright © 2019, M2Tech Srl...
  • Page 3 For a proper operation of this unit, all connections to other equipment in the system must be done when all equipment are off. Failing to comply with this advice may lead to damage to the Marley MkII. The label above, printed on the product case, indicates that the product, when no more usable, can’t be...
  • Page 4 Moreover, MARLEY MKII shares many features with preamplifiers, therefore it is recommended to directly drive power amplifiers. MARLEY MKII is provided with a complete set of inputs and outputs, to allow for using every ® kind of source and driving any amplifier and headphones. The Bluetooth receiver makes controlling the MARLEY MKII from your smartphone or tablet straightforward.

  • Page 5: Table Of Contents

    7.4.13. REMOTE POWER: setting the MARLEY MKII to accept/ignore the IR remote ON/OFF command .....................28 7.4.14. POWER MODE: setting the MARLEY MKII behaviour when power is applied ..29 7.4.15. TRIGGER OUT MODE: setting the behaviour of the MARLEY MKII trigger output ............................30...
  • Page 6 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz Copyright © 2019, M2Tech Srl...

  • Page 7: Unpacking And Placing The Unit

    Should one or more item be missing, please contact your retail dealer. Remove the MARLEY MKII from the box and place it onto a stable base, far from heat sources. Avoid full sunlight on the unit. Allow for ample room around the unit for venting.
  • Page 8 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz Copyright © 2019, M2Tech Srl...

  • Page 9: Front Panel

    7) Power on/power off/mute/menu exit button. Press this button to switch the MARLEY MKII on when it’s off. When the MARLEY MKII is on, a short press will toggle mute, unless the menu is active: in this case a short press will cause the menu to exit discarding any configuration change.
  • Page 10 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz Copyright © 2019, M2Tech Srl...

  • Page 11: Back Panel

    3. Back Panel Figure 2 8) Preamplifier Output. Connect the MARLEY MKII to your amplifier/preamplifier using RCA- terminated interconnects. This output doubles the single-ended headphones output from the front panel. Female gold-plated RCA sockets. 9) Tape deck record output. Connect this output to your tape deck record input using RCA-terminated interconnects.
  • Page 12 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz 17) Trigger input. Connect to the trigger output of any other device providing 5V . Female 3.5mm jack. Copyright © 2019, M2Tech Srl...

  • Page 13: Remote Control

    M2Tech Rockstars series products. Please note when a command is sent to the MARLEY MKII the “AMP” key blinks in green. If any of the other key “DAC”, “PHONO”...
  • Page 14 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz Copyright © 2019, M2Tech Srl...

  • Page 15: Connecting And Powering The Unit

    If you want to use the MARLEY MKII as a preamplifier, connect the preamp outputs (Figure 2, 8) to the inputs of a power amplifier; otherwise connect the tape outputs (Figure 2, 9) to a pair of inputs on an integrated amplifier or preamplifier.
  • Page 16 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz Copyright © 2019, M2Tech Srl...

  • Page 17: Cleaning The Unit

    6. Cleaning the Unit The MARLEY MKII should be cleaned with a soft, slightly damp cloth. Do not use alcohol or any other types of cleaning fluids as they could damage the unit. Avoid fluids from dropping or leaking inside the unit. Fluids of any type poured into the unit will void your warranty.
  • Page 18 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz Copyright © 2019, M2Tech Srl...

  • Page 19: Using The Marley Mkii

    7. Using the Marley MkII At activation, the MARLEY MKII spends a little time to ensure that all supplies reach their nominal levels, during which the model name is displayed. After the activation delay is expired, some general operational information is shown on the MARLEY MKII display: the selected source, the output impedance, the volume level, cross- feed if enabled and the tone control settings.

  • Page 20: Source Selection

    It is always wiser to limit volume when in mute mode and even when turning on and off the MARLEY MKII. 7.3. Source Selection The Marley MkII is provided with various inputs, therefore it is possible to connect different sources and select which one to listen to.

  • Page 21: Display Backlight: Setting The Display Backlight

    “DIM” key is used. 7.4.2. BALANCE: balance setting The Marley MkII allows for setting the balance (that is, the relative level between left and right channel) within a +/-6dB range in 0.5dB steps. To set balance it is necessary to access the first menu item.

  • Page 22: Volume Steps: Choosing Volume Steps

    7.4.3. VOLUME STEPS: choosing volume steps The MARLEY MKII output level can be set with two different granularity intervals: 1dB or 0.5dB. Choosing 0.5dB will allow for a broader but faster level setting, while 0.5dB will allow for finer but slower setting, as the available steps double.

  • Page 23: Volume Mode: Choosing Volume Mode

    A – JUNE 2019 www.m2tech.biz 7.4.4. VOLUME MODE: choosing volume mode The MARLEY MKII listening level can be displayed in two fashions: either in deciBels or in steps. In decibel mode, the maximum level is 0dB, while negative values with increasing magnitude indicate decreasing listening levels.

  • Page 24: Power On Volume: Choosing The Volume Setting At Power-On

    7.4.5. POWER ON VOLUME: choosing the volume setting at power-on The user can choose which volume the MARLEY MKII will set at power-on: volume can be set to minimum (MUTED) or to the last level set before previous power-off.

  • Page 25: Tone Control: Enabling/Disabling The Tone Control

    7.4.7. TONE CONTROL: enabling/disabling the tone control The Marley MkII is provided with a 3-band tone control circuit to allow users to tailor the amplifier’s frequency response to the headphones’ one or to their own tastes. The tone control can be disabled when not needed.

  • Page 26: Crossfeed: Enabling/Disabling Cross-Feed

    7.4.9. CROSSFEED: enabling/disabling cross-feed The Marley MkII is provided with a cross-feed circuit which partially blend the two channels, therefore reducing the channel separation. This can be useful when listening to tracks recorded in the early stereo era, when audio engineers were not really acquainted with stereo technology.

  • Page 27: Auto Off: Setting The Automatic Switch-Off

    7.4.11. AUTO OFF: setting the automatic switch-off To comply with UE requirements regarding energy saving, the MARLEY MKII is able to automatically switch off after a certain idle time. Idle means a time lapse in which user didn’t access any control, like volume or mute.

  • Page 28: Standby Led: Setting The Front Panel Led Behaviour

    7.4.12. STANDBY LED: setting the front panel LED behaviour The front panel LED of the MARLEY MKII (Fig. 1, 6) can be set to operate in three different modes, according to user’s convenience:  ON: the LED will be continuously blowing when the MARLEY MKII is in standby ...

  • Page 29: Power Mode: Setting The Marley Mkii Behaviour When Power Is Applied

    When the MARLEY MKII is used standalone with its stock wall adaptor, the latter is the preferred choice. On the other hand, when the MARLEY MKII is used with the VAN DER GRAAF II or any other power supply which is slave to a global activation control or trigger, having the MARLEY MKII immediately on after applying power is the best choice.

  • Page 30: Trigger Out Mode: Setting The Behaviour Of The Marley Mkii Trigger Output

    7.4.15. TRIGGER OUT MODE: setting the behaviour of the MARLEY MKII trigger output The MARLEY MKII is provided with a trigger output which can be used to turn on and off another device. Depending on whether the device is a source or a power amplifier, it may be desirable to activate it before (“SOURCE”) or after (“NORMAL”) the Marley MkII outputs...

  • Page 31: Bluetooth

    ® It may be useful to know certain information about the MARLEY MKII Bluetooth interface. ® interface can be used to recognize the MARLEY MKII in the list of accessible The Bluetooth ® Bluetooth devices in your smartphone.

  • Page 32: Firmware Revision: Accessing Firmware Revision Information

    7.4.18. FIRMWARE REVISION: accessing firmware revision information The MARLEY MKII is a complex device in which different microcontrollers interact for correct operation. M2Tech might launch a call for general update of the internal controllers. Therefore it’s necessary to access to MARLEY MKII current firmware release information to decide whether an update is required or not.

  • Page 33: Power Mode And Standby

    It is also possible to put the MARLEY MKII in standby by the related key on the remote control. In this case, the MARLEY MKII, while stopping operation as when it is switched off by the front panel, will keep a minimum current consumption because the main controller, the ®...
  • Page 34 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz Copyright © 2019, M2Tech Srl...

  • Page 35: Controlling The Marley Mkii By The Bluetooth Interface

    8. Controlling the Marley MkII by the Bluetooth Interface User can control the MARLEY MKII, as well as set all operative parameters, by any Android and iOS smartphone and tablet thanks to the app developed by M2Tech which will be available soon for free on Google Play and Apple Store.
  • Page 36 M2Tech MARLEY MKII HIGH PERFORMANCE HEADPHONES AMPLIFIER REVISION P A – JUNE 2019 www.m2tech.biz Copyright © 2019, M2Tech Srl...

  • Page 37: Specifications

    Cross-feed channel separation: ..20dB @ 1kHz Automatic switch-off......10 to 240 minutes in 10 minutes steps, plus disabled Supply:..........15V 1000mA Power consumption: ......15VA Size:..........200x50x200mm (w x h x d) Weight..........2kg (device and ancillaries) 2.5kg (packed) Copyright © 2019, M2Tech Srl...

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