M2TECH MARLEY User Manual

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User manual (33 pages)

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M2TECH

MARLEY

DUAL-DRIVE CLASS-A HEADPHONE AMPLIFIER / Preamp

USER MANUAL

REV. 1.0 – 11/2013

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Page 1 All manuals and user guides at all-guides.com M2TECH MARLEY DUAL-DRIVE CLASS-A HEADPHONE AMPLIFIER / Preamp USER MANUAL REV. 1.0 – 11/2013...
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. Copyright © 2013, M2Tech Srl...
Page 4 WARNING: the information contained in this manual are considered to be reliable and accurate. M2Tech reserves the right to change or modify the information any time, without prior advice. It’s up to the customer to ensure that the manual being consulted is the latest version.
Page 5 MARLEY is provided with a complete set of outputs which allow for using any kind of headphones, be they fit for single-ended drive or for balanced drive. The high maximum output level delivered by the MARLEY allows for effectively driving even the most difficult headphones.
Page 7: Table Of Contents
2. Front Panel ......................11 3. Back Panel......................13 4. Connecting and Powering the Unit ............... 15 5. Cleaning the Unit ....................17 6. Using the Marley....................18 6.1. Volume Setting....................19 6.2. Muting Toggle....................20 6.3. Source Selection .................... 20 6.4.
Page 9: Unpacking And Placing The Unit
Should one or more item be missing, please contact your dealer. Remove the MARLEY from the foam enclosure 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 11: Front Panel
1) On/off/mute/menu escape button. Push this button to turn the MARLEY on when it’s off. When the MARLEY is on, a short push will toggle muting, unless the menu has been previously accessed: in the latter, a short push will cause immediate menu escape and configuration changes discard.
Page 13: Back Panel
6) Preamplifier output. If used, connect a power amplifier to this output, to use the MARLEY as a preamplifier. Gold-flashed RCA sockets. Black indicates left channel, red indicates right channel. Copyright © 2013, M2Tech Srl...
Page 14 (item 7). 4-pin female XLR socket. 9) Input for high-current, low-noise power supply. Connect the plug from the dedicated high-current, low-noise power supply dedicated for the MARLEY. 4-pin, male XLR socket (optional purchase). 10) Input for power from wall wart. Connect the jack from the supplied 15V-2A wall wart included in the package.
Page 15: Connecting And Powering The Unit
4. Connecting and Powering the Unit WARNING: All connections between the MARLEY MARLEY and other equipment must be MARLEY MARLEY made when all units are off. Failing to do so may cause damage to the MARLEY MARLEY MARLEY MARLEY and/or other units.
Page 16 MARLEY MARLEY‘s MARLEY MARLEY back panel (Figure 2, 9). Be sure to make this connection with the MARLEY MARLEY MARLEY MARLEY disconnected from any power source and with the MARLEY...
Page 17: Cleaning The Unit
5. Cleaning the Unit The MARLEY should be cleaned with a soft, damp cloth. Do not use alcohol nor other types of cleaning fluids as they could damage the unit. Avoid fluids from dropping or leaking through the venting grid holes. Fluids of any type poured into the venting holes will void your warranty.
Page 18: Using The Marley
DUAL-DRIVE CLASS-A HEADPHONE AMPLIFIER / PREAMP REVISION 1.0 – NOVEMBER 2013 www.m2tech.biz 6. Using the Marley At power up, the MARLEY observes a start-up heating period lasting a few seconds, during which the flashing writing in Figure 3 is displayed. HEATING UP POWER AMPLIFIERS...
Page 19: Volume Setting
When the MARLEY is configured in balanced mode, the two stereo amplifiers which are used in this mode are bridged and make for a single balanced amplifier. This is why only one balanced output is present and why only one volume control can be set when using the balanced headphone connection (Figure 4).
Page 20: Muting Toggle
“idle” status. 6.2. Muting Toggle The MARLEY is provided with a feature (muting) which allow for lowering the volume 20dB without touching the encoder knob. This feature is useful when user needs to listen to another person for a moment, or while changing music programs in the source, etc.
Page 21: Balance Setting
MARLEY automatically reverts to its “idle” status without changing the source selection. 6.4. Balance Setting The MARLEY allows for setting the balance (that is, the relative level between left and right channels) in a range of +/-6dB. To do this, it is necessary to push the encoder twice in balanced mode or three times in dual single-ended mode: the input selection feature is then accessed as shown in Figure 8.
Page 22: Output Mode Selection
(Figure 1, 1) or avoid doing any other action on the unit, as after a few seconds, the MARLEY automatically reverts to its “idle” status without changing the balance setting. 6.5. Output Mode Selection...
Page 23: Volume Display Mode Selection
MARLEY automatically reverts to its “idle” status without changing the output mode. 6.6. Volume Display Mode Selection The MARLEY’s volume levels may be displayed in two different fashions: deciBels or in steps. In the former, the highest volume is represented by 0dB, while negative figures with increasing magnitude indicate increasingly lower volume.
Page 24: Auto Switch-Off Setting
6.7. Auto Switch-Off Setting Compliant to UE rules about energy saving, the MARLEY is able to automatically switch off after a certain time of idle operation. Idle means a time lapse in which the user doesn’t operate the unit’s controls.
Page 25 240MIN Figure 11 The idle time after which the MARLEY switches off is set by rotating the encoder knob. To confirm the desired auto switch-off time, push the encoder: Time to switch-off is then stored and the unit will revert to “idle” status.
Page 26: Display Dimming
Figure 12 6.8. Display Dimming The MARLEY display backlight intensity may be set in four different levels, depending on user’s preference. Moreover, it’s possible to set an “automatic” mode in which the display is always of except, for a few seconds, when the unit is operated by the user.
Page 27: Firmware Revision
(which can only be done in the factory). To exit this feature and revert the MARLEY into “idle” mode, the button on the left of the front panel may be pushed (Figure 1, 1) or the user should avoid doing any other action on the unit: After a few seconds, the MARLEY then automatically reverts to its “idle”...
Page 28: Switch-Off
REVISION 1.0 – NOVEMBER 2013 www.m2tech.biz 6.10. Switch-Off The MARLEY may be turned off by a long push on the button on the left of the front panel (Figure 1, 1). After a few seconds, the advice shown in Figure 15 appears. POWERING-DOWN...
Page 29: Balanced Drive And Single-Ended Drive
(that is, an amplifier provided with two output stages operating in push-pull). In this setup, called “balanced” the two speakers Copyright © 2013, M2Tech Srl...
Page 30 Despite the common belief, no specific driver technology takes a specific advantage from balanced drive: any pair of speakers, be they dynamic, electrostatic, electret or isodynamic, will give better performance when balance-driven. Copyright © 2013, M2Tech Srl...
Page 31: Technical Specifications
Power supply: ........15V Power consumption: ......30VA Size:..........200x50x200mm (w x h x d) Weight..........2kg (unit only) 3kg (with packaging) For technical support please contact your retail dealer or e-mail to: support@m2tech.biz Copyright © 2013, M2Tech Srl...

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