Musical Fidelity V90-AMP Bruksanvisning
                    Musical Fidelity
                    
                    mottagare
                    
                    V90-AMP
                
                                
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V90-AMP Digital Power Amplifier with 24 bit/48kHz 
Asynchronous USB DAC  
Instructions 
Introduction 
Thank you for purchasing the V90-AMP power amplifier. 
  It is designed to add power and drive, for example, to 
multimedia listening with computers, tablets and other 
similar arrangements.  
We sincerely hope that it will bring you many years of 
outstanding listening pleasure. 
Installation Precautions 
Your new  V90-AMP is designed and built to provide 
trouble-free performance, but as with all electronic devices, 
it is necessary to observe a few precautions: 
 Do not use the V90-AMP near water. The unit must not be 
exposed to dripping or splashing liquids. 
 Keep the V90-AMP away from heat such as radiators. No 
naked flame sources should be placed on the unit. 
Product Note: 
This Hi-fi product has been tested to ensure that its 
operation is not adversely affected by normal background 
levels of Radio Frequency Interference (R.F.I.), and that it 
does not itself generate excessive amounts of interference. 
However, if a problem persists, please contact your Musical 
Fidelity agent. 
The V90-AMP will operate in accordance with its 
specifications within the following environmental range: 
Temperature 5 to 45 degrees Celsius 
Humidity 10 to 90% non condensing 
WARNING: NEVER open the case of the V90-AMP. There 
are POTENTIALLY LETHAL HIGH VOLTAGES 
CONTAINED within this unit even on standby or switched 
off. There are no user adjustments inside. Please refer all 
service work to an authorised Musical Fidelity agent. 
Unauthorized     access   also   invalidates  all    guarantees.    
Connections 
 All connections must be made before the unit is plugged in. 
Always switch off the equipment attached to the V90-AMP 
before connecting or disconnecting power, changing leads 
or inputs.  
Inputs 
Choose which inputs the unit will be using. It will switch 
automatically dependant on which input is currently 
“playing”. 
 USB - Using a good quality USB (1.1 or 2.0) “A” to “B” lead 
(not supplied), connect the USB input to a spare USB port 
on computer/host device. This unit is automatically detected 
in all Microsoft, Apple and Linux based computers and 
similar which support “USB audio class 1.0 or  later”. 
Digital – Use a normal TOSLINK cable (not supplied) with 
TOSLINK to 3.5mm adaptor (supplied) for best quality 
connection from other digital audio devices. 
Analogue – Use standard 3.5mm Jack cable (or RCA cables 
in conjunction with supplied adaptor) to connect analogue 
signals from other sources. 
Outputs 
 Two pairs of sprung speaker terminals are provided for 
connection to a pair of speakers. Use normal stranded 
speaker cable and make absolutely sure there are no stray 
strands that could short circuit and cause the amp to shut 
down prematurely. 
DC output 
A DC output socket is provided for future MF product only. 
Power 
 Plug the mains connector lead from the unit into a 
convenient wall mains outlet. The blue LED will light to 
confirm the unit is now on and ready for use. To turn unit off 
or on again, press the volume knob. 
                                   Power LED                                                                                                   Status LED 
Power on/standby switch (press) and volume control (turn) 
Async. USB input     3.5mm Analogue/Digital optical input                          DC output                  
Operation 
Volume function 
The unit can be used as a volume controlled amplifier or a 
straight power amplifier. 
 To enable the front panel volume control, slide the volume 
control switch (back panel) to the on position. The knob on 
the front panel now controls volume to speakers. 
 To disable the front panel volume control, slide the volume 
control switch (back panel) to the off position. The knob on 
the front panel is now defeated and volume control will need 
to be applied from within the source, for example by a 
computer’s multimedia mixer settings. 
Input select 
This unit will switch inputs automatically dependant on 
signal presence or absence.  
When playing (i.e. signal is present) through the USB input 
takes precedence over anything plugged into the 3.5mm 
Jack plug. So the unit will automatically select the USB 
input. 
 To switch to the OPTICAL/ANALOGUE input STOP the 
USB music player on the computer and/or remove the USB 
input lead.  
The unit will then switch to OPTICAL/ANALOGUE input 
accordingly. 
Selecting between analogue and optical input is simply a 
matter of plugging the required lead into the 
OPTICAL/ANALOGUE input and the V90-AMP is internally 
configured automatically. 
Status LED summary 
RED – (temporary) mains switched off or lead disconnected. 
(permanent) Internal failure – switch off and check  
wiring for short circuits before switching on again. 
GREEN (analogue input) analogue connection made but 
not necessarily playing. 
GREEN (digital/USB inputs) digital audio signal present and 
playing 
AMBER (analogue) displayed briefly when plugging in 
analogue cable as unit switches to analogue 
input. 
AMBER  (digital/USB inputs) digital connection made but no 
signal being played. 
Off – No sources connected or unit is switched off. 
Use 
 Switch unit on and adjust the volume control for a 
comfortable listening level, sit back and enjoy the music.  
                        Volume control off/on           Right and left speaker output terminals                           Mains power input socket      
Units 24-26 Fulton Road 
Wembley HA9 0TF 
England 
(+) 44 208 8900 2866 
http://www.musicalfidelity.com/ 
For warranty, please register product on 
http://www.musicalfidelity.com/register
Produktspecifikationer
| Varumärke: | Musical Fidelity | 
| Kategori: | mottagare | 
| Modell: | V90-AMP | 
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