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Musical Fidelity A1 manual

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Table of contents for the manual

  • Page 1

    A1 Integrated A1 SERIES CLASS A INTEGRATED AMPLIFIER WITH US B INPUT INSTRUCTIONS FOR USE Thank you for purchasing the Musical Fidelity A1 Integrated amplifier. This new incarnation of the A1 Integrated uses a cla ss A biased output stage to de liver the absolute best in audio quality with no listener fatigue from crossover di stortion artefacts. T[...]

  • Page 2

    A1 Integrated CONTENTS Issue 2: 05 th March 2008 Page 2 of 13 PAGE Section 3 Safety informa tion - - Mains plug (U.K. only ) Modificatio n warning 4 General advice - - Installation precautions User inform ation 5 Disposal infor mation EU disposal info rmation 6 Installation - - - - Introduction Cleaning Installation Audio connection 7 Facilities an[...]

  • Page 3

    A1 Integrated SAFETY INFORMATION Issue 2: 05 th March 2008 Page 3 of 13 IMPORTANT! (U.K. only) This unit is supplied in the U.K. with mains lead fitted with a m oulded 13 amp plug. If, for any reason, it is necessary to remove the plug, please remove the fuse holder and dis pose of the plug safely, out of reach of children. It must not be plugged i[...]

  • Page 4

    A1 Integrated GENERAL ADVICE Issue 2: 05 th March 2008 Page 4 of 13 INSTALLATION PRECAUTION S & USER INFORMATION This new A1 is designed and built to pr ovide trouble-free performance, but as with all electronic devices it is necessary to observe a few precautions: Heed all warnings shown on the back of the product. Only connect the A1 to a mai[...]

  • Page 5

    A1 Integrated ITEM DISPOSAL INFORMATION Issue 2: 05 th March 2008 Page 5 of 13 DISPOSAL The crossed out wheeled bin label that appe ars on the back panel of the product indicates that the pr oduct must not be disposed of as normal household waste. To prevent possible h arm to the environment please separate the product from other waste to ensure th[...]

  • Page 6

    A1 Integrated INSTALLATION Issue 2: 05 th March 2008 Page 6 of 13 INTRODUCTION Congratulations on the purchase of the new A1 Class A Integrated amplifier. Great attention has been paid to internal layout, isolating each circuit section to pr event possible interaction. The unit features a top quality USB input DAC to allow direct connection to a PC[...]

  • Page 7

    A1 Integrated FACILITIES AND CONNECTION Issue 2: 05 th March 2008 Page 7 of 13 FRONT PANEL 1 2 3 4 5 6 1. ON/OFF Button 2. ANALOGUE, USB INPUT source selector buttons 3. DISPLAY 4. TAPE MONITOR button 5. VOLUME up/down 6. IR RECIEVER lens REAR PANEL 7 8 9 10 11 12 13 14 7. USB Input (type ‘B’ socket) 8. PHONO INPUT RCA Sockets 9. PHONO GROUNDI [...]

  • Page 8

    A1 Integrated REMOTE CONTROL Issue 2: 05 th March 2008 Page 8 of 13 Remot e contro l Handset The universal remote control shown below enab les functions from this and related units to be operated from a convenient distanc e. Equivalent b uttons on the remote control have the same functions as t hose on the fr ont panel of t he unit. Othe r function[...]

  • Page 9

    A1 Integrated AMPLIFIER OPERATION Issue 2: 05 th March 2008 Page 9 of 13 A1 V0.0 MUTE CD ™™™™ 33 CD MUTE 33 USB ™™™™ 33 PHONO ™™™™ 33 CD ™™™™ 33 TUNER ™™™™ 33 AUX ™™™™ 33 HT ™™™™ 33 STARTING Once all connections are made, switch on the unit, using the POWER button front of the unit. The backli[...]

  • Page 10

    A1 Integrated AMPLIFIER OPERATION Issue 2: 05 th March 2008 Page 10 of 13 TAPE ™™™™ 33 line level outputs from home theatre processor to the AUX/HT input (see p.7). Volume control is now only possible (for this input) on the external processor. Please note connecting s tandard line signals to these inputs in HT mode will cause very loud and[...]

  • Page 11

    A1 Integrated AMPLIFIER PROBLEMS? Issue 2: 05 th March 2008 Page 11 of 13 Basic problem-solving with an am plifier is similar to troubleshooting ot her electrical or electronic equipment. Always check t he most obvious possi ble causes first, such as the following examples: Problem Probable Cause Remedy No power when POWER button is pressed Mains p[...]

  • Page 12

    A1 Integrated AMPLIFIER SPECIFICATIONS Issue 2: 05 th March 2008 Page 12 of 13 Output: Voltage, RMS 17V Voltage, Peak-to-peak 48V Power 36W Current peak-to-peak 22.8A Damping factor 142 Output devices per channel 2 Pre-out impedance 47 ohms Line input: THD + N, 20Hz to 20 kHz <0.02% Signal / noise ratio -94dB A-wtd. Input sensitivity for full po[...]

  • Page 13

    A1 Integrated MANUAL REVISION Issue 2: 05 th March 2008 Page 13 of 13 RELEASE DATE CHANGES Issue 1 16 th January 2008 1 st issue Issue 2 05 th March 2008 Corrected front panel buttons[...]