Specifications

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A1 FBP

A1 SERIES PRE-AMPLIFIER WITH BALANCED INPUTS AND OUTPUTS

INSTRUCTIONS FOR USE

Thank you for purchasing the Musical Fidelity A1 FBP (Fully Balanced Preamplifier).

This preamplifier uses our top quality, finely tuned preamplifier circuits to deliver the absolute best in audio

quality with no listener fatigue.

The unit also features two fully balanced signal inputs, which allow direct connection to balances sources

and outputs for the ultimate in dynamic range and low-noise performance. The power supply and associated

mains transformer are supplied in a separate, matching enclosure to isolate the sensitive preamplifier

circuits from mains noise and interference

This results in an astounding improvement in musicality and tonal neutrality and visually pleasing two-box

setup

The A1 FBP is designed to be partnered with all current and future A1 products, as well as our supercharger

range. The A1 FBP is a perfect preamplifier for the 550K or 750K superchargers, and was designed with this

in mind. It can be connected to the line level inputs of the Superchargers as a normal preamplifier. This

combination yields one of the best amplification systems available at any price.

Used properly and carefully, it should give many years of outstanding musical reproduction.

Dust regularly with a soft duster or soft brush, but be careful when using cleaning or polishing agents - they

may harm the surface finish.

If you have any questions about your audio system,

Please consult your dealer who is there to help and advise.

Summary of content (15 pages)

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A1 FBP A1 SERIES PRE-AMPLIFIER WITH BALANCED INPUTS AND OUTPUTS INSTRUCTIONS FOR USE Thank you for purchasing the Musical Fidelity A1 FBP (Fully Balanced Preamplifier). This preamplifier uses our top quality, finely tuned preamplifier circuits to deliver the absolute best in audio quality with no listener fatigue. The unit also features two fully balanced signal inputs, which allow direct connection to balances sources and outputs for the ultimate in dynamic range and low-noise performance.
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A1 FBP CONTENTS PAGE Section 3 Safety information - Mains plug (U.K.
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A1 FBP SAFETY INFORMATION IMPORTANT! (U.K. only) This unit is supplied in the U.K. with mains lead fitted with a moulded 13 amp plug. If, for any reason, it is necessary to remove the plug, please remove the fuse holder and dispose of the plug safely, out of reach of children. It must not be plugged into a mains outlet. The wires in the mains lead supplied with this appliance are coloured in accordance with the following code: Green and yellow..............Earth Blue................................
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A1 FBP GENERAL ADVICE INSTALLATION PRECAUTIONS & USER INFORMATION This new A1 FBP is designed and built to provide 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 FBP to a mains outlet having the same voltage as marked at the back of the unit. Always ensure that when disconnecting and reconnecting your audio equipment the mains supply is switched off.
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A1 FBP DISPOSAL The crossed out wheeled bin label that appears on the back panel of the product indicates that the product must not be disposed of as normal household waste. To prevent possible harm to the environment please separate the product from other waste to ensure that it can be recycled in an environmentally safe manner. Please contact local government office or retailer for available collection facilities.
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A1 FBP INTRODUCTION Congratulations on the purchase of the new A1 FBP (Fully Balanced Preamplifier). The FBP features fully balanced signal paths from input via fully balanced input switches and balanced volume control right the way through to the balanced outputs. This helps to keep noise and interference to an absolute minimum, inherently allowing 6dB more headroom within the circuitry.
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A1 FBP FACILITIES AND CONNECTION FBP FRONT PANEL 1 2 3 4 1. ON/OFF Button 2. ANALOGUE, USB INPUT source selector buttons 3. DISPLAY 5 6 4. TAPE MONITOR button 5. VOLUME up/down 6. IR RECIEVER lens FBP REAR PANEL 7 8 9 10 11 12 7. 8. 9. 10. USB Input (type ‘B’ socket) PHONO INPUT RCA Sockets PHONO GROUNDING 4mm post CD, TUNER, AUX/HT, TAPE INPUT RCA Sockets 11. AUX/HT input configuration switch 12.
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A1 FBP FACILITIES AND CONNECTION FBP POWER SUPPLY UNIT FRONT PANEL 1 2 1. MAINS ON/OFF Button 2. MAINS ON indicator LED FBP POWER SUPPLY UNIT REAR PANEL 3 3. SUPPLY OUT XLR socket Issue 1: 20th May 2008 4 4.
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A1 FBP REMOTE CONTROL Remote control Handset The universal remote control shown below enables functions from this and related units to be operated from a convenient distance. Equivalent buttons on the remote control have the same functions as those on the front panel of the unit. Other functions are only available by remote control.
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A1 FBP OPERATION STARTING Once all connections are made, switch on the unit, using the POWER button front of the power supply unit. The power LED will light on the supply, as well as the backlit display on the main unit. The display will indicate the product name will show but outputs are muted, for about fifteen seconds, so no sound will be heard from the speakers. A1 FBP M MUTE V1.0 33 Once the 15 seconds is up the volume and selected source input will indicate unit is settled, and ready for use.
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A1 FBP OPERATION Selecting the AUX/HT input can also be achieved using the remote handset, using the corresponding button (see p. 9). TAPE To use the TAPE input, connect external source to the TAPE input (see p.7). Select TAPE input using the source up/down buttons until TAPE is shown in the display. TAPE ™™™™ 33 Selecting the TAPE input can also be achieved using the corresponding button on the remote handset, (see p. 9). USB To use the USB input, connect computer USB output to the USB socket (see p.
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A1 FBP OPERATION Computer setup for input USB input A good quality USB A to B cable is required to connect the unit to the computer. Plug the B (square) end into the socket in the back of the A1 FBP. Plug the A (rectangle) end into a free USB socket on the computer. The computer should detect the new hardware and install a generic driver automatically (No setup or driver disk required). CD, MP3, WAV files played on any software should now play through the A1.
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A1 FBP PROBLEMS? Basic problem-solving with an amplifier is similar to troubleshooting other electrical or electronic equipment. Always check the most obvious possible causes first, such as the following examples: Problem No power when POWER button is pressed No sound Sound cut out Probable Cause Remedy Mains power plug is not fully inserted into rear socket or mains socket Plug in securely.
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A1 FBP SPECIFICATIONS Output: Phono RCA 9.5Vrms 26Vpeak to peak 47Ω XLR Balanced 19Vrms 52V peak to peak 47Ω THD + N, 20Hz to 20 kHz Signal / noise ratio Input sensitivity for full output, (volume maximum) Input impedance Overload margin Channel separation Frequency response <0.005% -96dB ‘A’ wtd. 2.2Vrms <0.004% -96dB ‘A’ wtd. 4.4Vrms 75KΩ 12dB >95dB 20Hz-100kHz +0,-1.1dB 150KΩ 12dB >96dB 20Hz-100kHz +0,-1.
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A1 FBP MANUAL REVISION RELEASE Issue 1 Issue 1: 20th May 2008 DATE 20th May 2008 CHANGES 1st issue Page 15 of 15