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4PRO has been designed by us to provide the highest sound quality possible and provide an enjoyable user experience free from the hassles normally associated with manually controllable passive preamplifiers.
• Balance: 0 dB • No additional programming is required for the start-up. SWITCH-ON Switch-on the icOn 4PRO on the back plate’s power switch • • Select a moderate volume level or leave at the initial -47dB • Switch-on your source components and last your power amplifier...
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1 dB steps / channel should this be necessary. . Unlike the resistive passive preamps, icOn 4PRO overcomes any impedance mismatching between source and power amplifier, which is a key factor in preserving the sound quality.
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Do not spin the volume control knob. The 7 segment amber colour LED display provides important information on the status of icOn 4PRO, so it’s easy to see what is happening and view any changes.
USING THE APPLE REMOTE Volume Up Volume Down Input / Balance adjustment Mute / Unmute Status (active input and volume on the display), goes to Sleep when pushed in Muted state Enter and Exit to Balance adjustment, Night mode when pushed in Mute (pushing again in Muted state switches back to normal display mode)
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2 seconds to check the status of icOn anytime without any change. If icOn 4PRO is muted then this button will take icOn into sleep mode. In sleep mode the display is dark with a dim dash at the left.
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Important note: If you bought your icOn 4PRO with the optional AV pass-through function enabled for a particular input, on the output the input signal will appear without attenuation (full volume, 0 dB) and you will see 0 (dB) on the display.
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Apple remotes used together with an Apple TV, etc. If you want to use another Apple remote with icOn 4PRO you have to “pair” them. icOn 4PRO will learn the unique ID code of the new Apple remote and will work only with it afterwards.
REMARKS The input to the icOn 4PRO must be COMPLETELY free of DC offset. The presence of DC voltage degrades the performance of the icOn 4PRO, both with respect to level handling and frequency response. In addition when changing the inputs or volume a small “clicking”...
Please save all packaging. Your icOn 4PRO preamplifier is a precision electronic instrument and should be returned in its case and properly cartoned any time shipment is made. Should you need to ship your icOn 4PRO it should be packed carefully. SCOPE OF DELIVERY 1.
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• RCT Firmware uploader program downloaded and installed on your computer. (instructions in the next section). • The special firmware upgrade cable for icOn 4PRO (optional item, you can order it together with your icOn or later when you need it).
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• Close the RCT Firmware uploader program, disconnect the USB cable from icOn and your PC/laptop. • Start using your icOn 4PRO as usual and enjoy the new features. If you have any problems with the upgrade process or with the new icOn control program please contact our software support specialist Agnes Kocsis at agnes@passivepreamp.com and we will do our best to help.
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Life-Changer Ltd. 18 Old Lane, Manchester M11 1BE, United Kingdom www.passivepreamp.com pal@passivepreamp.com +44 7462 538 212...
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