Photograph 1 below shows a 47 Laboratory Model 4706 Gaincard which retails for about $3300 US. However as time has gone on, to many Gainclone amplifier is now generally understood to mean: any low component amplifier based around high power IC and intended for high performance audio. 50 Watts output power (25 Watts per channel).Voltage regulation with a 170 VA cut-core transformer.PSU filter with 1000♟ to 2200♟ capacitors.9 parts per channel based around the LM3875 IC.The 47 Laboratory Model 4706 Gaincard amplifier has these features: The simple Gaincard amplifier is based around the National Semiconductor (now Texas Instruments) LM3875 integrated circuit (IC). So what the heck is a Gainclone amplifier? Originally, the term Gainclone amplifier was generally understood to be a clone of the 47 Laboratory Gaincard amplifier. ![]() ![]() ![]() 4706 Gaincard Amplifier and Gainclone Amplifiers
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