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Product features:Based on Matisse Fantasy circuit, the electronic tube pre-stage is simple, the circuit is simple, the overtones are rich, andyou can listen to it. The vocal is sweet and the sound is delicate. The details are presented at a glance. The sound is warmand smooth.The input impedance of the tube is relatively high. After installation, try to pack it to ground as much as possibleto make it as quiet as the deep sea.When the transformer filament voltage is 5-6V, the LM317 regulator IC on the boarddoes not need to be installed, and the point J on the board is treated as a short circuit.When the transformer filament voltage is 8-10V, the LM317 on the board must be installed, so that it can regulate thevoltage to the filament 6V
Product parameters:
Circuit magnification : 8 times
Transformer requirements: 60V
AC input: Filament 6V, high voltage 60-80V
Audio signal output: left / ground / right
Potentiometer compatible: alps16, alps27
Product weight: 82g
Product size: 13.2 * 9.9 * 10cmNote:(1) The ground point of the audio system should not be connected to the same point as the ground wire of the power supply, so as to prevent noise interference from the power supply of the power grid from entering the audio system.(2) It is best to use multiple strands of the ground wire. The area of the welding point must be large enough. Good welding is required to avoid false welding, false welding, and desoldering.(3) Audio equipment should not be grounded at the input and output ends at the same time, forming a ground wire loop, which is prone to inductive self-excitation.(4) Grounding requires a single point of ground at the input end, because the signal level at this point is small and the noise level is also the smallest. At this point, grounding will short the noise to ground and eliminate it. If the output point is grounded, the signal level is large and the noise level is large, so it is not easy to completely eliminate the noise.
Package list:
1*PCB Circuit Finished board
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Category: Sound and Vision:Home Audio and HiFi Separates:Amplifiers and Pre-Amps
Location: Shen zhen